GMC Yukon 2000–2006
Common on this vehicle:Warning lightLoss of engine power, no accelerationStalls or shuts offMisfire or rough idleFuel smellLeakSmoke or fire
Record by record
3 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.
Read the records one by one (2)
ENGINE AND ENGINE COOLING1
Manufacturer communication2000–2005 GMC YUKON ・ 2005-05-11
Cold Engine Misfire at Idle with Possible P0171/P0174
1Fault
2Finding the cause
Not stated
3Correction
1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174. *TT
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- Remedy
- 1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174. *TT
FUEL SYSTEM, GASOLINE1
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
1Fault
- Misfire or rough idle
- Loss of engine power, no acceleration
- Stalls or shuts off
- Warning light
- ABS light
- P0171
- P0174
- P0300
- 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.
2Finding the cause
Steps to confirm (in the document’s order)
- Alcohol content is checked using Special Tool J-44175-A Fuel Composition Tester or CH-44175-A Fuel Composition Tester.
- General Motors started putting yellow gas caps on E85 Flex Fuel Vehicles (FFVs) as of Model Year 2006.
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.
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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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