GMC Yukon 2000–2006
Common on this vehicle:Hard start or long crankDoes not startWarning light
Record by record
1 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 (1)
ENGINE1
Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2017-08-15
Engine Misfire and Rough Idle Malfunction Indicator Lamp
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.
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)
- With the engine cold, compression on multiple cylinders may read 0 PSI (= 0 kPa).
- The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.
3Correction
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.
- 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).
- Turn the engine off and let the cleaner soak for 2.5 to 3 hours.
- 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
88861803Cleaner,Fuel Injector & Upper Engine Acdelco 16OzLook up at RockAuto (aftermarket candidates) ↗Search the web ↗
Replaced by: 19355198as stated by GMPartsGiant (checked 2026-10-06) ↗Look up at RockAuto (aftermarket candidates) ↗Search the web ↗
88861804Cleaner,Fuel Injector & Upper Engine Acdelco .473LLook up at RockAuto (aftermarket candidates) ↗Search the web ↗
Discontinued (no successor stated)(replaces 21992873)as stated by GMPartsGiant (checked 2026-10-06) ↗
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.
