# Service bulletin 00141

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 616387
- Published by NHTSA: 2001\-02\-23
- Manufacturer's number: 00141
- Manufacturer's date: 2000\-10\-17
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's 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

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- 1999 to 2000 CHEVROLET W3500
- 1999 to 2000 CHEVROLET W4500
- 1999 to 2000 CHEVROLET W5500
- 1999 to 2000 GMC W3500
- 1999 to 2000 GMC W4500
- 1999 to 2000 GMC W5500

JSON: [/v1/bulletins/616387](/v1/bulletins/616387)

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