Transmission Control Module Programming and Setup. GMC Truck GMC Sierra Denali 2005

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2005 🢒 GMC Sierra Denali 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Transmission Control Module Programming and Setup

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

If the TCM is replaced, TCM Reprogramming must be performed. Refer to Service Programming System (SPS).

If the TCM is reprogrammed, TCM Reprogramming must be performed. Refer to Service Programming System (SPS).

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.