Replace and Program ECU or Reprogram ECU

2019 Buick Envision BaseSECTION Replace and Program ECU or Reprogram ECU
NOTE:

When programming the B218R Side Object Sensor Module - Right, it is also necessary to program the B218L Side Object Sensor Module - Left to ensure software compatibility between the two modules.

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

  1. Access the Service Programming System (SPS) and follow the on-screen instructions.
  2. On the SPS Supported Controllers screen, select B218R Side Object Sensor Module - Right.
  3. On the SPS Select Function / Sequence screen, select Programming
  4. On the SPS Supported Controllers screen, select B218L Side Object Sensor Module - Left.
  5. On the SPS Select Function / Sequence screen, select Programming
  6. At the end of programming, choose the "Clear DTCs" function on the SPS screen.
RENDER: 1.0x

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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.