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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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1 conditions added

Common on this vehicle:Warning lightMisfire or rough idleHard start or long crankDoes not startLoss of engine power, no accelerationStalls or shuts offNoiseFuel smell

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28 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

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 (12)

ENGINE AND ENGINE COOLING5

  1. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2023-04-13(2 earlier editions of this document folded here)

    Diagnostic tip on valve, lifter or camshaft issues

    1. 1Fault

      • Misfire, chirp, squeak, squeal or tick noise, with the MIL illuminated and DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 set.

    2. 2Finding the cause

      Possible causes

      • A worn cam lobe on this engine family generally creates a consistent chirp, squeak, squeal or tick at camshaft speed and/or a misfire with a P0300-P0308 DTC.

      Steps to confirm (in the document’s order)

      1. A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).
      2. If applying pressure to the valve side of a rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
      3. Measure cam lobe lift at the push rod side of the rocker arm; it differs from the SI specification but should be similar to the other rockers on the same bank.
      4. A bore scope or pen light helps when inspecting the cam lobes through the lifter bores; a damaged lobe is easy to overlook.
      5. A good indicator of a sticking valve is that misfires continue to count on an aggressive deceleration with engine braking.
      2 more points

    3. 3Correction

      Repair

      1. If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters following SI procedures.
      2. If force is needed to tap the valve off its seat, excessive carbon build up exists, which may be repaired by decarbonizing the engine.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：GM passenger cars and trucks with V6/V8 pushrod engines, model years 2002 to 2023.
    • Condition：Misfire, chirp, squeak, squeal or tick noise, with the MIL illuminated and DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 set.
    • Confirm：A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).
    • Cause：A worn cam lobe on this engine family generally creates a consistent chirp, squeak, squeal or tick at camshaft speed and/or a misfire with a P0300-P0308 DTC.
    • Confirm：If applying pressure to the valve side of a rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
    • Confirm：Measure cam lobe lift at the push rod side of the rocker arm; it differs from the SI specification but should be similar to the other rockers on the same bank.
    • Confirm：A bore scope or pen light helps when inspecting the cam lobes through the lifter bores; a damaged lobe is easy to overlook.
    • Repair：If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters following SI procedures.
    • Confirm：A good indicator of a sticking valve is that misfires continue to count on an aggressive deceleration with engine braking.
    • Repair：If force is needed to tap the valve off its seat, excessive carbon build up exists, which may be repaired by decarbonizing the engine.
    • Confirm：Valve leakage is typically isolated by the Cylinder Leakage Test in SI, which finds excessive leakage past an intake or exhaust valve compared with the others.
    • Confirm：The two pieces of a broken valve spring may stay stacked together and be hard to see; lightly pushing on different places on the springs with a small hammer handle may help.

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

    Remedy
    This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.

  2. Manufacturer communication2002–2004 GMC YUKON ・ 2005-11-03

    Flexible Fuel (RPO L59) Rough Idle and Misfire Diagnostic

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      FLEXIBLE FUEL (RPO L59) ROUGH IDLE, MISFIRE, MALFUNCTION INDICATOR LAMP DIAGNOSTIC TROUBLE CODE P0300. *TT

    Read the sentences of the record
    Remedy
    FLEXIBLE FUEL (RPO L59) ROUGH IDLE, MISFIRE, MALFUNCTION INDICATOR LAMP DIAGNOSTIC TROUBLE CODE P0300. *TT

  3. Manufacturer communication2000 GMC YUKON ・ 2004-11-17

    Service Engine Soon Light and P0300 When Towing, Cruising Uphill or Hard Acceleration

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SERVICE ENGINE SOON LIGHT AND P0300 WHEN TOWING, CRUISING UPHILL OR ON HARD ACCELERATION. *TT

    Read the sentences of the record
    Remedy
    SERVICE ENGINE SOON LIGHT AND P0300 WHEN TOWING, CRUISING UPHILL OR ON HARD ACCELERATION. *TT

  4. Manufacturer communication2003–2005 GMC YUKON ・ 2004-11-17

    Check Engine Light with P0300 DTC for 2-4 Cylinder Misfires

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE. *TT

    Read the sentences of the record
    Remedy
    CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE. *TT

  5. Manufacturer communication2000–2005 GMC YUKON ・ 2004-10-14

    Service Engine Soon Light with P0300 Misfire on Cylinder 7 Communication

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SERVICE ENGINE SOON LIGHT WITH A P0300 MISFIRE DUE TO MISFIRES MAINLY ON CYLINDER 7. *TT

    Read the sentences of the record
    Remedy
    SERVICE ENGINE SOON LIGHT WITH A P0300 MISFIRE DUE TO MISFIRES MAINLY ON CYLINDER 7. *TT

ENGINE3

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-07-16(5 earlier editions of this document folded here)

    Fuel Injection Cleaner Kit Service Bulletin

    1. 1Fault

      • Rough idle, crank no start, extended crank or misfire, with the engine warning lamp on and DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 set.
      • When the engine is cold, compression on multiple cylinders may be zero.
      • The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.

    2. 2Finding the cause

      Possible causes

      • Major carbon build-up on the intake and/or exhaust valves from fuel contamination or incomplete burning of the fuel; misfires should not appear before at least 8,000 km (5,000 mi).

    3. 3Correction

      Repair

      1. If there is no valve damage and no cam follower out of place, perform the cleaning procedure to free sticking valves and remove carbon from the valves and pistons.
      2. If valves are damaged or cam followers are out of place, make the engine mechanical repairs first and then perform the cleaning procedure to prevent a return.
      3. Fill Cleaner Kit J-35800-A with about 650 ml (22 oz, 2 cans) of Air Intake, Combustion Chamber Cleaner and set the air pressure at the tool to 260 kPa (40 psi).
      4. With GDS 2 or a scan tool, command engine idle to 2000 rpm so the engine does not stall.
      5. With the engine at operating temperature in a well-ventilated area, slowly and carefully induce the cleaner into the engine, taking about 3 minutes.

      Parts

      • The Top Engine Cleaning Kit (ACDelco Air Intake, Valve and Combustion Chamber Cleaner and ACDelco Fuel System Cleaner 44K) is 19435372 for the U.S. and Canada.

      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

      • Inducing too much cleaner at too low an RPM, or stalling the engine with too much cleaner at once, may hydro-lock the engine and bend a connecting rod.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and trucks with gasoline engines only, model years 2000 to 2025.
    • Condition：Rough idle, crank no start, extended crank or misfire, with the engine warning lamp on and DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 set.
    • Condition：When the engine is cold, compression on multiple cylinders may be zero.
    • Condition：The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.
    • Cause：Major carbon build-up on the intake and/or exhaust valves from fuel contamination or incomplete burning of the fuel; misfires should not appear before at least 8,000 km (5,000 mi).
    • Repair：If there is no valve damage and no cam follower out of place, perform the cleaning procedure to free sticking valves and remove carbon from the valves and pistons.
    • Repair：If valves are damaged or cam followers are out of place, make the engine mechanical repairs first and then perform the cleaning procedure to prevent a return.
    • Caution：Inducing too much cleaner at too low an RPM, or stalling the engine with too much cleaner at once, may hydro-lock the engine and bend a connecting rod.
    • Repair：Fill Cleaner Kit J-35800-A with about 650 ml (22 oz, 2 cans) of Air Intake, Combustion Chamber Cleaner and set the air pressure at the tool to 260 kPa (40 psi).
    • Repair：With GDS 2 or a scan tool, command engine idle to 2000 rpm so the engine does not stall.
    • Repair：With the engine at operating temperature in a well-ventilated area, slowly and carefully induce the cleaner into the engine, taking about 3 minutes.
    • Parts：The Top Engine Cleaning Kit (ACDelco Air Intake, Valve and Combustion Chamber Cleaner and ACDelco Fuel System Cleaner 44K) is 19435372 for the U.S. and Canada.

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

    Remedy
    This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

  2. Manufacturer communication2000–2006 GMC YUKON ・ 2023-09-18(6 earlier editions of this document folded here)

    Misfire and DTC Codes Diagnostic Information

    1. 1Fault

      • With DTC P0300 - P0308 and/or P050D, use GDS and save the freeze frame records.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Perform the relative compression test in the PICO NVH or Oscilloscope software; SI Document number 5518386 covers the procedure.
      2. If it passes the relative compression test, the concern is an ignition or fuel delivery issue.
      3. Check the ignition supply voltage to the ignition module/coil assemblies and also to the fuel injectors.
      4. Inspect the spark plugs for anything abnormal.
      5. Note the fuel trim values and on which bank, and compare actual MAF with calculated air flow.
      2 more points

    3. 3Correction

      Caution

      • The injector balance procedure in GDS is only a preliminary test and its results should not decide injector replacement, especially with a low or no flow injector.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：All brands and models with gas engines, model years 2000 - 2024.
    • Condition：With DTC P0300 - P0308 and/or P050D, use GDS and save the freeze frame records.
    • Confirm：Perform the relative compression test in the PICO NVH or Oscilloscope software; SI Document number 5518386 covers the procedure.
    • Confirm：If it passes the relative compression test, the concern is an ignition or fuel delivery issue.
    • Confirm：Check the ignition supply voltage to the ignition module/coil assemblies and also to the fuel injectors.
    • Confirm：Inspect the spark plugs for anything abnormal.
    • Caution：The injector balance procedure in GDS is only a preliminary test and its results should not decide injector replacement, especially with a low or no flow injector.
    • Confirm：Note the fuel trim values and on which bank, and compare actual MAF with calculated air flow.
    • Confirm：Check for a possible fuel quality issue, especially with a cold engine hard start and/or a misfire on all cylinders.
    • Confirm：Confirm whether a crankshaft variation learn has been completed and whether there is any abnormal engine noise possibly related to the misfire.

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

    Remedy
    This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2017-08-15(1 earlier editions of this document folded here)

    Engine Misfire and Rough Idle Malfunction Indicator Lamp

    1. 1Fault

      • Customers may complain of a MIL and/or engine misfire, rough idle, extended crank, or crank no start.
      • One or more misfire codes (DTC P0300-P0308) are found stored in the ECM.

    2. 2Finding the cause

      Possible causes

      • The condition may result from major carbon build up on the intake and/or exhaust valves due to fuel contamination or incomplete burning of the fuel.

      Steps to confirm (in the document’s order)

      1. With the engine cold, compression on multiple cylinders may read 0 PSI (= 0 kPa).
      2. The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.

    3. 3Correction

      Repair

      1. If there is valve damage or cam followers are out of place, make the mechanical repairs first, then perform the cleaning procedure to keep the concern from returning.
      2. With the engine at operating temperature, slowly induce a bottle of GM Upper Engine and Fuel Injection Cleaner with RPM held above idle so the engine does not stall (typically around 2,000 RPM).
      3. Turn the engine off and let the cleaner soak for 2.5 to 3 hours.
      4. To complete the repair, change the engine oil and filter.

      Parts

      • Upper Engine and Fuel Injector Cleaner is P/N 88861803 (in Canada, P/N 88861804).

      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

      • Inducing too much cleaner at too low an RPM, or stalling the engine with cleaner, may hydro-lock the engine and bend a connecting rod.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all 2000-2015 light duty trucks with gasoline engines.
    • Condition：Customers may complain of a MIL and/or engine misfire, rough idle, extended crank, or crank no start.
    • Condition：One or more misfire codes (DTC P0300-P0308) are found stored in the ECM.
    • Cause：The condition may result from major carbon build up on the intake and/or exhaust valves due to fuel contamination or incomplete burning of the fuel.
    • Confirm：With the engine cold, compression on multiple cylinders may read 0 PSI (= 0 kPa).
    • Confirm：The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.
    • Repair：If there is valve damage or cam followers are out of place, make the mechanical repairs first, then perform the cleaning procedure to keep the concern from returning.
    • Repair：With the engine at operating temperature, slowly induce a bottle of GM Upper Engine and Fuel Injection Cleaner with RPM held above idle so the engine does not stall (typically around 2,000 RPM).
    • Repair：Turn the engine off and let the cleaner soak for 2.5 to 3 hours.
    • Repair：To complete the repair, change the engine oil and filter.
    • Caution：Inducing too much cleaner at too low an RPM, or stalling the engine with cleaner, may hydro-lock the engine and bend a connecting rod.
    • Parts：Upper Engine and Fuel Injector Cleaner is P/N 88861803 (in Canada, P/N 88861804).

    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 Malfunction Indicator Lamp on or engine misfire, rough idle, extended crank, or crank no start in some cases. Technician will need to perform published Service Information diagnostics. If technician finds carbon an upper engine and valve cleaning should be performed.

ELECTRICAL SYSTEM2

  1. Manufacturer communication2000–2002 GMC YUKON ・ 2004-02-27

    Malfunction Indicator Lamp with P0300 Code, 1996-1999 P32 Models

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING 1996 - 1999 P32 MODELS. SIT BULLETIN 1416475. *TT

    Read the sentences of the record
    Remedy
    MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING 1996 - 1999 P32 MODELS. SIT BULLETIN 1416475. *TT

  2. Manufacturer communication2000–2002 GMC YUKON ・ 2003-11-22

    Malfunction Indicator Lamp with P0300 Code and Misfire

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING THE 1996-1999 P32 AND THE 1996-2002 GMC C/K TRUCK. *TT

    Read the sentences of the record
    Remedy
    MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING THE 1996-1999 P32 AND THE 1996-2002 GMC C/K TRUCK. *TT

EQUIPMENT1

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

    Winter Fuel Grade Use in Warm Months 2020 – Drivability Issues

    1. 1Fault

      • In rare instances customers may complain of a fuel smell, longer starts, hesitation and, in extreme cases, engine stalls.
      • Any combination of DTCs P0300, P0171, P0174 and P228C may be set.

    2. 2Finding the cause

      Possible causes

      • Using winter fuel in summer weather may cause drivability concerns.

      Steps to confirm (in the document’s order)

      • The concern should not be a single event but multiple occurrences associated with hot days.

    3. 3Correction

      Caution

      • No repair is required; the vehicles are not damaged and will recover.
      • There is no other remedy until summer fuel and/or cooler weather is available.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all brands and models with gasoline engines, model years 2000 - 2022.
    • Applies to：The involved region is North America.
    • Condition：In rare instances customers may complain of a fuel smell, longer starts, hesitation and, in extreme cases, engine stalls.
    • Condition：Any combination of DTCs P0300, P0171, P0174 and P228C may be set.
    • Cause：Using winter fuel in summer weather may cause drivability concerns.
    • Confirm：The concern should not be a single event but multiple occurrences associated with hot days.
    • Caution：No repair is required; the vehicles are not damaged and will recover.
    • Caution：There is no other remedy until summer fuel and/or cooler weather is available.

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

    Remedy
    This Preliminary information communicates the use of Winter grade fuel during the warm months of 2020 and the potential rivability issues that it can cause. The ongoing Coronavirus (COVID-19) pandemic has caused significant reductions in driving and fuel use.  Due to the surplus of winter grade fuel sitting in storage (pipelines/stations) the EPA is waiving the fuel vapor requirement.  This will extend the use of winter fuel into the summer months. The drivability concerns should not be single events but should be multiple occurrences associated with hot days.

FUEL SYSTEM, GASOLINE1

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

    E85 Fuel Effects on Non-E85 Vehicles Information

    1. 1Fault

      • Using this fuel in a non-compatible vehicle may cause lean driveability concerns such as hesitation, sag and/or possible stalling.
      • Fuel trim DTC P0171 and/or P0174 may set.
      • Misfire DTC P0300 may set.
      • A Traction Control, Stability System or ABS lamp may illuminate, or a message may display in the DIC (if equipped).
      • Harsh and/or firm transmission shifts may occur because the transmission defaults to maximum line pressure.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Alcohol content is checked using Special Tool J-44175-A Fuel Composition Tester or CH-44175-A Fuel Composition Tester.
      2. General Motors started putting yellow gas caps on E85 Flex Fuel Vehicles (FFVs) as of Model Year 2006.

    3. 3Correction

      Repair

      • If the ethanol content exceeds the Owner Manual maximum of 10% or 15%, drain the fuel and refill the vehicle with gasoline, preferably a Top Tier brand.

      Caution

      • All Model Year 2011 and older non-FFV gasoline vehicles are designed to run on fuel containing no more than 10% ethanol.
      • Diesel engines are not E85 compatible.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The list of compatible flexible-fuel vehicles includes 2002–2005 fullsize pickups and utilities with 5.3L, RPO L59.
    • Applies to：The list of compatible flexible-fuel vehicles includes 2006 Sierra, Yukon and Yukon XL with 5.3L, RPO L59.
    • Caution：All Model Year 2011 and older non-FFV gasoline vehicles are designed to run on fuel containing no more than 10% ethanol.
    • Caution：Diesel engines are not E85 compatible.
    • Condition：Using this fuel in a non-compatible vehicle may cause lean driveability concerns such as hesitation, sag and/or possible stalling.
    • Condition：Fuel trim DTC P0171 and/or P0174 may set.
    • Condition：Misfire DTC P0300 may set.
    • Condition：A Traction Control, Stability System or ABS lamp may illuminate, or a message may display in the DIC (if equipped).
    • Condition：Harsh and/or firm transmission shifts may occur because the transmission defaults to maximum line pressure.
    • Confirm：Alcohol content is checked using Special Tool J-44175-A Fuel Composition Tester or CH-44175-A Fuel Composition Tester.
    • Repair：If the ethanol content exceeds the Owner Manual maximum of 10% or 15%, drain the fuel and refill the vehicle with gasoline, preferably a Top Tier brand.
    • Confirm：General Motors started putting yellow gas caps on E85 Flex Fuel Vehicles (FFVs) as of Model Year 2006.

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

    Remedy
    This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.

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