A/T - Erratic, Harsh or Delayed Upshifts, No DTCs Set: Overview

Group: 01

Number: 98-05

Date: Apr. 21, 1998

Subject:
Automatic Transmission Shifting, Erratic, Harsh or Delayed Upshifts

Model(s):
4 Speed Auto. Trans. with Digimat 2.1 TCM 1995 -> see below

Supersedes TB. Group 01 number 97-01 dated Jan. 8, 1997

Condition

Transmission shifting is erratic, harsh or holds shifts too long (delayed upshifts) with no Diagnostic Trouble Codes (DTC) stored in DTC memory.

Condition is normally caused by improper throttle angle setting.

Only occurs up to EPROM level 4066.

When procedure applies to vehicles within the New Vehicle Limited Warranty, use the following:

Part Identifier: 3730
Labor Operation: 3730510 5OTU