Technical Service Bulletin 3400 — 2005 GMC TOPKICK
FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS
Bulletin Details
| TSB ID | 3400 |
| Manufacturer | |
| Vehicle | 2005 GMC TOPKICK |
| Component | FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS |
Bulletin Summary
ROUGH IDLE, FUEL KNOCK OR SMOKE WHILE DRIVING, COMBUSTION LEAK TYPE NOISE, OR A MISFIRE. 6.6 LLY INJECTOR KNOCK, HEAVY SMOKE DURING WARM UP CYCLE. *TT
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.