2012 Buick Regal BaseFACTORY OEM SERVICE PROCEDURE

Communication Interface Module Replacement

WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Communication Interface Module
GM2771821Courtesy of GENERAL MOTORS COMPANY
Communication Interface Module Replacement

Callout Component Name

Preliminary Procedure

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the instrument panel lower trim panel replacement. Refer to Instrument Panel Lower Trim Panel Replacement - Left Side .
  3. Remove the instrument panel lower extension side trim panel. Refer to Instrument Panel Lower Extension Side Trim Panel Replacement .
  4. Remove the instrument panel lower center trim panel. Refer to Instrument Panel Lower Center Trim Panel Replacement .
1 Communication Interface Module

Procedure

  1. Disconnect the electrical connections.
  2. For programming and set up information. Refer to Control Module References .
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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.