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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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1 conditions added

Common on this vehicle:Gauge or instrument faultNoiseWarning lightCorrosion or rustLeakReduced brakingAir conditioning or heaterVibration or shudder

Record by record

150 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.

Symptom

Component named as the cause

Work done

How it is said to have ended

  • says it was fixed1
  • says it held for a while1
  • says it came back4
  • says it did not fix it2
  • result not stated13

A ribbon is as wide as the records that state both of its ends (only the commonest are drawn). A record that names several symptoms or components runs through each. Orange is records that say the fault came back or was not fixed. Results come from owners’ reports only; one that does not say is “result not stated”. None of this is a likelihood of a cause or a rate at which work succeeds.

Read the records one by one (22)

Known issuesBrake pipe (brake line) corrosion and rupture3

  1. Owner complaint2002 GMC YUKON ・ 2014-11-17

    Brake failure due to corroded and fractured brake lines at 65,000 miles

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

      What the documents say to do

      Brake pipe (brake line) corrosion and rupture

      Confirm

      • In the joint inspections, scaling or flaking corrosion was taken as indicating the onset of metal loss and given the second lowest ranking (2); a leaking or previously repaired pipe was the lowest (1).

      Repair

      1. GM recommends replacing the entire set of pipes whenever any pipe leaks or is corroded enough to need replacement.
      2. On June 28, 2013 GM released 66 new part numbers for servicing brake pipes in 1999-2007 GMT800 pickups and utility vehicles.

      Caution

      • Analysis of repair records indicates that consumers often elect to repair only the failed circuit.
    Read the sentences of the record
    Fault
    THE CONTACT STATED THAT THE BRAKES FAILED TO ENGAGE WHEN THE BRAKE PEDAL WAS DEPRESSED.
    Cause
    UPDATED 01/15/15*LJ THE BRAKE LINES ROTTED OUT AND CAUSED FLUID TO LEAK, WHICH IN TURN CAUSED THE BRAKES TO FAIL.
    Inspection
    THE DEALER DIAGNOSED THAT THE BRAKE LINES WERE CORRODED AND FRACTURED DUE TO DEFECTIVE METAL.
    Outcome
    THE VEHICLE WAS REPAIRED.

  2. Owner complaint2001 GMC YUKON ・ 2014-03-19

    Brake pedal goes to floor and brake light illuminates when pulling into driveway

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

      What the documents say to do

      Brake pipe (brake line) corrosion and rupture

      Confirm

      • In the joint inspections, scaling or flaking corrosion was taken as indicating the onset of metal loss and given the second lowest ranking (2); a leaking or previously repaired pipe was the lowest (1).

      Repair

      1. GM recommends replacing the entire set of pipes whenever any pipe leaks or is corroded enough to need replacement.
      2. On June 28, 2013 GM released 66 new part numbers for servicing brake pipes in 1999-2007 GMT800 pickups and utility vehicles.

      Caution

      • Analysis of repair records indicates that consumers often elect to repair only the failed circuit.
    Read the sentences of the record
    Fault
    PULLING INTO THE DRIVEWAY UNDER NORMAL, DRY CONDITIONS, THE BRAKE PEDAL WENT DOWN TO THE FLOOR, AND THE BRAKE LIGHT ON THE DASH ILLUMINATED.
    Cause
    THIS WAS A RESULT OF THE DRIVER'S REAR BRAKE LINE SPRINGING A LEAK WITH NO WARNING WHATSOEVER. (1 more)
    Consequence
    WE CAME A FEW FEET FROM CRASHING THROUGH THE GARAGE DOOR.

  3. Owner complaint2004 GMC YUKON ・ 2018-05-29

    Brake pedal depression to floor and brake line failures due to rust at 260K miles

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

      What the documents say to do

      Brake pipe (brake line) corrosion and rupture

      Confirm

      • In the joint inspections, scaling or flaking corrosion was taken as indicating the onset of metal loss and given the second lowest ranking (2); a leaking or previously repaired pipe was the lowest (1).

      Repair

      1. GM recommends replacing the entire set of pipes whenever any pipe leaks or is corroded enough to need replacement.
      2. On June 28, 2013 GM released 66 new part numbers for servicing brake pipes in 1999-2007 GMT800 pickups and utility vehicles.

      Caution

      • Analysis of repair records indicates that consumers often elect to repair only the failed circuit.
    Read the sentences of the record
    Fault
    WHILE TRAVELING AT HIGHWAY SPEED AND ROUNDING A BLIND CURVE THE TRAFFIC AHEAD HAD STOPPED DUE TO A CRASH. (1 more)
    Inspection
    IT WAS RAINING AND AS I LOOKED UNDER MY TRUCK TO LOOK FOR WHY MY BRAKES WERE INEFFECTIVE BUT COULDN'T SEE ANYTHING AT THAT TIME. (1 more)
    Consequence
    I WASN'T STOPPING NEAR FAST ENOUGH AND HAD TO VEER TO THE LEFT INTO THE MEDIAN TO AVOID MAKING CONTACT WITH ANYONE ELSE.

Known issuesCastech cylinder head porosity crack (gradual coolant loss)2

  1. Owner complaint2004 GMC YUKON ・ 2013-09-03

    Slug buildup, oil pressure loss, and coolant loss

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Fault
    MY CAR BEGAN TO HAVE A BUILD UP OF SLUGS AND BEGAN LOOSING OIL PRESSURE AND COOLANT AND NEEDED OIL ADDED AND COOLANT FREQUENTLY.
    Cause
    I WAS ADVISED TO CHANGE THE OIL FREQUENTLY TO CLEAN THE SLUG OUT BUT IT CONTINUED TO BUILD UP AND THE MYSTERY OF LOOSING COOLANT OIL PRESSURE HAS BOTTOMED OUT TWO MORE TIMES AND I FOUND A ARTICLE ON THE INTERNET THAT A NUMBER OF GMC VEHICLES INCLUDING MINE WERE BUILT WITH DEFECTIVE CYLINDER HEADS DUE TO CRACKS OVER TIME WHICH ALLOWS COOLANT TO LEAK INTO ENGINE AND MIX WITH THE OIL WHICH BUILDS UP SLUG.
    Remedy
    THE SLUGS WERE CLEANED AND A NEW OIL PUMP WAS PLACED BECAUSE OF THE BUILD UP OF SLUGS.

  2. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2024-03-19

    Internal Coolant Leak from Cylinder Head Location

    1. 1Fault

      • Some vehicles may experience a gradual coolant loss over time.

    2. 2Finding the cause

      Possible causes

      • A very low percentage of cylinder heads manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.

      Steps to confirm (in the document’s order)

      1. Check whether the head is a Castech casting by looking for the casting logo on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.
      2. If the head is a Castech casting, inspect the area around the five oil drain holes for witness marks indicating coolant seepage over time.
      3. The crack can be in any of the five cylinder head oil drains and shows as a clean or shiny area on an otherwise stained surface.
      4. Pressurizing the cooling system at this time may reveal coolant, air, or a combination weeping in the described area.

    3. 3Correction

      Repair

      • If inspection reveals evidence of coolant witness marks, replace the entire cylinder head assembly.

      Caution

      • If the cylinder heads are not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
      • If no evidence of coolant loss is found on inspection of Castech casting cylinder heads, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2001-2006 GMC Envoy, Jimmy, Sierra and Yukon models, among other listed GM models, with the 4.8L, 5.3L or 5.7L VORTEC GEN III, GEN IV V8 engine.
    • Condition：Some vehicles may experience a gradual coolant loss over time.
    • Cause：A very low percentage of cylinder heads manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.
    • Confirm：Check whether the head is a Castech casting by looking for the casting logo on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.
    • Confirm：If the head is a Castech casting, inspect the area around the five oil drain holes for witness marks indicating coolant seepage over time.
    • Confirm：The crack can be in any of the five cylinder head oil drains and shows as a clean or shiny area on an otherwise stained surface.
    • Confirm：Pressurizing the cooling system at this time may reveal coolant, air, or a combination weeping in the described area.
    • Repair：If inspection reveals evidence of coolant witness marks, replace the entire cylinder head assembly.
    • Caution：If the cylinder heads are not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
    • Caution：If no evidence of coolant loss is found on inspection of Castech casting cylinder heads, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.

Known issuesHydro-boost brake assist and power steering share one hydraulic supply (four campaigns)2

  1. Recall2006 GMC YUKON ・ 2005-05-10

    Power Steering Hose Fracture

    1. 1Fault

      • Under extreme steering maneuvers, such as turning the steering wheel fully left or right while braking, the hose may fracture and leak fluid; power steering assist would be lost and steering effort would increase.
      • On vehicles with hydro-boost power brakes it could also result in loss of power brake assist and increased braking effort; if the fluid sprays onto hot engine parts, an engine compartment fire could occur.
      • With the Hydroboost braking system, braking assist will be limited to the reserve power assist system; the braking systems on vehicles without Hydroboost are unaffected.

    2. 2Finding the cause

      Possible causes

      • The high pressure power-steering hose was manufactured with an incorrect compound, making it susceptible to high pressure failure at the elevated fluid temperatures and pressures that can occur during simultaneous braking and steering inputs.

      Steps to confirm (in the document’s order)

      1. Inspect and record the date code on the power steering pressure line; it is printed on the hose and repeated approximately every 6 inches (150 mm).
      2. Vehicles with the hydro-boost system have two hoses to inspect, others only one; the conduit may have to be removed to read the date code.
      3. The suspect date codes are 07135F-2 and 07145F-2; if the hose carries one of them, it must be replaced.

    3. 3Correction

      Repair

      1. If the date code is not one of the listed codes, replace the conduit if applicable; no further action is required.
      2. For Silverado/Tahoe/Sierra/Yukon/Escalade, hose replacement follows SI documents 756552 (Non Hydro-Boost Pressure line), 651043 (Power Steering Pump to Hydro-Boost Pressure line) and 651019 (Hydro-Boost to Steering Gear Pressure Line).

      Parts

      • Less than 10% of the involved vehicles will require hose replacement; if parts are required, the appropriate hose(s) are ordered from GMSPO.

      Caution

      • This bulletin is a revision to address hoses used to service 1991-2006 vehicles; dealers who ordered these hoses for service are identified in the attachment to the administrative message.
      • Vehicle eligibility should be confirmed through GMVIS before beginning recall repairs; not all vehicles within the breakpoints may be involved.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to certain 2005 Chevrolet Corvette, Silverado and GMC Sierra, and 2006 Buick Rainier, Cadillac Escalade, Chevrolet Corvette, Express, Silverado, Tahoe, TrailBlazer, TrailBlazer EXT, GMC Envoy, Envoy XL, Savana, Sierra, Yukon and HUMMER H2.
    • Applies to：For the 2006 GMC Yukon the VIN breakpoints are 6R104469 through 6R120468.
    • Applies to：Some of the affected hoses were shipped to dealers by GMSPO between July 25, 2005 and August 24, 2005 and could have been used to service 1991-2006 vehicles.
    • Cause：The high pressure power-steering hose was manufactured with an incorrect compound, making it susceptible to high pressure failure at the elevated fluid temperatures and pressures that can occur during simultaneous braking and steering inputs.
    • Condition：Under extreme steering maneuvers, such as turning the steering wheel fully left or right while braking, the hose may fracture and leak fluid; power steering assist would be lost and steering effort would increase.
    • Condition：On vehicles with hydro-boost power brakes it could also result in loss of power brake assist and increased braking effort; if the fluid sprays onto hot engine parts, an engine compartment fire could occur.
    • Condition：With the Hydroboost braking system, braking assist will be limited to the reserve power assist system; the braking systems on vehicles without Hydroboost are unaffected.
    • Confirm：Inspect and record the date code on the power steering pressure line; it is printed on the hose and repeated approximately every 6 inches (150 mm).
    • Confirm：Vehicles with the hydro-boost system have two hoses to inspect, others only one; the conduit may have to be removed to read the date code.
    • Confirm：The suspect date codes are 07135F-2 and 07145F-2; if the hose carries one of them, it must be replaced.
    • Repair：If the date code is not one of the listed codes, replace the conduit if applicable; no further action is required.
    • Repair：For Silverado/Tahoe/Sierra/Yukon/Escalade, hose replacement follows SI documents 756552 (Non Hydro-Boost Pressure line), 651043 (Power Steering Pump to Hydro-Boost Pressure line) and 651019 (Hydro-Boost to Steering Gear Pressure Line).
    • Parts：Less than 10% of the involved vehicles will require hose replacement; if parts are required, the appropriate hose(s) are ordered from GMSPO.
    • Caution：This bulletin is a revision to address hoses used to service 1991-2006 vehicles; dealers who ordered these hoses for service are identified in the attachment to the administrative message.
    • Caution：Vehicle eligibility should be confirmed through GMVIS before beginning recall repairs; not all vehicles within the breakpoints may be involved.
    Cause
    CERTAIN PASSENGER VEHICLES MAY HAVE BEEN BUILT WITH A POWER STEERING HOSE THAT IS NOT TO SPECIFICATION. UNDER EXTREME STEERING MANEUVERS, SUCH AS TURNING THE STEERING WHEEL FULLY TO THE LEFT OR RIGHT WHILE BRAKING, THE HOSE MAY FRACTURE AND LEAK FLUID.
    Remedy
    DEALERS WILL INSPECT THE POWER STEERING HOSE(S) FOR TWO SUSPECT DATE CODES AND REPLACE THEM IF REQUIRED. THE RECALL WILL BEGIN ON OCTOBER 14, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, BUICK AT 1-866-608-8080, CADILLAC AT 1-866-982-2339, ISUZU AT 1-800-255-6727, OR HUMMER AT 1-800-732-5493.
    Consequence
    IF THIS WERE TO OCCUR, POWER STEERING ASSIST WOULD BE LOST AND INCREASED STEERING EFFORT WOULD BE REQUIRED. ON VEHICLES EQUIPPED WITH HYDRO-BOOST POWER BRAKES, IT COULD ALSO RESULT IN LOSS OF POWER BRAKE ASSIST AND INCREASED BRAKING EFFORT WOULD BE REQUIRED. IF THE POWER STEERING FLUID SPRAY WERE TO SPRAY ONTO HOT ENGINE PARTS, AN ENGINE COMPARTMENT FIRE COULD OCCUR.

  2. Recall2006 GMC YUKON ・ 2005-10-07

    Power steering hose fracture risk recall

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

      What the documents say to do

      Hydro-boost brake assist and power steering share one hydraulic supply (four campaigns)

      Confirm

      • Perform the "Power Steering System Test" found in SI and make any necessary repairs based on system diagnosis.

      Repair

      1. Dealers replace the hydro-boost relief valve.
      2. Dealers test the hydro-boost assembly for functional operation and replace it if it fails.

      Caution

      • An inoperative pump raises steering and braking effort but does not completely remove the ability to steer or slow the vehicle.
    Read the sentences of the record
    Cause
    Certain vehicles may have been built with a power steering hose that is not to specification. Under extreme steering manoeuvres, such as turning the steering wheel fully to the left or right while braking, the hose may fracture and leak fluid. If this were to occur, power steering assist would be lost and increased steering effort would be required. On vehicles equipped with hydro-boost power brakes, it could also result in loss of power brake assist and increase braking effort would be required. If power steering fluid were to spray onto hot engine parts, an engine compartment fire could occur. Correction: Dealers will inspect the power steering hose(s) for two suspect date codes and replace them if required.

Known issuesAftermarket part (not the vehicle as built): Fram G3727 replacement fuel filter connector - recall 06E-0431

  1. Recall2000–2005 GMC YUKON ・ —

    Fram Replacement Fuel Filters (P/N G3727) Recall

    1. 1Fault

      • The connector on the fuel filter was not manufactured to specification, so the O-ring may not seat correctly on the fuel line; this may cause an inadequate seal, potentially leading to a fuel leak (wetting or dripping) and possible vehicle fire.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • The part number (G3727), country of origin (Mexico) and the date code (e.g., X60031) are located on the side of the fuel filter.

    3. 3Correction

      Repair

      • Honeywell will replace the subject fuel filters at no charge to the customer.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：This is an equipment recall of fuel filters manufactured by Interfil in Mexico and sold by Honeywell under the FRAM brand name, part number G3727, intended for aftermarket installation on the vehicle applications in the attached table.
    • Applies to：Only filters with date codes X52911 through X60801 sequentially or X600141, and with a Mexico country of origin marking on the filter housing, are subject to the recall.
    • Applies to：The application table lists YUKON 1992 - 2005, YUKON DENALI 2005, YUKON DENALI XL 2005, YUKON XL 1500 2000 - 2005 and YUKON XL 2500 2000 - 2005.
    • Condition：The connector on the fuel filter was not manufactured to specification, so the O-ring may not seat correctly on the fuel line; this may cause an inadequate seal, potentially leading to a fuel leak (wetting or dripping) and possible vehicle fire.
    • Confirm：The part number (G3727), country of origin (Mexico) and the date code (e.g., X60031) are located on the side of the fuel filter.
    • Repair：Honeywell will replace the subject fuel filters at no charge to the customer.
    Cause
    CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.
    Remedy
    HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION 1).
    Consequence
    THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR.

Known issuesEngine fuel rail crossover tube retainer screws may break (5.3L RPO L59) - recall 04V-3761

  1. Recall2005 GMC YUKON ・ 2004-08-05

    Fuel Rail Crossover Tube Retainer Screws Recall

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

      What the documents say to do

      Engine fuel rail crossover tube retainer screws may break (5.3L RPO L59) - recall 04V-376

      Confirm

      • Check for leaks: ignition ON with the engine OFF for 2 seconds, ignition OFF for 10 seconds, ignition ON with the engine OFF, then visually inspect for fuel leaks.

      Repair

      1. Dealers inspect the fuel rail crossover tube and replace the retainer screws if necessary.
      2. Hold the fuel crossover tube retainer to the bracket on the fuel rail with locking pliers, using enough force to keep the retainer from moving without damaging any parts.

      Caution

      • The GM bulletin lists Tahoe and Yukon models because Canadian vehicles are included in the bulletin.
    Read the sentences of the record
    Cause
    On certain vehicles, the fuel rail crossover tube retainer screws were not manufactured to specifications and may break. If a tube retainer screw breaks, fuel could leak from the fuel rail crossover joint, the engine may stall and, if an ignition source were present, an engine compartment fire could occur. Correction: Dealers will inspect the fuel rail crossover tube assembly and, if necessary, replace the two tube retainer screws.

Known issuesSingle-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring1

  1. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2018-11-13

    Service Engine Soon Lamp, Misfire, Engine Noise Diagnostic Information

    1. 1Fault

      • Customers may complain of an SES light, engine misfire, and/or engine noise.
      • If the SES light is on, there will be a P0300-P0308 DTC with misfires counting on a single cylinder, which may or may not be felt.
      • A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).

    2. 2Finding the cause

      Possible causes

      • If SI diagnosis does not isolate the cause, it may be a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, or a collapsed AFM (Active Fuel Management) lifter.

      Steps to confirm (in the document’s order)

      1. During the noise, press with a wooden hammer handle on the rocker arms at the valve side, push rod side, and side of the rocker to find which one is making noise.
      2. If pressure on the valve side of the rocker changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
      3. Measure the cam lobe lift at the push rod side of the rocker arm.
      4. A good indicator of a sticking valve is engine misfires that continue to count on an aggressive deceleration with engine braking.
      5. Release the air pressure from the cylinder and work the valve up and down in the guide while turning it 360 degrees; if any binding is felt, a stem to guide clearance concern exists.
      1 more points

    3. 3Correction

      Repair

      1. If a worn camshaft lobe or lifter roller is found, follow SI procedures to replace the camshaft and all lifters.
      2. Also replace the plastic lifter guide for the lifter that had the damaged cam lobe and/or lifter roller.
      3. Refer to the latest version of PIP4753 for decarboning instructions.
      4. If a broken valve spring is found, replace the broken valve spring as necessary.

      Caution

      • If an AFM lifter concern is suspected, refer to the latest version of PIP4568 for additional information.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GMC Yukon models, 2002 - 2018, with a V8 engine.
    • Condition：Customers may complain of an SES light, engine misfire, and/or engine noise.
    • Condition：If the SES light is on, there will be a P0300-P0308 DTC with misfires counting on a single cylinder, which may or may not be felt.
    • Condition：A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).
    • Cause：If SI diagnosis does not isolate the cause, it may be a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, or a collapsed AFM (Active Fuel Management) lifter.
    • Confirm：During the noise, press with a wooden hammer handle on the rocker arms at the valve side, push rod side, and side of the rocker to find which one is making noise.
    • Confirm：If pressure on the valve side of the rocker changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
    • Confirm：Measure the cam lobe lift at the push rod side of the rocker arm.
    • Repair：If a worn camshaft lobe or lifter roller is found, follow SI procedures to replace the camshaft and all lifters.
    • Repair：Also replace the plastic lifter guide for the lifter that had the damaged cam lobe and/or lifter roller.
    • Confirm：A good indicator of a sticking valve is engine misfires that continue to count on an aggressive deceleration with engine braking.
    • Confirm：Release the air pressure from the cylinder and work the valve up and down in the guide while turning it 360 degrees; if any binding is felt, a stem to guide clearance concern exists.
    • Repair：Refer to the latest version of PIP4753 for decarboning instructions.
    • Confirm：Typically, the Cylinder Leakage Test outlined in SI should isolate valve leakage.
    • Repair：If a broken valve spring is found, replace the broken valve spring as necessary.
    • Caution：If an AFM lifter concern is suspected, refer to the latest version of PIP4568 for additional information.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

ENGINE AND ENGINE COOLING4

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2023-04-12(4 earlier editions of this document folded here)

    ACDelco Spin-On Oil Filter Torque Specification Notification

    1. 1Fault

      • An oil leak from underneath the front of the vehicle after an earlier oil service; the leak can take several thousand miles to appear.

    2. 2Finding the cause

      Possible causes

      • The oil may be leaking from between the oil filter gasket and the mounting surface.

      Steps to confirm (in the document’s order)

      • The filter may be very easy to remove, sometimes by hand.

    3. 3Correction

      Repair

      1. Lubricate the new oil filter gasket with clean engine oil.
      2. Install the oil filter 1 full turn after the gasket contacts the sealing surface on the filter mounting flange.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all passenger cars and trucks, model years 2000 to 2024.
    • Condition：An oil leak from underneath the front of the vehicle after an earlier oil service; the leak can take several thousand miles to appear.
    • Cause：The oil may be leaking from between the oil filter gasket and the mounting surface.
    • Confirm：The filter may be very easy to remove, sometimes by hand.
    • Repair：Lubricate the new oil filter gasket with clean engine oil.
    • Repair：Install the oil filter 1 full turn after the gasket contacts the sealing surface on the filter mounting flange.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.

  2. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2023-01-06(2 earlier editions of this document folded here)

    EVAP Leak Diagnostic Service Bulletin (DTCs P0442/P0455)

    1. 1Fault

      • The MIL is illuminated, and DTC P0442 (EVAP small leak detected) and/or P0455 (EVAP large leak detected) may be set in the ECM.

    2. 2Finding the cause

      Possible causes

      • P0455 sets because of a large leak or a purge blockage: an unseated tube connection, a damaged tube, a canister vent valve stuck open, or a purge valve stuck closed.
      • P0442 sets because of a small leak, which can come from a purge valve stuck open or a canister vent valve stuck open.

      Steps to confirm (in the document’s order)

      1. Inspect every purge connection for proper installation, and look along the lines for damage or wear; if damage is seen, confirm it with the smoke test.
      2. Some leaks show only under pressure and some only under vacuum, so check both ways; cycling the purge and vent solenoids with GDS2 while inspecting may show a sticking valve.
      3. Critical connections to check include: purge tube to purge valve (at the intake manifold), purge tube to chassis EVAP line (rear of the engine, near the transmission), chassis EVAP line to canister, and fuel tank load line to canister.
      4. Also check the vent valve line at the vent valve, the fuel tank load line jumper connection near the fuel tank, and that the fuel tank cap is closed properly.
      5. If all connections are good, check the vent valve for a stuck-open position; if the vent valve works correctly, go on to the purge valve.
      1 more points

    3. 3Correction

      Parts

      • No parts are required for this repair.

      Caution

      • For diagnostic instructions, DTC information and required tools, always follow the service information document for the vehicle and DTC being worked on.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：This bulletin only applies to vehicles with gasoline engines.
    • Condition：The MIL is illuminated, and DTC P0442 (EVAP small leak detected) and/or P0455 (EVAP large leak detected) may be set in the ECM.
    • Cause：P0455 sets because of a large leak or a purge blockage: an unseated tube connection, a damaged tube, a canister vent valve stuck open, or a purge valve stuck closed.
    • Cause：P0442 sets because of a small leak, which can come from a purge valve stuck open or a canister vent valve stuck open.
    • Confirm：Inspect every purge connection for proper installation, and look along the lines for damage or wear; if damage is seen, confirm it with the smoke test.
    • Confirm：Some leaks show only under pressure and some only under vacuum, so check both ways; cycling the purge and vent solenoids with GDS2 while inspecting may show a sticking valve.
    • Confirm：Critical connections to check include: purge tube to purge valve (at the intake manifold), purge tube to chassis EVAP line (rear of the engine, near the transmission), chassis EVAP line to canister, and fuel tank load line to canister.
    • Confirm：Also check the vent valve line at the vent valve, the fuel tank load line jumper connection near the fuel tank, and that the fuel tank cap is closed properly.
    • Confirm：If all connections are good, check the vent valve for a stuck-open position; if the vent valve works correctly, go on to the purge valve.
    • Confirm：Work in this order: EVAP lines properly installed and fully seated; damage on the EVAP lines; vent valve malfunction; purge valve malfunction.
    • Parts：No parts are required for this repair.
    • Caution：For diagnostic instructions, DTC information and required tools, always follow the service information document for the vehicle and DTC being worked on.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2022-09-07

    MIL Illuminated with Fuel Trim and Oxygen Sensor Codes

    1. 1Fault

      • Customers may comment that the MIL is illuminated.
      • Initial diagnosis may show fuel trim and O2 sensor related codes including P0101, P0137, P0138, P0140, P0141, P0157, P0158, P0160 and P0161.
      • The listed codes also include P0171, P0174, P0420, P0430, P1174 and P1175.

    2. 2Finding the cause

      Possible causes

      • These methods find small leaks around the O2 sensor embossments and slight cracks in an intake plenum or gasket.

      Steps to confirm (in the document’s order)

      1. If normal SI diagnostics do not lead to a resolution and an intake vacuum leak or exhaust leak is suspected, use the GE-52250 Variable Pressure Leak Detector (preferred), the J-41416 ultrasonic leak tester, or possibly soapy water with low pressure air into the tailpipe to find the leak.
      2. For an intake leak, introduce the smoke into the brake booster hose or the oil dipstick tube; soapy water can be sprayed near the gasket, seams and all vacuum nipples.
      3. For an exhaust leak, put the hose with smoke or air into the tailpipe sealed with shop towels, then spray soapy water around seals, seams and bosses.

    3. 3Correction

      Parts

      • No parts are required for this repair.

      Caution

      • All of these tests are much more effective if the throttle body is covered or sealed.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to Buick, Cadillac, Chevrolet and GMC passenger cars and trucks, model years 2000 to 2022, gasoline engines only.
    • Condition：Customers may comment that the MIL is illuminated.
    • Condition：Initial diagnosis may show fuel trim and O2 sensor related codes including P0101, P0137, P0138, P0140, P0141, P0157, P0158, P0160 and P0161.
    • Condition：The listed codes also include P0171, P0174, P0420, P0430, P1174 and P1175.
    • Confirm：If normal SI diagnostics do not lead to a resolution and an intake vacuum leak or exhaust leak is suspected, use the GE-52250 Variable Pressure Leak Detector (preferred), the J-41416 ultrasonic leak tester, or possibly soapy water with low pressure air into the tailpipe to find the leak.
    • Caution：All of these tests are much more effective if the throttle body is covered or sealed.
    • Confirm：For an intake leak, introduce the smoke into the brake booster hose or the oil dipstick tube; soapy water can be sprayed near the gasket, seams and all vacuum nipples.
    • Confirm：For an exhaust leak, put the hose with smoke or air into the tailpipe sealed with shop towels, then spray soapy water around seals, seams and bosses.
    • Cause：These methods find small leaks around the O2 sensor embossments and slight cracks in an intake plenum or gasket.
    • Parts：No parts are required for this repair.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This bulletin provides information on tools available to find an intake vacuum leak or exhaust leak to correct a condition of MIL Illuminated with Multiple Fuel Trim and/or Oxygen Sensor Codes Set.

  4. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2019-03-18

    Diagnostic Tip: Using Smoke Machine and Ultrasonic Detector for Air Leaks

    1. 1Fault

      • The SES light is on, and initial diagnosis may show fuel trim and/or O2 sensor related codes such as P0171, P0174, P0420 and P0430.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. If normal SI diagnostics do not resolve it and an intake vacuum leak or exhaust leak is suspected, the J41413-200 Evaporative System Tester smoke machine, the J-41416 ultrasonic leak tester, or soapy water with low pressure air into the tailpipe may help find the leak.
      2. For an intake leak, the smoke can be introduced into the brake booster hose or the oil dipstick tube.
      3. Soapy water can be sprayed near the gasket and seams and on all vacuum nipples.
      4. For an exhaust leak, a hose into the tailpipe carrying smoke or air, sealed with shop towels, is effective.
      5. Then spray soapy water around the seals, seams and bosses.
      1 more points

    3. 3Correction

      Caution

      • All of these tests are much more effective if the throttle body is covered/sealed.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all 2000 - 2019 models with gasoline engines.
    • Condition：The SES light is on, and initial diagnosis may show fuel trim and/or O2 sensor related codes such as P0171, P0174, P0420 and P0430.
    • Confirm：If normal SI diagnostics do not resolve it and an intake vacuum leak or exhaust leak is suspected, the J41413-200 Evaporative System Tester smoke machine, the J-41416 ultrasonic leak tester, or soapy water with low pressure air into the tailpipe may help find the leak.
    • Caution：All of these tests are much more effective if the throttle body is covered/sealed.
    • Confirm：For an intake leak, the smoke can be introduced into the brake booster hose or the oil dipstick tube.
    • Confirm：Soapy water can be sprayed near the gasket and seams and on all vacuum nipples.
    • Confirm：For an exhaust leak, a hose into the tailpipe carrying smoke or air, sealed with shop towels, is effective.
    • Confirm：Then spray soapy water around the seals, seams and bosses.
    • Confirm：These methods are very good for finding small leaks around the O2 sensor bosses and slight cracks in an intake plenum or gasket.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This preliminary information document communicates a tip on the way to diagnose possible induction or exhaust air leaks using the evaporative emission cart smoke machine and ultrasonic leak detector tools.

BRAKES1

  1. Recall2000 GMC YUKON ・ 2000-11-17

    Brake pipe wear contact recall

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

    Read the sentences of the record
    Cause
    On certain vehicles, the body cross sill may contact the front, right-hand brake pipe. This could eventually wear a hole in the brake pipe over the normal life of the vehicle and result in a brake fluid leak. This could ultimately result in a partial brake system failure and increased stopping distances. Correction: Dealers will inspect for brake pipe wear and replace worn section if necessary. A spacer clip will be installed to ensure adequate clearance.

EQUIPMENT1

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-06-11(2 earlier editions of this document folded here)

    GM Products for Eliminating Vehicle Odors

    1. 1Fault

      • GM Vehicle Care Odor Eliminator has been shown to greatly reduce or remove mold and mildew smells resulting from vehicle water leaks, as well as customer created odors such as smoke.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • First confirm that all water leaks have been repaired and determine which areas were water soaked or wet; components with visible mold/mildew staining should be replaced.

    3. 3Correction

      Repair

      1. If the interior is removed, treat the floor pan and primed/painted surfaces with a bleach/soap solution, rinse with clean water and dry.
      2. For hard surfaces, add 8 oz. of GM Vehicle Care Odor Eliminator (1 cup) to dish soap in a spray bottle and top off the bottle with tap water.
      3. Treat all carpeting and upholstered seats lightly to moderately with the formula at full strength, using a wide fan spray setting.
      4. For the ventilation system, start the vehicle, turn the fan on high cool (not the A/C setting), and spray the formula (10 trigger pulls) into the outside fresh air intake vent at the cowl.

      Parts

      • Part number 88861431 (in Canada, 88861436): GM Vehicle Care Odor Eliminator, 32 oz (946 mL) non-aerosol bottle.

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      Caution

      • Do not let the product come into contact with vinegar or any acidic substance.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2015 and prior GM passenger cars and trucks.
    • Condition：GM Vehicle Care Odor Eliminator has been shown to greatly reduce or remove mold and mildew smells resulting from vehicle water leaks, as well as customer created odors such as smoke.
    • Caution：Do not let the product come into contact with vinegar or any acidic substance.
    • Confirm：First confirm that all water leaks have been repaired and determine which areas were water soaked or wet; components with visible mold/mildew staining should be replaced.
    • Repair：If the interior is removed, treat the floor pan and primed/painted surfaces with a bleach/soap solution, rinse with clean water and dry.
    • Repair：For hard surfaces, add 8 oz. of GM Vehicle Care Odor Eliminator (1 cup) to dish soap in a spray bottle and top off the bottle with tap water.
    • Repair：Treat all carpeting and upholstered seats lightly to moderately with the formula at full strength, using a wide fan spray setting.
    • Repair：For the ventilation system, start the vehicle, turn the fan on high cool (not the A/C setting), and spray the formula (10 trigger pulls) into the outside fresh air intake vent at the cowl.
    • Parts：Part number 88861431 (in Canada, 88861436): GM Vehicle Care Odor Eliminator, 32 oz (946 mL) non-aerosol bottle.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This informational bulletin provides information on what products GM has to aid in the eliminating unwanted odors in a vehicle.

EXTERIOR LIGHTING1

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2023-02-28(1 earlier editions of this document folded here)

    Exterior Lamp Condensation and Water Leaks Service Bulletin

    1. 1Fault

      • Exterior lamps such as cornering, turn signal, backup, head or tail lamps may show very small water droplets, a fine mist or white fog (condensation) on the inside of the lens.

    2. 2Finding the cause

      Possible causes

      • Condensation occurs when the air inside the lamp assembly reaches the dew point through atmospheric changes.
      • Non-OE lamps are most often presented as holding moisture or with inoperative bulbs from corroded electrical connections; they appear to be installed as part of a collision repair.

      Steps to confirm (in the document’s order)

      1. Normal: the mist is located mainly in the lens corners near the vents and does not cover more than half the lens surface.
      2. Normal: the moisture clears when the vehicle is parked in a dry environment or driven with the lights on.
      3. Leak: water has accumulated in the bottom of the lamp assembly.
      4. Leak: the condition will not clear when the vehicle is parked in a dry environment or driven with the lights on.

    3. 3Correction

      Repair

      • A condition covering more than half the surface of the lamp lens indicates the need to service the lens or lamp assembly.

      Caution

      • Depending on the lamp and the atmospheric conditions, the time needed to clear the lamp may vary from 2 to 6 hours.
      • If the normal conditions are noted, advise the customer that replacing the lamp assembly may not correct the condition.
      • Moisture that "comes and goes" is considered a normal condition.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2023 and prior GM passenger cars and trucks, including medium duty trucks and excluding LCF medium duty trucks.
    • Condition：Exterior lamps such as cornering, turn signal, backup, head or tail lamps may show very small water droplets, a fine mist or white fog (condensation) on the inside of the lens.
    • Cause：Condensation occurs when the air inside the lamp assembly reaches the dew point through atmospheric changes.
    • Caution：Depending on the lamp and the atmospheric conditions, the time needed to clear the lamp may vary from 2 to 6 hours.
    • Confirm：Normal: the mist is located mainly in the lens corners near the vents and does not cover more than half the lens surface.
    • Confirm：Normal: the moisture clears when the vehicle is parked in a dry environment or driven with the lights on.
    • Caution：If the normal conditions are noted, advise the customer that replacing the lamp assembly may not correct the condition.
    • Repair：A condition covering more than half the surface of the lamp lens indicates the need to service the lens or lamp assembly.
    • Confirm：Leak: water has accumulated in the bottom of the lamp assembly.
    • Confirm：Leak: the condition will not clear when the vehicle is parked in a dry environment or driven with the lights on.
    • Caution：Moisture that "comes and goes" is considered a normal condition.
    • Cause：Non-OE lamps are most often presented as holding moisture or with inoperative bulbs from corroded electrical connections; they appear to be installed as part of a collision repair.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.

FUEL SYSTEM, GASOLINE1

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2021-04-19(1 earlier editions of this document folded here)

    Engine Block Cylinder Bore Damage Information

    1. 1Fault

      • The block is suspected of cylinder bore damage, scoring or out of round as the cause of oil consumption, misfire, cylinder leakage or blow by.

    2. 2Finding the cause

      Possible causes

      • If a catalytic converter fails and the brick breaks, its dust can be drawn back into the engine.

      Steps to confirm (in the document’s order)

      1. The peak to valley spec for crosshatch is .65-2.8 microns; any deviation and the crosshatch will be gone.
      2. Cylinder damage or scoring: the walls have grooves deep enough to catch with a finger nail.
      3. If there is crosshatch all the way around the bore from top to bottom, the bore is not out of round.
      4. Dirt intrusion: with a compromised filtering system the bores look lightly sand blasted, and the crosshatch is faint with no sharpness.
      5. A block with this converter-dust failure has bores that look sand blasted.

    3. 3Correction

      Repair

      • If not caught early there will be no crosshatch and the engine will need to be replaced.

      Caution

      • GM has not had an issue with cylinders being machined out of round for any engine family in recent history.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all brands and models, model years 2000 - 2021.
    • Condition：The block is suspected of cylinder bore damage, scoring or out of round as the cause of oil consumption, misfire, cylinder leakage or blow by.
    • Caution：GM has not had an issue with cylinders being machined out of round for any engine family in recent history.
    • Confirm：The peak to valley spec for crosshatch is .65-2.8 microns; any deviation and the crosshatch will be gone.
    • Confirm：Cylinder damage or scoring: the walls have grooves deep enough to catch with a finger nail.
    • Confirm：If there is crosshatch all the way around the bore from top to bottom, the bore is not out of round.
    • Confirm：Dirt intrusion: with a compromised filtering system the bores look lightly sand blasted, and the crosshatch is faint with no sharpness.
    • Cause：If a catalytic converter fails and the brick breaks, its dust can be drawn back into the engine.
    • Confirm：A block with this converter-dust failure has bores that look sand blasted.
    • Repair：If not caught early there will be no crosshatch and the engine will need to be replaced.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.

STEERING1

  1. Manufacturer communication2006 GMC YUKON DENALI ・ 2020-08-10

    Power Steering Noise at Low Temperatures - Technical Bulletin

    1. 1Fault

      • Noise or a fluid leak from the power steering pump, gear or high pressure side hose during extreme low outdoor temperature operation.

    2. 2Finding the cause

      Possible causes

      • At -30°C (-22°F) or lower the power steering fluid may thicken and system pressures may rise, potentially causing noise or damage to components.

    3. 3Correction

      Repair

      • Replace any damaged power steering components, flush the system and refill with Cold Climate power steering fluid.

      Parts

      • P/N 12345866 (in Canada 10953484): 16 oz. bottle Power Steering Fluid - Cold Climate.
      • P/N 12345867 (in Canada 10953471): 32 oz. bottle Power Steering Fluid - Cold Climate.

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      Caution

      • In some extreme operating conditions this fluid may not correct the condition.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2014 and prior GM passenger cars and light duty trucks.
    • Condition：Noise or a fluid leak from the power steering pump, gear or high pressure side hose during extreme low outdoor temperature operation.
    • Cause：At -30°C (-22°F) or lower the power steering fluid may thicken and system pressures may rise, potentially causing noise or damage to components.
    • Repair：Replace any damaged power steering components, flush the system and refill with Cold Climate power steering fluid.
    • Caution：In some extreme operating conditions this fluid may not correct the condition.
    • Parts：P/N 12345866 (in Canada 10953484): 16 oz. bottle Power Steering Fluid - Cold Climate.
    • Parts：P/N 12345867 (in Canada 10953471): 32 oz. bottle Power Steering Fluid - Cold Climate.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This technical bulletin provides a procedure to eliminate a power steering noise due to extremely low temperatures.

SUSPENSION1

  1. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2021-04-16

    Fluid Leakage vs. Seepage Identification Guide

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Information Regarding the Differences Between Fluid Leakage and Seepage This bulletin is intended to help identify the differences between what is considered a fluid leak and what is considered seepage. Improper diagnosis may lead to unnecessary component replacement. Use the following information to determine if the condition is normal acceptable seepage or a defective component

    Read the sentences of the record
    Remedy
    Information Regarding the Differences Between Fluid Leakage and Seepage This bulletin is intended to help identify the differences between what is considered a fluid leak and what is considered seepage. Improper diagnosis may lead to unnecessary component replacement. Use the following information to determine if the condition is normal acceptable seepage or a defective component

TIRES1

  1. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2018-05-29

    Slow Tire Leak and Low Tire PSI Message Correction

    1. 1Fault

      • A tire slowly loses air pressure over a period of days or weeks.

    2. 2Finding the cause

      Possible causes

      • Abrasive elements from the environment get between the tire and the wheel at the bead seat, and the relative motion between tire and wheel lets them wear both materials.

      Steps to confirm (in the document’s order)

      1. The corrosion may be on the inboard or outboard bead seat and is not visible until the tire is dismounted from the wheel.
      2. After a water dunk tank leak test, if the leak is around the bead seat of the wheel, dismount the tire and examine the bead seat.
      3. Bead seat corrosion looks like blistering of the wheel finish, leaving a rough or uneven surface on which the tire cannot keep a proper seal.
      4. At 32,186 km (20,000 mi) or less, the total combined linear length of repairable corrosion is 100 mm (4 in) or less; beyond that, replace the wheel.
      5. Above 32,186 km (20,000 mi), the total combined linear length of repairable corrosion is 200 mm (8 in) or less; beyond that, replace the wheel.

    3. 3Correction

      Repair

      1. Remove the corrosion and any flaking paint with a clean-up (fine cut) sanding disc or biscuit, back to material that is stable and firmly bonded to the wheel.
      2. Coat the repaired area with a commercially available tire sealant such as Patch Brand Bead Sealant or equivalent.

      Caution

      • Remove only the material needed to eliminate the corrosion from the bead seat; keep the sealing surface as smooth and level as possible.
      • If loose coatings or corrosion extend to the visible surfaces on the face of the wheel, the wheel must be replaced.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：2005-2015 GM passenger cars and light duty trucks.
    • Condition：A tire slowly loses air pressure over a period of days or weeks.
    • Cause：Abrasive elements from the environment get between the tire and the wheel at the bead seat, and the relative motion between tire and wheel lets them wear both materials.
    • Confirm：The corrosion may be on the inboard or outboard bead seat and is not visible until the tire is dismounted from the wheel.
    • Confirm：After a water dunk tank leak test, if the leak is around the bead seat of the wheel, dismount the tire and examine the bead seat.
    • Confirm：Bead seat corrosion looks like blistering of the wheel finish, leaving a rough or uneven surface on which the tire cannot keep a proper seal.
    • Confirm：At 32,186 km (20,000 mi) or less, the total combined linear length of repairable corrosion is 100 mm (4 in) or less; beyond that, replace the wheel.
    • Confirm：Above 32,186 km (20,000 mi), the total combined linear length of repairable corrosion is 200 mm (8 in) or less; beyond that, replace the wheel.
    • Repair：Remove the corrosion and any flaking paint with a clean-up (fine cut) sanding disc or biscuit, back to material that is stable and firmly bonded to the wheel.
    • Caution：Remove only the material needed to eliminate the corrosion from the bead seat; keep the sealing surface as smooth and level as possible.
    • Repair：Coat the repaired area with a commercially available tire sealant such as Patch Brand Bead Sealant or equivalent.
    • Caution：If loose coatings or corrosion extend to the visible surfaces on the face of the wheel, the wheel must be replaced.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This technical bulletin provides a procedure on cleaning a leaking rim, to correct a customers concern of having a slow tire leak and low tire psi message on.

VISIBILITY1

  1. Manufacturer communication2005–2006 GMC YUKON ・ 2022-07-25(4 earlier editions of this document folded here)

    Sunroof Operation Concerns – Diagnostic Information

    1. 1Fault

      • Customers may comment on intermittent sunroof operation, bind, noise, auto-reverse and/or water leaks.

    2. 2Finding the cause

      Possible causes

      • Dirt and debris may collect on the sunroof seal or in the tracks and affect operation, cause noise or plug the water drainage system.

    3. 3Correction

      Repair

      1. Open the sunroof, remove any obstacles or loose debris, and verify that the module drain holes are not plugged.
      2. Wipe the sunroof seal and roof sealing area with a clean cloth, mild soap and water; do not remove grease from the sunroof.

      Caution

      • Some replaced sunroof module assemblies were tested and found that simple cleaning of these areas would have repaired the condition without replacing the assembly.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model table lists all brands and models for model years 2005 - 2023.
    • Condition：Customers may comment on intermittent sunroof operation, bind, noise, auto-reverse and/or water leaks.
    • Cause：Dirt and debris may collect on the sunroof seal or in the tracks and affect operation, cause noise or plug the water drainage system.
    • Repair：Open the sunroof, remove any obstacles or loose debris, and verify that the module drain holes are not plugged.
    • Repair：Wipe the sunroof seal and roof sealing area with a clean cloth, mild soap and water; do not remove grease from the sunroof.
    • Caution：Some replaced sunroof module assemblies were tested and found that simple cleaning of these areas would have repaired the condition without replacing the assembly.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.

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