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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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The vehicle (where a record says)

A record is under an engine, a drive or a series only where it says so: the characters of the vehicle identification number filed with a complaint, its text, or what its document says it applies to. A record that does not say is kept as "not stated". The filed numbers and the documents do not tell 4WD from AWD.

Common on this vehicle:Lights (headlights, turn signals)Gauge or instrument faultLeakSmoke or fireWarning lightAir conditioning or heaterMisfire or rough idleNoise

Record by record

47 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 did not fix it2

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 (19)

Known issuesDRLs or auto headlamps will not disable with the headlamp switch (Canada, RPO Z49; normal)1

  1. Manufacturer communication2003–2006 GMC YUKON ・ 2019-06-10(1 earlier editions of this document folded here)

    Daytime Running Lamps Will Not Shut Off in Canada-Built Vehicles

    1. 1Fault

      • Some customers may state that the Daytime Running Lamps (DRLs) or the auto headlamps will not shut off when using the daytime running lamp disable switch, which is part of the headlamp switch.

    2. 2Finding the cause

      Possible causes

      • Vehicles built for Canada (RPO Z49) have different software that does not allow the DRLs or auto headlamps to be shut off.
      • Canadian law prohibits disabling daytime running lamps (DRLs) or auto headlamps.

    3. 3Correction

      Caution

      • This is a normal operation of the vehicle and no repairs should be attempted.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model table lists the GMC Yukon, model years 2003 - 2019.
    • Condition：Some customers may state that the Daytime Running Lamps (DRLs) or the auto headlamps will not shut off when using the daytime running lamp disable switch, which is part of the headlamp switch.
    • Cause：Vehicles built for Canada (RPO Z49) have different software that does not allow the DRLs or auto headlamps to be shut off.
    • Cause：Canadian law prohibits disabling daytime running lamps (DRLs) or auto headlamps.
    • Caution：This is a normal operation of the vehicle and no repairs should be attempted.

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

    Remedy
    This Preliminary Information communicates to technicians that the Daytime Running Lamps (DRL's) or the auto headlamps will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49).   These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling daytime running lamps (DRL's) or auto headlamps.

Known issuesInstrument panel cluster gauges stick, flutter or stop working1

  1. Manufacturer communication2003–2004 GMC YUKON ・ 2008-01-10

    Cadillac, Chevrolet, GMC instrument cluster gauge needle function

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      CADILLAC CHEVROLET GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INSTRUMENT PANEL CLUSTER GAUGE NEEDLE FUNCTION MAY CAUSE INACCURATE READINGS ON SOME 2003-2004 CADILLAC, CHEVROLET, AND GMC VEHICLES. *NJ UPDATED 2/5/08. *NJ UPDATED 9/5/08. *PE UPDATED 11/4/08. *PE

      What the documents say to do

      Instrument panel cluster gauges stick, flutter or stop working

      Repair

      • Dealers replace the instrument panel cluster after verifying the condition.
    Read the sentences of the record
    Remedy
    CADILLAC CHEVROLET GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INSTRUMENT PANEL CLUSTER GAUGE NEEDLE FUNCTION MAY CAUSE INACCURATE READINGS ON SOME 2003-2004 CADILLAC, CHEVROLET, AND GMC VEHICLES. *NJ UPDATED 2/5/08. *NJ UPDATED 9/5/08. *PE UPDATED 11/4/08. *PE

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 ・ 2018-02-21

    Engine Misfire and Related Issues Notice

    1. 1Fault

      • With the SES light on, a P0300-P0308 DTC is found with misfires counting on a single cylinder that 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); it may be a chirp, squeak, squeal or tick and may increase off idle.

    2. 2Finding the cause

      Possible causes

      • When 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 valve side, push rod side and side of each rocker arm; if pressure on the valve side changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
      2. Measure cam lobe lift at the push rod side of the rocker arm and compare with other rockers on the same bank; the misfiring or ticking cylinder should have clearly less lift if a lifter roller and/or cam lobe is worn.
      3. A good indicator of a sticking valve is misfires that continue to count on an aggressive deceleration with engine braking.
      4. For a suspected sticking valve, snap the valve onto its seat and confirm it comes off easily; if force is needed to tap it off the seat, excessive carbon build up exists, which may be repaired by decarboning the engine.
      5. The Cylinder Leakage Test outlined in SI should isolate valve leakage by finding excessive leakage past an intake or exhaust valve compared with the others.
      1 more points

    3. 3Correction

      Repair

      • If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters per SI, and also replace the plastic lifter guide for the lifter that had the damage.

      Caution

      • A worn cam lobe is easy to overlook through the lifter bores, and unworn lifter rollers do not mean the related cam lobes are okay; both must be carefully inspected.
      • 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：The model list names GMC Yukon models, 2002 - 2014, with a V8 engine.
    • Condition：With the SES light on, a P0300-P0308 DTC is found with misfires counting on a single cylinder that 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); it may be a chirp, squeak, squeal or tick and may increase off idle.
    • Cause：When 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 valve side, push rod side and side of each rocker arm; if pressure on the valve side changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
    • Confirm：Measure cam lobe lift at the push rod side of the rocker arm and compare with other rockers on the same bank; the misfiring or ticking cylinder should have clearly less lift if a lifter roller and/or cam lobe is worn.
    • Confirm：A good indicator of a sticking valve is misfires that continue to count on an aggressive deceleration with engine braking.
    • Confirm：For a suspected sticking valve, snap the valve onto its seat and confirm it comes off easily; if force is needed to tap it off the seat, excessive carbon build up exists, which may be repaired by decarboning the engine.
    • Confirm：The Cylinder Leakage Test outlined in SI should isolate valve leakage by finding excessive leakage past an intake or exhaust valve compared with the others.
    • Confirm：A broken valve spring may stay stacked together and be hard to see, so lightly push on different places on the springs with a small hammer handle.
    • Repair：If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters per SI, and also replace the plastic lifter guide for the lifter that had the damage.
    • Caution：A worn cam lobe is easy to overlook through the lifter bores, and unworn lifter rollers do not mean the related cam lobes are okay; both must be carefully inspected.
    • 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.

Known issuesVehicle body tilt or lean left / right (torsion bar front suspension)1

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2017-08-15

    Vehicle Lean Preliminary Information

    1. 1Fault

      • The procedure is for customer complaints of the vehicle leaning left or right, whether the lean appears in the front, the rear, or both ends.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Measure the fender wheel-opening heights, front and rear, to quantify the lean.
      2. P height and R height are each the distance from the ground to the highest point of the wheel opening, measured through the center of the wheel.
      3. If the left-to-right difference in P and/or R height is 1/2 inch (12 mm) or less, no repairs are suggested because the vehicle is within specification; if it exceeds 1/2 inch (12 mm), follow one of the three diagnostics.

    3. 3Correction

      Repair

      1. Generally the stance can be adjusted with the torsion bar adjuster bolts.
      2. If Z height is out of spec and the D height difference is greater than 1/2 (12 mm), adjust Z height until it is within spec and the P and R height differences are less than 1/2 inch (12 mm).
      3. If adjustment is not possible, check the front eye of the rear leaf springs for matching color-coded tape or paint; if the two sides differ, switch the springs side to side, and if they match, replace the leaf spring on the lower side only.
      4. After all adjustments are done, perform a front-end alignment and check headlight aim.

      Caution

      • Before measuring, set the tire pressures to the pressure shown on the certification label.
      • Before measuring, check the fuel level and add weight if necessary to simulate a full tank.
      • The P and R heights are not set at the factory, and no specification is given for them.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model list includes the 1999 - 2006 GMC Yukon, Yukon XL, Yukon Denali and Yukon Denali XL.
    • Applies to：It applies to vehicles with torsion bar front suspension.
    • Condition：The procedure is for customer complaints of the vehicle leaning left or right, whether the lean appears in the front, the rear, or both ends.
    • Confirm：Measure the fender wheel-opening heights, front and rear, to quantify the lean.
    • Confirm：P height and R height are each the distance from the ground to the highest point of the wheel opening, measured through the center of the wheel.
    • Caution：Before measuring, set the tire pressures to the pressure shown on the certification label.
    • Caution：Before measuring, check the fuel level and add weight if necessary to simulate a full tank.
    • Confirm：If the left-to-right difference in P and/or R height is 1/2 inch (12 mm) or less, no repairs are suggested because the vehicle is within specification; if it exceeds 1/2 inch (12 mm), follow one of the three diagnostics.
    • Repair：Generally the stance can be adjusted with the torsion bar adjuster bolts.
    • Repair：If Z height is out of spec and the D height difference is greater than 1/2 (12 mm), adjust Z height until it is within spec and the P and R height differences are less than 1/2 inch (12 mm).
    • Repair：If adjustment is not possible, check the front eye of the rear leaf springs for matching color-coded tape or paint; if the two sides differ, switch the springs side to side, and if they match, replace the leaf spring on the lower side only.
    • Repair：After all adjustments are done, perform a front-end alignment and check headlight aim.
    • Caution：The P and R heights are not set at the factory, and no specification is given for them.

    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 lean to the left or right. Technician will need to measure fender wheel-opening heights, front and rear, to quantify vehicle lean. Fender wheel-opening heights are related to, but distinct from, trim height. The front wheel-opening height is known as P height, and the rear wheel-opening height is known as R height. Adjust and heights that are out of specification. After all adjustments are done, perform a front-end alignment and check headlight aim.

ELECTRICAL SYSTEM9

  1. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2023-12-26(8 earlier editions of this document folded here)

    Speedometer Needle Accuracy Information

    1. 1Fault

      • A customer may say the speedometer needle appears inaccurate.

    2. 2Finding the cause

      Possible causes

      • The speedometer needle is driven electrically by a stepper motor and some variation in accuracy is possible.
      • Tire size, tread life and inflation may cause some variation in the readings.

      Steps to confirm (in the document’s order)

      1. Digital readouts such as the "Digital Speedometer" on the DIC read the Vehicle Speed Sensor (VSS) directly and are much more accurate.
      2. The specification for needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.

    3. 3Correction

      Speedometer Needle Accuracy Information.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2003-2015 GMC Sierra and Yukon models (note: the Yukon years run later than the years this service covers).
    • Condition：A customer may say the speedometer needle appears inaccurate.
    • Cause：The speedometer needle is driven electrically by a stepper motor and some variation in accuracy is possible.
    • Confirm：Digital readouts such as the "Digital Speedometer" on the DIC read the Vehicle Speed Sensor (VSS) directly and are much more accurate.
    • Cause：Tire size, tread life and inflation may cause some variation in the readings.
    • Confirm：The specification for needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.

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

    Remedy
    Speedometer Needle Accuracy Information.

  2. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2023-10-18(1 earlier editions of this document folded here)

    IPC odometer programming method notification

    1. 1Fault

      • It is a reference guide for identifying which odometer programming method to use after replacing the instrument panel cluster (IPC).

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      1. The table lists the 2003-2006 Yukon with the odometer value stored in the IPC and SPS as the programming method.
      2. The SPS method is IPC reprogramming and setup using the service programming system (SPS).

      Caution

      • Vehicles not listed in the document need to follow the SPS Programming for Odometer.
      • Stable battery voltage is critical during programming; any fluctuation, spiking, over voltage or loss of voltage will interrupt it.
      • Install the EL-49642 SPS Programming Support Tool (GM Dealer Equipment Item #PSC-550) to maintain system voltage; if not available, connect a fully charged 12V jumper or booster pack disconnected from the AC supply, and do not connect a battery charger.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The bulletin is addressed to 2020 and prior GM passenger cars and trucks sold in the U.S. and Canada only.
    • Condition：It is a reference guide for identifying which odometer programming method to use after replacing the instrument panel cluster (IPC).
    • Repair：The table lists the 2003-2006 Yukon with the odometer value stored in the IPC and SPS as the programming method.
    • Repair：The SPS method is IPC reprogramming and setup using the service programming system (SPS).
    • Caution：Vehicles not listed in the document need to follow the SPS Programming for Odometer.
    • Caution：Stable battery voltage is critical during programming; any fluctuation, spiking, over voltage or loss of voltage will interrupt it.
    • Caution：Install the EL-49642 SPS Programming Support Tool (GM Dealer Equipment Item #PSC-550) to maintain system voltage; if not available, connect a fully charged 12V jumper or booster pack disconnected from the AC supply, and do not connect a battery charger.

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

    Remedy
    This informational bulletin provides information for the IPC odometer programming method quick reference guide.

  3. Manufacturer communication2003–2006 GMC YUKON ・ 2021-04-20

    IPC Odometer Programming Method Quick Reference Guide

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    IPC Odometer Programming Method Quick Reference Guide Season Odometer Programming Methods in Use Today 1. IPC reprogramming and setup using the service programming system (SPS). 2. Odometer setup at the electronic service center (ESC) when using an exchange IPC/DIC. 3. Tech 2® – The Tech 2 is used to set up a replacement BCM, which includes loading the odometer value that is displayed and stored in the IPC. A replacement IPC will display the previously stored vehicle odometer value, communicated from the BCM, after cycling the ignition or driving the vehicle. *The odometer programming is integrated as part of the BCM programming procedure. It is not a stand-alone event.

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

    IPC Odometer Programming Method Quick Reference

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      IPC Odometer Programming Method Quick Reference Guide

    Read the sentences of the record
    Remedy
    IPC Odometer Programming Method Quick Reference Guide

  5. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2018-05-21(1 earlier editions of this document folded here)

    Radio and Instrument Cluster Warranty Claims

    1. 1Fault

      • Radios and instrument panel clusters have been returned with physical damage that makes problem analysis difficult and the root cause impossible to determine.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This informational bulletin provides information regarding the inappropriate warranty claims submitted for damaged radios and instrument panel clusters, provides exampls on whats an acceptable for warranty and whats not

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2013 and prior GM passenger cars and light duty trucks.
    • Condition：Radios and instrument panel clusters have been returned with physical damage that makes problem analysis difficult and the root cause impossible to determine.

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

    Remedy
    This informational bulletin provides information regarding the inappropriate warranty claims submitted for damaged radios and instrument panel clusters, provides exampls on whats an acceptable for warranty and whats not

  6. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2017-12-14

    Inaccurate Odometer Reading – Preliminary Information

    1. 1Fault

      • A customer may say the odometer appears inaccurate compared with a known distance traveled.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Use a hand-held GPS unit to test the odometer.
      2. On a straight road over a mile long, mark the GPS waypoint when the odometer (not the trip odometer) rolls over a digit.
      3. Confirm that the original size tires and wheels are mounted and that the axle ratio is as specified on the SPID label and unmodified.
      4. If those are correct and the odometer is beyond the limit, consider the relationship between the VSS and the reluctor on the transmission output shaft.
      5. Closely inspect the associated wiring and any connectors in the circuits.

    3. 3Correction

      Repair

      • Finally, it may be necessary to exchange the IPC with a replacement unit.

      Caution

      • Generally a tolerance of plus or minus 4% is allowed.
      • Do not compare with another vehicle or with the trip odometer.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all brands and models, model years 2000 - 2018.
    • Condition：A customer may say the odometer appears inaccurate compared with a known distance traveled.
    • Caution：Generally a tolerance of plus or minus 4% is allowed.
    • Confirm：Use a hand-held GPS unit to test the odometer.
    • Confirm：On a straight road over a mile long, mark the GPS waypoint when the odometer (not the trip odometer) rolls over a digit.
    • Caution：Do not compare with another vehicle or with the trip odometer.
    • Confirm：Confirm that the original size tires and wheels are mounted and that the axle ratio is as specified on the SPID label and unmodified.
    • Confirm：If those are correct and the odometer is beyond the limit, consider the relationship between the VSS and the reluctor on the transmission output shaft.
    • Confirm：Closely inspect the associated wiring and any connectors in the circuits.
    • Repair：Finally, it may be necessary to exchange the IPC with a replacement unit.

    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 vehicle's odometer appears to be inaccurate relative to a known distance traveled. Technician should obtain a hand-held GPS unit to test the odometer. If a hand held GPS unit is not available, the only other option is to verify the miles traveled using a surveyor's wheel or a dynamometer.

  7. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2017-08-15

    Instrument Panel Cluster Mileage Programming Information

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      • When the odometer cannot be set to the actual vehicle mileage, it must be set at zero and a label affixed to the driver's door frame by the service agent.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2014 and prior GM passenger cars and trucks.
    • Repair：When the odometer cannot be set to the actual vehicle mileage, it must be set at zero and a label affixed to the driver's door frame by the service agent.

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

    Remedy
    This Preliminary Information communication provides information to the technician that after replacing the Instrument Panel Cluster the exchange center is unable to program the actual mileage on the odometer or the actual mileage is unknown. Dealer will need to follow dealer to the General Motors service policies and procedures manual section 3.2.4 odometer servicing.

  8. Manufacturer communication2003–2004 GMC YUKON ・ 2008-11-06

    Instrument Panel Gauge Needles Condition

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      CADILLAC CHEVROLET GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME VEHICLES COULD DEVELOP A CONDITION WHERE ONE OR MORE OF THE INSTRUMENT PANEL GAUGE NEEDLES MAY STICK, FLUTTER, OR BECOME INOPERATIVE. CSC LETTER RECEIVED. UPDATED 11/6/08. *PE

    Read the sentences of the record
    Remedy
    CADILLAC CHEVROLET GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME VEHICLES COULD DEVELOP A CONDITION WHERE ONE OR MORE OF THE INSTRUMENT PANEL GAUGE NEEDLES MAY STICK, FLUTTER, OR BECOME INOPERATIVE. CSC LETTER RECEIVED. UPDATED 11/6/08. *PE

  9. Manufacturer communication2003–2006 GMC YUKON ・ 2007-10-04

    Instrument Cluster Programming Concern

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      ONE OF THE FOLLOWING CONCERNS WHEN PROGRAMMING THE MILEAGE OR THE HOURS INTO AN EXCHANGE INSTRUMENT PANEL CLUSTER THAT IS RECEIVED FROM AN ELECTRONIC SERVICE CENTER (ESC). *NJ

    Read the sentences of the record
    Remedy
    ONE OF THE FOLLOWING CONCERNS WHEN PROGRAMMING THE MILEAGE OR THE HOURS INTO AN EXCHANGE INSTRUMENT PANEL CLUSTER THAT IS RECEIVED FROM AN ELECTRONIC SERVICE CENTER (ESC). *NJ

EXTERIOR LIGHTING4

  1. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2024-01-19(1 earlier editions of this document folded here)

    Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage

    1. 1Fault

    2. 2Finding the cause

      Possible causes

      • A variety of chemicals can cause crazing or cracking of the polycarbonate lens.
      • Bulbs with a higher output than original equipment run hotter, and the excess heat can melt the socket, housing or lens.

      Steps to confirm (in the document’s order)

      • Broken mounting tabs, rear housing fractures and loose components inside the lamp assembly are evidence of impact damage.

    3. 3Correction

      Repair

      • When servicing any exterior lighting assembly, transfer any electrical connection seals to the new part.

      Caution

      • Clean exterior lamps and lenses only with lukewarm or cold water, a soft cloth and a car washing soap.
      • Do not let a shop mat or fender cover drape over a headlamp while the DRL or headlamps are on; the lens may craze or deform.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2024 and prior GM passenger cars and trucks.
    • Cause：A variety of chemicals can cause crazing or cracking of the polycarbonate lens.
    • Caution：Clean exterior lamps and lenses only with lukewarm or cold water, a soft cloth and a car washing soap.
    • Caution：Do not let a shop mat or fender cover drape over a headlamp while the DRL or headlamps are on; the lens may craze or deform.
    • Confirm：Broken mounting tabs, rear housing fractures and loose components inside the lamp assembly are evidence of impact damage.
    • Cause：Bulbs with a higher output than original equipment run hotter, and the excess heat can melt the socket, housing or lens.
    • Repair：When servicing any exterior lighting assembly, transfer any electrical connection seals to the new part.

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

    Remedy
    This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.

  2. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2023-02-28(5 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.

  3. Owner complaint2003 GMC YUKON ・ 2008-01-15

    Front headlight caught fire while stopped at traffic light

    1. 1Fault

    2. 2Finding the cause

    3. 3CorrectionNot repaired

      THE VEHICLE HAS NOT YET BEEN REPAIRED.

    Read the sentences of the record
    Fault
    WHILE STOPPED AT A LIGHT, THE FRONT HEADLIGHT CAUGHT FIRE. (1 more)
    Remedy
    THE VEHICLE HAS NOT YET BEEN REPAIRED.

  4. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2007-11-02

    Turn Signal in Outside Rearview Mirror Does Not Illuminate

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    TURN SIGNAL IN CAMPER STYLE OUTSIDE REARVIEW MIRROR (RPO DPN) DOES NOT ILLUMINATE TURN SIGNAL FLASH (REPLACE UPPER MIRROR GLASS) *NJ

INTERIOR LIGHTING2

  1. Owner complaint2003 GMC YUKON DENALI ・ 2004-01-29

    '03 Yukon Denali - Interior and headlights flicker during left turns in darkness

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Fault
    '03 YUKON DENALI - WHILE DRIVING IN COMPLETE DARKNESS WHILE MAKING A LEFT SWEEPING TURN EVERY VISIBLE INTERIOR LIGHT TURNS OF AND ON FOR 1-2 SEC. (1 more)
    Remedy
    THEY REPLACED IT. (1 more)
    Inspection
    THE DEALER SAYS THEY NOE HAVE NO IDEA.
    Outcome
    THAT DID NOT SOLVE THE PROBLEM.

  2. Manufacturer communication2003–2006 GMC YUKON ・ 2007-06-15

    IPC Backlighting Inoperative with 2A Fuse Open

    1. 1Fault

      Not stated

    2. 2Finding the cause

    3. 3Correction

      IPC BACKLIGHTING INOPERATIVE TBC 2A FUSE OPEN. *KB

    Read the sentences of the record
    Remedy
    IPC BACKLIGHTING INOPERATIVE TBC 2A FUSE OPEN. *KB

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