Bravada 4WD V8-5.3L VIN P (2004)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Harsh A/T Shifts From PARK to DRIVE
Bulletin No.: 04-07-30-022
Date: April 29, 2004
TECHNICAL
Subject:
Harsh Garage Shift from PARK to DRIVE or from PARK to REVERSE with Transmission Fluid at Cold Ambient Temperatures (Reprogram PCM)
Models:
2004 Buick Rainier
2004 Chevrolet TrailBlazer, TrailBlazer EXT
2004 GMC Envoy, Envoy XL
2004 Oldsmobile Bravada
with 4L60-E Automatic Transmission (RPO M30)
Built Prior to the VIN Breakpoints shown.
Condition
Some customers may comment on a harsh garage shift, especially when the transmission fluid is at a low ambient temperature.
Correction
A revised calibration to address this issue is now available.
Reprogram the PCM using the new service calibration, which was available from Techline starting February 23, 2004 on TIS2000 version 2.5 or later.
This calibration is an electronic calibration and is not available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table shown.
