A/T - Harsh PARK To DRIVE or REVERSE Shifts
TSB SB04-05-S006Harsh Garage Shift from Park to Drive or from Park to
Reverse with Transmission Fluid at Cold Ambient
Temperatures
Affected Vehicles
2004 Isuzu Ascender (US/UT) models equipped with 4L60-E Automatic Transmission, built prior to the VIN Breakpoints shown.
Service Information
Condition:
Some customers may comment on a harsh garage shift, especially when the transmission fluid is at a low ambient temperature. Normal diagnostics has determined no problem found.
Correction:
A revised calibration has been released to address this issue.
Service Procedure
Connect the Tech2 and use SPS reprogramming to reprogram the Powertrain Control Module (PCM) with ITCS CD # 30 or later.
Warranty Claim Information
Use the labor operation shown.
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