Technical Service Bulletin 00141 — 1999 GMC W5500
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Bulletin Details
| TSB ID | 00141 |
| Manufacturer | |
| Vehicle | 1999 GMC W5500 |
| Component | POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) |
| Communication Date |
Bulletin Summary
SOME VEHICLES MAY EXHIBIT A CONDITION WHERE THE TRANSMISSION CONTROL MODULE (TCM) MAY EXHIBIT A LOGIC ERROR. THIS TCM LOGIC ERROR CAN, UNDER CERTAIN OPERATING CONDITIONS, PREVENT TRANSMISSION TORQUE CONVERTER LOCKUP AND LESSEN THE EXHAUST BRAKE EFFECTIVENESS, HOWEVER, THE EXHAUST BRAKE EFFECTIVENESS IS STILL WITHIN THE REQUIREMENTS OF FMVSS 102 FOR TRANSMISSION BRAKING. IF THE VEHICLE IS DRIVEN AT SUSTAINED HIGHWAY SPEEDS FOR PROLONGED PERIODS OF TIME WITHOUT THE TORQUE CONVERTER IN THE LOCK UP MODE, THE TRANSMISSION FLUID SUMP TEMPERATURES MAY RISE RESULTING IN DAMAGE TO THE FRONT PUMP SEAL. *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.