Programming an Existing or New Control Module

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

To program an existing or new control module, perform the following procedure:

Install the special tool: EL-49642 SPS Programming Support Tool
Ignition - On/Vehicle - In Service Mode
Perform one of the following SPS Programming functions:
NOTE:
If both controller options below are listed, select K20/K71 Engine and Transmission Control Modules.
- K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
- K71 Transmission Control Module and follow on-screen instructions.
1. Select - Programming
2. Select - MCVM Operations - If applicable
3. Ignition/Vehicle - Off - For greater than 2 min
4. Select - Setup - Follow the on-screen instructions.
Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to No.
All OK.