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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:Gauge or instrument faultWarning lightLights (headlights, turn signals)Loss of engine power, no accelerationNoiseAir conditioning or heaterLeakCorrosion or rust

Record by record

145 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 back1
  • says it did not fix it7
  • result not stated5

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 (26)

Known issuesInstrument panel cluster gauges stick, flutter or stop working2

  1. Owner complaint2003 GMC YUKON DENALI ・ 2010-07-28

    Speedometer freezes while driving and other gauge lights burnt out

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      I EVENTUALLY DISCONNECTED THE VEHICLES BATTERY FOR APPROX. 30 MINUTES.

      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
    Fault
    WHILE DRIVING ON A TRIP THE SPEEDOMETER IN MY 2003 GMC YUKON DENALI FROZE ON 72 MPH (= 115.9 km/h). (1 more)
    Remedy
    I EVENTUALLY DISCONNECTED THE VEHICLES BATTERY FOR APPROX. 30 MINUTES.
    Outcome
    AFTER RECONNECTING BATTERY SPEEDOMETER APPEARED TO CORRECT ITSELF.

  2. Owner complaint2003 GMC YUKON DENALI ・ 2007-01-09

    Speedometer stopped working while driving on highway

    1. 1Fault

    2. 2Finding the cause

    3. 3CorrectionNot repaired

      AT THIS POINT NOTHING HAS BEEN REPAIRED AS I REFUSE TO PAY GM TO REPAIR A DEFECTIVE PART, WHICH THEY ARE AWARE OF.

      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
    Fault
    THE SPEEDOMETER IN MY VEHICLE HAS STOPPED WORKING WHILE DRIVING DOWN THEN HIGH WAY.
    Remedy
    AT THIS POINT NOTHING HAS BEEN REPAIRED AS I REFUSE TO PAY GM TO REPAIR A DEFECTIVE PART, WHICH THEY ARE AWARE OF.
    Consequence
    THIS FAILURE CAN LEAD TO ACCIDENTS AS WELL AS FINANCIAL BURDENS WHEN HAVING TO PAY FOR SPEEDING TICKETS DUE TO THE FAILURE TO MAINTAIN A SAFE SPEED.

Known issuesABS lamp with DTC C0265 (EBCM motor relay circuit) after EBCM replacement1

  1. Manufacturer communication2000–2005 GMC YUKON DENALI ・ 2019-06-03

    SPAC Contact Requirement – Preliminary Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Preliminary information communicates the need to contact SPAC until GM CCA has sufficient stock.

      What the documents say to do

      ABS lamp with DTC C0265 (EBCM motor relay circuit) after EBCM replacement

      Caution

      • An EBCM obtained from another dealer may also set C0265.
    Read the sentences of the record
    Remedy
    This Preliminary information communicates the need to contact SPAC until GM CCA has sufficient stock.

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

    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 issuesBrake pedal moves or self applies at full steering lock (Hydro-Boost)1

  1. Manufacturer communication2001–2004 GMC YUKON ・ 2023-06-13

    Hydro-Boost brake system service information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.

Known issuesSome OnStar features no longer work (2G cellular sunset; the module is not broken)1

  1. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2025-04-28(1 earlier editions of this document folded here)

    OnStar Module 2G Sunset Information

    1. 1Fault

      • Customers may comment on a notification and/or that some 2G OnStar module features are no longer operable.
      • One of the listed concerns is being unable to contact the OnStar Call Center.
      • All other functions within the OnStar module are unaffected, such as OnStar remote link, Bluetooth, microphone, and GPS.

    2. 2Finding the cause

      Possible causes

      • On December 31, 2022, the 2G cellular signal will no longer be active, causing some OnStar module features to be inoperable.
      • The 2G CDMA cellular network was decommissioned across Canada in 2015.

      Steps to confirm (in the document’s order)

      • Any other function in the Telematics Communication Interface Control Module (other than OnStar) is to be diagnosed as directed by SI.

    3. 3Correction

      Repair

      • The OnStar guardian app is being used as a replacement for the OnStar portion of the module.

      Caution

      • Do not replace the OnStar module because of the 2G shutdown.
      • If the vehicle is brought in for inactive/broken/inoperable OnStar features, do not replace the module; the module is not broken.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GMC Yukon models, model years 2003 to 2014.
    • Applies to：The involved region is North America.
    • Condition：Customers may comment on a notification and/or that some 2G OnStar module features are no longer operable.
    • Condition：One of the listed concerns is being unable to contact the OnStar Call Center.
    • Condition：All other functions within the OnStar module are unaffected, such as OnStar remote link, Bluetooth, microphone, and GPS.
    • Cause：On December 31, 2022, the 2G cellular signal will no longer be active, causing some OnStar module features to be inoperable.
    • Caution：Do not replace the OnStar module because of the 2G shutdown.
    • Caution：If the vehicle is brought in for inactive/broken/inoperable OnStar features, do not replace the module; the module is not broken.
    • Repair：The OnStar guardian app is being used as a replacement for the OnStar portion of the module.
    • Confirm：Any other function in the Telematics Communication Interface Control Module (other than OnStar) is to be diagnosed as directed by SI.
    • Cause：The 2G CDMA cellular network was decommissioned across Canada in 2015.

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

    Remedy
    This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

Known issuesAir bag (SIR) lamp on with DTC B1001 after BCM or SDM replacement1

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2020-04-13

    BCM or SDM Replacement: B1001 DTC Clearing Procedure

    1. 1Fault

      • The SIR lamp stays on steady after an SDM or BCM has been replaced, with DTC B1001 current in the SDM.

    2. 2Finding the cause

      Possible causes

      • When the ignition is first turned to RUN, the SDM compares the restraints ID stored in the SDM to the restraints ID stored in the body control module (BCM).
      • B1001 sets if the restraints ID in the SDM does not match the one in the BCM, or the VIN information in the SDM does not match the VIN information stored in the PCM/VCM.

    3. 3Correction

      Repair

      1. A replaced SDM or BCM must learn the restraints ID, which requires performing a 10 minute V.T.D. "Vehicle Theft Deterrent - Learn" with the Tech 2.
      2. On some vehicles a calibration may need to be selected after choosing "Vehicle Theft Deterrent - Learn"; select the one labeled "Vehicle Theft Deterrent for Passlock sensor".

      Caution

      • A 30 minute Theft relearn will not allow the SDM or BCM to learn the restraints ID.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model table lists GMC Yukon models for model years 2000 - 2006, among other GM trucks, except export vehicles (RPO EXP).
    • Condition：The SIR lamp stays on steady after an SDM or BCM has been replaced, with DTC B1001 current in the SDM.
    • Cause：When the ignition is first turned to RUN, the SDM compares the restraints ID stored in the SDM to the restraints ID stored in the body control module (BCM).
    • Cause：B1001 sets if the restraints ID in the SDM does not match the one in the BCM, or the VIN information in the SDM does not match the VIN information stored in the PCM/VCM.
    • Repair：A replaced SDM or BCM must learn the restraints ID, which requires performing a 10 minute V.T.D. "Vehicle Theft Deterrent - Learn" with the Tech 2.
    • Repair：On some vehicles a calibration may need to be selected after choosing "Vehicle Theft Deterrent - Learn"; select the one labeled "Vehicle Theft Deterrent for Passlock sensor".
    • Caution：A 30 minute Theft relearn will not allow the SDM or BCM to learn the restraints ID.

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

    Remedy
    This Preliminary information communicates information to dealership on how to clear a B1001 DTC after replacing the BCM or SDM.

Known issuesSpeedometer needle appears inaccurate (specification +/- 2 MPH)1

  1. Manufacturer communication2003–2006 GMC YUKON ・ 2024-08-13(2 earlier editions of this document folded here)

    Speedometer Needle Accuracy Preliminary Information

    1. 1Fault

      • A customer may say the speedometer needle appears inaccurate.

    2. 2Finding the cause

      Possible causes

      • An instrument panel cluster with a physical speedometer needle drives the needle electrically with a stepper motor, and some variation in accuracy is possible.

      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

      This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle. Â

      What the documents say to do

      Speedometer needle appears inaccurate (specification +/- 2 MPH)

      Confirm

      • The needle accuracy specification is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.

      Caution

      • Tire size, tread life and inflation may cause some variation in the readings.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2003 - 2024 GMC Yukon models (note: the years run later than the years this service covers).
    • Condition：A customer may say the speedometer needle appears inaccurate.
    • Cause：An instrument panel cluster with a physical speedometer needle drives the needle electrically with 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.
    • 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
    This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle. Â

ELECTRICAL SYSTEM18

  1. Owner complaint2003 GMC YUKON ・ 2022-04-18

    Multiple electrical and suspension failures, air bag warning on 2003 GMC Yukon

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Fault
    The contact stated that upon purchasing the vehicle from a towing company, the vehicle would not start. (2 more)
    Remedy
    The battery was instantly replaced. (2 more)
    Inspection
    The independent mechanic then took the vehicle to an electrical failure specialist where it was diagnosed that the front end of the vehicle was experiencing electrical failures.

  2. Manufacturer communication2000–2006 GMC YUKON ・ 2024-10-25(2 earlier editions of this document folded here)

    Tire Pressure Monitor and Diagnostic Tools Software Update

    1. 1Fault

      • The process for reaching the GM Tools site has changed.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：All brands and models, model years 1995 - 2025.
    • Condition：The process for reaching the GM Tools site has changed.

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

    Remedy
    This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-08-26

    GM Vehicle Wide Programming (VWP) Software Update Process

    1. 1Fault

      • Vehicle Wide Programming (VWP) is a new process to update software on GM vehicles.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Various GM makes and models.
    • Condition：Vehicle Wide Programming (VWP) is a new process to update software on GM vehicles.

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

    Remedy
    Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

  4. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-06-25

    Service Programming System Error Codes E4398-E6961 Service Information

    1. 1Fault

      • Some technicians may notice Service Programming System (SPS) errors; the document gives the troubleshooting for them.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and light duty trucks, model years 2000 to 2025.
    • Condition：Some technicians may notice Service Programming System (SPS) errors; the document gives the troubleshooting for them.

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

    Remedy
    This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

  5. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2024-04-05(2 earlier editions of this document folded here)

    Electrical Ground Repair Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Possible causes

      • Loose, stripped or corroded ground connections increase the possibility of improper system function and loss of module communication, and may lead to unnecessary repairs and component replacement.

    3. 3Correction

      Repair

      1. For a damaged or missing M6 ground stud, select an adjacent location with 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in) clearance around the M6 conductive rivet stud flange.
      2. Drill a 10 mm (0.40 in) diameter hole through the panel.
      3. Remove paint and primer from the area around the 10 mm (0.40 in) hole until bare metal is visible.
      4. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive rivet stud.
      5. Install the M6 conductive nut to the rivet stud and tighten to 71 lb in (= 8.02 N·m).

      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.

      2 more points

      Parts

      • Conductive-finish fasteners: 11561645 M6 nut, 11570340 M6 rivet stud, 11588564 M8 bolt, 11609412 M8 nut, 11609538 M7 bolt (self-threading), 11609669 M6 bolt.

      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

      • Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.
      • The rivet stud and surrounding panel area must be refinished before the ground wire terminal and conductive nut are installed, to keep the ground secure, stable and corrosion-free.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2024 and earlier GM passenger cars and trucks, including medium duty and heavy duty.
    • Cause：Loose, stripped or corroded ground connections increase the possibility of improper system function and loss of module communication, and may lead to unnecessary repairs and component replacement.
    • Caution：Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.
    • Repair：For a damaged or missing M6 ground stud, select an adjacent location with 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in) clearance around the M6 conductive rivet stud flange.
    • Repair：Drill a 10 mm (0.40 in) diameter hole through the panel.
    • Repair：Remove paint and primer from the area around the 10 mm (0.40 in) hole until bare metal is visible.
    • Caution：The rivet stud and surrounding panel area must be refinished before the ground wire terminal and conductive nut are installed, to keep the ground secure, stable and corrosion-free.
    • Repair：Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive rivet stud.
    • Repair：Install the M6 conductive nut to the rivet stud and tighten to 71 lb in (= 8.02 N·m).
    • Repair：If the M6 weld nut at the ground location is damaged or stripped, a M7 conductive self-threading bolt may be used to secure the ground wire terminal.
    • Repair：Install the M7 conductive self-threading bolt and tighten to 80 lb in (= 9.04 N·m).
    • Parts：Conductive-finish fasteners: 11561645 M6 nut, 11570340 M6 rivet stud, 11588564 M8 bolt, 11609412 M8 nut, 11609538 M7 bolt (self-threading), 11609669 M6 bolt.

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

    Remedy
    This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

  6. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2023-10-18(2 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.

  7. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2022-11-02

    Module Harvesting Service Bulletin

    1. 1Fault

      • To find the root cause of some component drains or logic lockups, the module is retrieved for analysis without being reset, by keeping it powered with a small battery.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This service bulletin provides information on Module Harvesting.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all passenger cars and trucks, 2000 to 2023 model years.
    • Condition：To find the root cause of some component drains or logic lockups, the module is retrieved for analysis without being reset, by keeping it powered with a small battery.

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

    Remedy
    This service bulletin provides information on Module Harvesting.

  8. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2021-07-06

    EVAP System Leak Diagnosis for MIL with DTCs P0442/P0455

    1. 1Fault

      • The MIL is illuminated and DTC P0442 (EVAP small leak detected) and/or P0455 (EVAP large leak detected) is set in the Engine Control Module (ECM).

    2. 2Finding the cause

      Possible causes

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

      Steps to confirm (in the document’s order)

      1. Inspect all purge connections for proper installation and look for damage or wear along the lines; if damage is seen, confirm with the smoke test.
      2. Some leaks show only under pressure and some only under vacuum, so check both ways.
      3. Cycling the purge and vent solenoids with GDS2 while inspecting may indicate a sticking valve.
      4. Critical connections on the engine side: purge tube to purge valve at the intake manifold, purge tube to chassis EVAP line at the rear of the engine near the transmission, and chassis EVAP line to canister.
      5. Critical connections on the tank side: fuel tank load line to canister, vent valve line to vent valve, fuel tank load line jumper connection near the fuel tank, and the fuel tank cap being closed properly.
      2 more points

    3. 3Correction

      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.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and trucks, including medium duty, model years 2000 to 2021.
    • Applies to：The bulletin applies only to vehicles with gasoline engines.
    • Condition：The MIL is illuminated and DTC P0442 (EVAP small leak detected) and/or P0455 (EVAP large leak detected) is set in the Engine Control Module (ECM).
    • Cause：DTC P0455 sets for a large leak or a purge blockage; a large leak can come from an unseated tube connection, a damaged tube, a stuck open canister vent valve or a stuck closed purge valve.
    • Cause：DTC P0442 sets for a small leak, which can come from a stuck open purge valve or a stuck open canister vent valve.
    • Confirm：Inspect all purge connections for proper installation and look for damage or wear along the lines; if damage is seen, confirm with the smoke test.
    • Confirm：Some leaks show only under pressure and some only under vacuum, so check both ways.
    • Confirm：Cycling the purge and vent solenoids with GDS2 while inspecting may indicate a sticking valve.
    • Confirm：Critical connections on the engine side: purge tube to purge valve at the intake manifold, purge tube to chassis EVAP line at the rear of the engine near the transmission, and chassis EVAP line to canister.
    • Confirm：Critical connections on the tank side: fuel tank load line to canister, vent valve line to vent valve, fuel tank load line jumper connection near the fuel tank, and the fuel tank cap being closed properly.
    • Confirm：If all connections are good, check the vent valve for a stuck open position.
    • Confirm：If the vent valve is verified to be functioning correctly, go on to investigate the purge valve.

    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.

  9. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2021-04-20

    OnStar Voice Fallback Number Update

    1. 1Fault

      Not stated

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Remedy
    OnStar® Voice Fallback Number Update Some customers may have received a letter from OnStar® stating that "We recently tried to provide a software update to the OnStar® hardware in your vehicle. However, your system could not be updated remotely. As a result, some of your OnStar® system functions may not be working as expected." The customer is further instructed in this letter to "Please contact your dealer – or any dealer near you – as soon as possible to schedule an appointment for this no-cost software update. Your dealer will reprogram your OnStar® module with an update. This is for vehicles that have previously received the Canada upgrade as described in Service Bulletin #15-08-44-001F."

  10. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2019-11-12

    Preliminary Information: Vibration Diagnosis Using Pico Oscilloscope

    1. 1Fault

      • Customers complain of vehicle vibration under any of various driving conditions.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Drive the vehicle to verify the condition and record a Pico data file of the concern.
      2. Review the Pico file and use it to help determine the root cause or component.

    3. 3Correction

      Repair

      • Repair the vehicle using the Pico information together with any published information relevant to the vibration frequency observed.

      Caution

      • Attempting a vibration repair without knowing the frequency is compared to repairing a check engine light without knowing the stored DTC.
      • 12-03-10-001B is a generic document on the possibility of tire to rim orientation and of the tire slipping on the rim.
      • Component level vibrations such as blower motor, brake pulsation or shudder on turns do not require a Pico file.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：All models, model years 2000 - 2020.
    • Condition：Customers complain of vehicle vibration under any of various driving conditions.
    • Caution：Attempting a vibration repair without knowing the frequency is compared to repairing a check engine light without knowing the stored DTC.
    • Confirm：Drive the vehicle to verify the condition and record a Pico data file of the concern.
    • Confirm：Review the Pico file and use it to help determine the root cause or component.
    • Repair：Repair the vehicle using the Pico information together with any published information relevant to the vibration frequency observed.
    • Caution：12-03-10-001B is a generic document on the possibility of tire to rim orientation and of the tire slipping on the rim.
    • Caution：Component level vibrations such as blower motor, brake pulsation or shudder on turns do not require a Pico file.

    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 vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include ?Vibration? ?Business Associate Code? and the last 8 of the Vehicle Identification Number.

  11. Manufacturer communication2000–2005 GMC YUKON DENALI ・ 2019-06-03

    SPAC Contact Requirement Pending GM CCA Stock

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Preliminary information communicates the need to contact SPAC until GM CCA has sufficient stock.

    Read the sentences of the record
    Remedy
    This Preliminary information communicates the need to contact SPAC until GM CCA has sufficient stock.

  12. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-06-18

    Apple Device USB Connectivity Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      • Use only Apple cables/cords for diagnostic testing on any concern involving an Apple device.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all models 2000 - 2019 equipped with a USB port.
    • Repair：Use only Apple cables/cords for diagnostic testing on any concern involving an Apple device.

    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 connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.

  13. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2018-06-04

    Informational Bulletin Update 13-00-89-004A

    1. 1Fault

      • The bulletin is a table listing, by model year and vehicle line, a condition, what to do, what not to do and the reference bulletin.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This informational bulletin provides a revision for 13-00-89-004A to include updated information.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2014 and prior GM passenger cars and trucks.
    • Condition：The bulletin is a table listing, by model year and vehicle line, a condition, what to do, what not to do and the reference bulletin.

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

    Remedy
    This informational bulletin provides a revision for 13-00-89-004A to include updated information.

  14. Manufacturer communication2003–2004 GMC YUKON DENALI ・ 2018-05-21

    OnStar System Update Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This informational bulletin advises the technician to update the Onstar from an analog system to a digital system if the customer wishes.

    Read the sentences of the record
    Remedy
    This informational bulletin advises the technician to update the Onstar from an analog system to a digital system if the customer wishes.

  15. Manufacturer communication2002–2005 GMC YUKON DENALI ・ 2018-05-21

    Aftermarket Device Interference with OnStar Diagnostic

    1. 1Fault

      • The bulletin covers aftermarket devices connected to the Diagnostic Link Connector (DLC) and their effect on OnStar diagnostic probes and Vehicle Diagnostic e-mails.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This informational bulletin provides information regarding the aftermarket device interference with onstar diagnostic service.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2013 and prior GM passenger cars and trucks equipped with OnStar (RPO UE1).
    • Condition：The bulletin covers aftermarket devices connected to the Diagnostic Link Connector (DLC) and their effect on OnStar diagnostic probes and Vehicle Diagnostic e-mails.

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

    Remedy
    This informational bulletin provides information regarding the aftermarket device interference with onstar diagnostic service.

  16. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-05-21

    Informational Bulletin on Latest PI and Service Bulletins

    1. 1Fault

      • The document is a field product reminder list of issues by vehicle line under the heading Fix it Right the First Time; it is an index to other documents.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This informational bulletin provides a list of newly released PI and Bulletins in regards to recent released vehicles so that vehicles can be fixed right the first time in for service.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2013 and earlier GM passenger cars and trucks.
    • Condition：The document is a field product reminder list of issues by vehicle line under the heading Fix it Right the First Time; it is an index to other documents.

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

    Remedy
    This informational bulletin provides a list of newly released PI and Bulletins in regards to recent released vehicles so that vehicles can be fixed right the first time in for service.

  17. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-05-21(1 earlier editions of this document folded here)

    OnStar Module Software Update via GSA

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • Verify in the Investigate Vehicle History (IVH) whether the upgrade has been completed before proceeding.

    3. 3Correction

      Repair

      1. Because GDS 2 will not decode the VIN of a vehicle originally supported by the Tech 2, a manual selection must be performed.
      2. Select Additional Options, then select the OnStar Canada GSM option.

      Caution

      • On GSM-upgraded vehicles, the GDS 2 must be used for scan tool communication with the Telematics Communication Interface Control Module (TCICM), or OnStar module.
      • All scan tool communications with other modules on these vehicles continue to be performed using the Tech 2.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model list addresses 2000-2009 GM passenger cars and light duty trucks.
    • Applies to：The bulletin only applies to vehicles that have been involved in the Canadian OnStar cellular communication upgrade.
    • Confirm：Verify in the Investigate Vehicle History (IVH) whether the upgrade has been completed before proceeding.
    • Caution：On GSM-upgraded vehicles, the GDS 2 must be used for scan tool communication with the Telematics Communication Interface Control Module (TCICM), or OnStar module.
    • Caution：All scan tool communications with other modules on these vehicles continue to be performed using the Tech 2.
    • Repair：Because GDS 2 will not decode the VIN of a vehicle originally supported by the Tech 2, a manual selection must be performed.
    • Repair：Select Additional Options, then select the OnStar Canada GSM option.

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

    Remedy
    This informational bulletin explains how to update the older Onstar module software to new software over GSA.

  18. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-05-07

    Turn-by-Turn Navigation Limitations for Canadian Vehicles in US

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Possible causes

      • The condition exists because the existing cell phone provider has no roaming agreements in areas outside of Canada.

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Second if the customer uses the OnStar RemoteLink app they can send the directions to the vehicle. The third option would be to have the vehicle loaded with a ?500 phone number? The customer will no longer be able to use their Hands Free Calling minutes when the new 500 phone number is loaded. If a customer chooses to restore Hands Free Calling in the future a new phone number will be assigned to the vehicle; previous phone numbers are not available.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all 2000-2015 GM passenger cars and light duty trucks with a Gen6, Gen7, Gen8, Gen9 or Gen10 OnStar system.
    • Cause：The condition exists because the existing cell phone provider has no roaming agreements in areas outside of Canada.

    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 are travelling from Canada to the United States. While in the United States they are unable to receive Turn-by-Turn directions. Due to the existing cellular provider not having roaming agreements in areas outside of Canada to support transmitting of the packet data required for Turn-By-Turn feature to operate. The customer has 3 options while traveling through the United Sates. First if the vehicle is equipped with a navigation radio they can request a "Destination Download" to the vehicle. Second if the customer uses the OnStar RemoteLink app they can send the directions to the vehicle. The third option would be to have the vehicle loaded with a ?500 phone number? The customer will no longer be able to use their Hands Free Calling minutes when the new 500 phone number is loaded. If a customer chooses to restore Hands Free Calling in the future a new phone number will be assigned to the vehicle; previous phone numbers are not available.

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3 owner complaints have no classified sentences yet, so their causes and repairs are not picked out. Their text is in the list of records.