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Removal Procedure

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Prepare the engine control module (ECM) for replacement. Refer to Control Module References .
  2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  3. GM2595023
    CAUTION:

    In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.

    Disconnect the ECM wiring harness plugs (1) from the ECM.

  4. GM2595025

    Remove the ECM bracket (1) along with the ECM (2) from the battery tray.

  5. Unclip the retainer clip (3).
  6. Remove the ECM (2) from the ECM bracket (1).
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