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Home >> Buick >> 2012 >> Verano >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls/Fuel - 2.4L - Repair Instructions >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
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Removal Procedure

  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. Fig 1: ECM Wiring Harness Plugs
    GM2595023Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

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

  3. Disconnect the ECM wiring harness plugs (1) from the ECM.
    4. Fig 2: ECM, Bracket & Retainer Clip
    GM2595025Courtesy of GENERAL MOTORS COMPANY
  4. 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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