2015 Chevrolet VoltFACTORY OEM SERVICE PROCEDURE

Replace and Program ECU or Reprogram ECU

NOTE: This procedure may require a USB flash drive. SPS will indicate if the flash drive is needed.

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

  1. Install EL-49642  SPS programming support tool.
  2. Connect the USB flash drive to the SPS terminal/PC.
  3. Access the Service Programming System (SPS) and follow the on-screen instructions.
  4. On the SPS Supported Controllers screen, select Instrument Cluster - Step 1 Prepare Control Module for Programming and follow the on-screen instructions. If the USB flash drive is needed perform steps 4. 1 and 4. 2. If the USB is not needed continue on to step  5.
    NOTE: SPS will indicate when it is safe to remove the flash drive from the SPS terminal.
    1. Physically remove the cluster while leaving the connector plugged in to access the USB port on the back of the cluster.
    2. Using cable EL-50334-2 from special tool kit EL-50334-50  infotainment adapter kit, connect the USB flash drive to the instrument cluster.
  5. On the SPS Supported Controllers screen, select Instrument Cluster - Step 2 Programming and follow the on-screen instructions.
    NOTE: If the USB flash drive was required, the instrument cluster will automatically copy files from the flash drive. The SPS screen will indicate 100% completion but SPS will not say programming successful yet, the instrument cluster may still be programming. The instrument cluster screen will display a progression indicator while it is copying files from the USB drive. Once all files are programmed, SPS will then indicate programming successful.
  6. On the SPS Supported Controllers screen, select Instrument Cluster - Step 3 Setup and follow the on-screen instructions.
  7. On the SPS Supported Controllers screen, select Instrument Cluster - Step 4 Configuration and follow the on-screen instructions.
  8. At the end of programming, choose the "Clear All DTCs" function on the SPS screen.
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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.

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