Reprogram Control Module
WARNING: This page is about a different car, the 2020 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
To reprogram an existing K20 Engine Control Module, perform the following procedure:
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- Perform one of the following SPS Programming functions:
- K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
- K20 Engine Control Module and follow on-screen instructions.
NOTE:If both controller options below are listed, select K20/K71 Engine and Transmission Control Modules.
- Clear DTCs after completing the Programming procedure.
- Perform the following SPS function:
- SetupNOTE:
If both controller options below are listed, select K20 Engine Control Module.
- K20/K71 Engine and Transmission Control Modules and follow the on-screen instructions.
- K20 Engine Control Module and follow on-screen instructions.
- Configuration - If applicable
- Setup
- If equipped, perform the Fuel Pressure Regulator Learn via GDS2, Engine Control Module, Configuration/Reset Functions, Learn Functions.
- Clear DTCs.
NOTE:
If vehicle fails to start during Configuration and Setup, perform the SPS Function Immobilizer Learn and follow the on-screen instructions.