Replace and Program Control Module

To program a replacement K20 Engine Control Module (ECM), perform the following procedure:

1. Capture a GDS2 Report of the following scan tool parameters
   • Air Cleaner Life Remaining
   • Engine Oil Life Remaining
   • Fuel Filter Life Remaining
   • Fuel injector flow identifiers
2. Access the Service Programming System (SPS) and follow the on-screen instructions.
3. Before removing the old control module, perform the SPS function Prepare Control Module for Removal, if available.
   NOTE:

   The Prepare Control Module for Removal function can only be performed when communication with the old control module is still possible.

4. Replace the ECM.
5. 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.
   • K20 Engine Control Module and follow on-screen instructions.
6. Clear the DTCs after completing the Programming procedure.
7. If equipped, perform the SPS function Immobilizer Learn and follow the on-screen instructions. Refer to Immobilizer System Component Programming .
8. Perform the following SPS function:
   1. Setup
      NOTE:

      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.
   2. Configuration - If applicable
NOTE:

Resetting of the engine air filter life using the Engine Air Filter Monitor Setup function in the scan tool may be required if it was not transferred during the prepare control module for removal process. Refer to: GM Air Filter Life System Resetting

9. If equipped, perform the Fuel Pressure Regulator Learn via GDS2, Engine Control Module, Configuration/Reset Functions, Learn Functions.
10. Clear DTCs.