LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2006 >> DTS 4.6 9 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle - 4T80-E - Introduction (2 Of 2) >> Repair Instructions >> Transmission Control Module Programming and Setup
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Transmission Control Module Programming and Setup

  1. The transmission control module (TCM) must be programmed with the proper software/calibrations. Ensure that the following conditions exist in order to prepare for TCM programming:
    • The battery is fully charged
    • The ignition switch is in the RUN position
    • The Techline equipment cable connection at the data link connector (DLC) is secure.
  2. Program the TCM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions
  3. If the TCM fails to program, proceed as follows:
    1. 3.1. Ensure that the TCM connection is OK
    2. 3.2. Inspect the Techline equipment for the latest software version.
    3. 3.3. Attempt to program the TCM. If the TCM still cannot be programmed properly, replace the TCM.
scientia non olet · About LEMON Manuals