WARNING: This page is about a different car, the 2011 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.

To program a replacement or an existing ECU, perform the following procedure:

Install EL-49642 . See Special Tools .
Access the Service Programming System (SPS) and follow the on-screen instructions.

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

Before removing the old instrument cluster, perform the SPS function Prepare Control Module for Removal and follow the on-screen instructions.
Replace the instrument cluster.
On the SPS Supported Controllers screen, select Instrument Cluster - Programming and follow the on-screen instructions.
On the SPS Supported Controllers screen, select Instrument Cluster - Setup and follow the on-screen instructions.
On the SPS Supported Controllers screen, select Instrument Cluster - Configuration and follow the on-screen instructions.
At the end of programming, choose the "Clear All DTCs" function on the SPS screen.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Replace and Program ECU or Reprogram ECU

Use the Manual With the Right Hardware

When to See a Mechanic

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