Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2016 Cadillac ELRFACTORY OEM SERVICE PROCEDURE

Communication Interface Module Replacement

Fig 1: Communication Interface Module

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

Preliminary Procedure
Remove the instrument panel lower trim panel insulator - left side. Refer to Instrument Panel Lower Trim Panel Insulator Replacement - Left Side .

Communication Interface Module Bracket Bolt

CAUTION:

Refer to Fastener Caution .

Communication Interface Module

Procedure

Open the bottom of the hinged bracket and slide the module downward.
Disconnect the electrical connections.
Release the tabs retaining the module to the bracket.
If replacing the communication interface module be sure to transfer wireless communication interface antenna, if equipped.
For programming and set up procedures, refer to Control Module References .

Chapter Navigation

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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.