Technical Service Bulletin 121202 — 2003 GMC GMC TRUCK
POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES
Bulletin Details
| TSB ID | 121202 |
| Manufacturer | |
| Vehicle | 2003 GMC GMC TRUCK |
| Component | POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES |
| Communication Date |
Bulletin Summary
NEW TRANSMISSION OIL COOLING SYSTEM FLUSHING TOOL. 1998 AND 2003 CHEVROLET AND GMC MEDIUM DUTY TRUCKS EQUIPPED WITH 4L80E AUTOMATIC TRANSMISSIONS. *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.
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