GMC Yukon 2000–2006
Common on this vehicle:Warning lightMisfire or rough idleLoss of engine power, no accelerationStalls or shuts offCorrosion or rustLeakNoise
Record by record
4 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.
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 (3)
ENGINE AND ENGINE COOLING2
Manufacturer communication2004–2005 GMC YUKON ・ 2005-11-30
LM7, L59 or L33 Engine Cold Start Issues and O2 Sensor Service
1Fault
2Finding the cause
3Correction
Read the sentences of the record
- Remedy
- LM7, L59 OR L33 ENGINES WITH COLD START ROUGH OR INCORRECT IDLE, MISFIRE, MALFUNCTION INDICATOR LAMP (MIL) OR FLASHING REQUIRING O2 SENSOR REPLACEMENT. *TT
Manufacturer communication2002–2004 GMC YUKON ・ 2005-11-03
Flexible Fuel (RPO L59) Rough Idle and Misfire Diagnostic
1Fault
2Finding the cause
Not stated
3Correction
Read the sentences of the record
- Remedy
- FLEXIBLE FUEL (RPO L59) ROUGH IDLE, MISFIRE, MALFUNCTION INDICATOR LAMP DIAGNOSTIC TROUBLE CODE P0300. *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.
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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