6T70 - Automatic Transmission

Transmission Control Module Programming and Setup (6T70)

The following service procedures require either a programming or a setup event performed for a complete repair.

Transmission Control Module (TCM) Replacement

If the TCM is replaced, TCM Reprogramming must be performed. Refer to Neutral - Engine Running (Neutral - Engine Running).

TCM Reprogramming

If the TCM is reprogrammed, TCM Reprogramming must be performed. Refer to Neutral - Engine Running (Neutral - Engine Running).

Ensure the following conditions exist in order to prepare for TCM programming or reprogramming:

* 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.

Program the TCM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.

If the TCM fails to program, proceed as follows:

* Ensure the TCM connection is good.
* Inspect the Techline equipment for the latest software version.
* Attempt to program the TCM. If the TCM still cannot be programmed properly, replace the TCM.

After successful TCM reprogramming, reset the transmission adapts and perform the Transmission Adaptive Learn Procedure. Refer to Transmission Adaptive Functions (Transmission Adaptive Functions).