EngineModel years 1999–2013Manufacturer
Slight roughness at idle with no DTCs (possible characteristic)
1999-2013 GMC Savana, Sierra, Yukon with a V-8 gas engine (among many listed models)
FaultCrate・Slight roughness at idle with no DTCs (possible characteristic)
Customers may complain of a slight rough idle with no DTCs or other engine performance concerns, and comparison vehicles may show the same.
An occasional misfire may register on the Tech 2 at idle with no DTCs stored.
What to do
- Compare with a like vehicle; if worse, complete SI diagnosis and repair as necessary.
What is needed
- Parts and materials
- Not stated
- Labor time
- Not stated
- Special tools
- Not stated
- Scan tool
- Not stated
Only what the technical documents state. "Not stated" does not mean not needed.
If left
- If the concern is considered an idle characteristic, no repairs should be attempted.
Applies to
- The bulletin covers 1999-2013 GMC Savana, Sierra and Yukon.
See the evidence (1 documents, 5 passages)
| Document | Publisher | Date |
|---|---|---|
| [1]PIP4404F: Slight Roughness at Idle with No DTCs - Possible Characteristic ↗ | ManufacturerGeneral Motors (published by NHTSA) | 2015-10-09 |
Applies toThe bulletin covers 1999-2013 GMC Savana, Sierra and Yukon.
1999-2013 GMC Savana, Sierra, Yukon— [1] Models
First signsCustomers may complain of a slight rough idle with no DTCs or other engine performance concerns, and comparison vehicles may show the same.
Some customers may complain of a slight rough idle with no DTCs or additional engine performance concerns and comparison vehicles may exhibit the same concern.— [1] Condition
First signsAn occasional misfire may register on the Tech 2 at idle with no DTCs stored.
an occasional misfire may also register on the Tech 2 when the engine is idling but no DTCs will be stored.— [1] Condition
How to confirmCompare with a like vehicle; if worse, complete SI diagnosis and repair as necessary.
Compare the concern to a like vehicle. If the concern is worse than a like vehicle, complete SI diagnosis and repair as necessary— [1] Recommendation
What it does not lead toIf the concern is considered an idle characteristic, no repairs should be attempted.
this should be considered an idle characteristic of the vehicle and no repairs should be attempted.— [1] Recommendation
Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.
List the records (1 that can be opened)
Records whose recall number, document number or text matches. Each line says why it matched.
- Rough Idle Preliminary InformationManufacturer communication 2017-08-15・document number matches