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Fig 1: View Of Communication Interface Module

Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedure

Remove the instrument Panel Accessory Trim Plate. Refer to Instrument Panel Accessory Trim Plate Replacement (Except Cadillac) or Instrument Panel Accessory Trim Plate Replacement (Cadillac) .
Remove the HVAC Control Module. Refer to HVAC Control Module Replacement or HVAC Control Module Replacement .
Remove the radio. Refer to Radio Replacement (Except Cadillac) or Radio Replacement (Cadillac) .

Communication Interface Module
Tip:

Push outward on the two tabs to release the communication interface module from the bracket.
Disconnect the electrical connectors.
Reprogram the communication interface module after replacement. Refer to Control Module References .

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.

Safety Warning

Communication Interface Module Replacement (Cadillac)

Use the Manual With the Right Hardware

When to See a Mechanic

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