2021 Chevrolet Bolt EV PremierFACTORY OEM SERVICE PROCEDURE

Programming an Existing Control Module

WARNING: This page is about a different car, the 2020 Chevrolet Bolt EV. However, it is still accessible from the selected car via links, so may be relevant.

To program an existing control module, perform the following procedure:

    CAUTION:

    DO NOT program the K114B Hybrid/EV Powertrain Control Module 2 with the drive motor battery charger cable connected to the vehicle. Charging while programming may result in damage to the High Voltage Battery Disconnect Relays.

  1. Install the special tool: EL-49642 SPS Programming Support Tool
  2. Access the Service Programming System (SPS) and follow the on-screen instructions.
  3. On the SPS Supported Controllers screen, select K114B Hybrid/EV Powertrain Control Module 2 - Programming and follow the on-screen instructions.
  4. At the end of programming, choose the "Clear All DTCs"
  5. Vehicles with DC fast charging, RPO CBT, require the vehicle to be driven at a speed greater than 30 km/h (19 mph) to re-enable DC Charging.
Factory Service Tools

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When to See a Mechanic

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

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.