Technical Service Bulletin 9802676121B — 1991 GMC C6
ENGINE AND ENGINE COOLING:ENGINE
Bulletin Details
| TSB ID | 9802676121B |
| Manufacturer | |
| Vehicle | 1991 GMC C6 |
| Component | ENGINE AND ENGINE COOLING:ENGINE |
| Communication Date |
Bulletin Summary
COMMENTS ON ENGINE EXHAUST NOISE WHICH IS NORMALLY LOUDEST DURING COLD ENGINE OPERATION. *YC
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.