Technical Service Bulletin 13420 — 2012 GMC SIERRA DENALI
FUEL SYSTEM, GASOLINE
Bulletin Details
| TSB ID | 13420 |
| Manufacturer | |
| Vehicle | 2012 GMC SIERRA DENALI |
| Component | FUEL SYSTEM, GASOLINE |
| Communication Date |
Bulletin Summary
PSR - Fuel Tr ansfer Pump Malfunction - Equipped with 6.6L Diesel Engine (LML/LGH) and Dual Fuel Tanks (N2N)
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.