Chevrolet Equinox Service Manual: K20 Engine Control Module: Programming and Setup Engine Control Engine Control Module

Special Tools

EL-49642 SPS Programming Support Tool

For equivalent regional tools, refer toSpecial Tools.

Note:

DO NOT program a control module unless directed to by a service procedure or a servicebulletin. If the control module is not properly configured with the correct calibrationsoftware, the control module will not control all of the vehicle features properly.Ensure the programming tool is equipped with the latest software and is securely connectedto the data link connector. If there is an interruption during programming, programmingfailure or control module damage may occur.Stable battery voltage is critical during programming. Any fluctuation, spiking, overvoltage or loss of voltage will interrupt programming. When required install theEL-49642 SPS Programming Support Tool to maintain system voltage. If not available, connect a fully charged 12-V jumperor booster pack disconnected from the AC voltage supply. DO NOT connecta battery charger.Turn OFF or disable systems that may put a load on the vehicles battery such as; interiorlights, exterior lights (including daytime running lights), HVAC, radio, etc.During the programming procedure, follow the SPS prompts for the correct ignitionswitch position.Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance(I/M) system status indicators to NO.Note the engine oil life remaining percentage.Replace and Program Control Module

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

Install EL-49642 SPS programming support tool.Access the Service Programming System-(SPS) and follow the on-screen instructions.Before removing the old control module, perform the SPS function Prepare Control Modulefor Removal, if available.

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

Replace the ECM.Perform the SPS function K20 Engine Control Module - Programming and follow the on-screeninstructions.Clear the DTCs after completing the Programming procedure.Perform the SPS function Immobilizer Learn and follow the on-screen instructions.Refer toImmobilizer System Component Programming.Perform the SPS function K20 Engine Control Module - Configuration & Setup and followthe on-screen instructions.Clear DTCs after completing the Configuration & Setup procedure.Reprogram Control Module

To reprogram an existing K20 Engine Control Module, perform the following procedure:

Install EL-49642 SPS programming support tool.Access the Service Programming System-(SPS) and follow the on-screen instructions.Clear DTCs after completing the Programming procedure.Perform the SPS Function Immobilizer Learn and follow the on-screen instructions.Refer toImmobilizer System Component Programming.Perform the SPS function Engine Control Module - Configuration & Setup and followthe on-screen instructions, if available.Clear DTCs after completing the Configuration & Setup procedure.Unsuccessful Programming Recovery

In the event of an interrupted or unsuccessful programming event, perform the following:

Ignition ON. Ensure the control module, DLC, and programming tool connections aresecure and the SPS software is up to date.Verify the control module can be reprogrammed.If the control module cannot be reprogrammedIgnition OFF for one minute, ignition ON.Verify the control module can be reprogrammed.If the control module cannot be reprogrammed, replace the K20 Engine Control Module.If the control module can be reprogrammedAll OK.Repair Instructions

Perform theDiagnostic Repair Verificationafter completing the repair.

Control Module Referencesfor ECM replacement, programming and setup.