2016 Cadillac XTS BaseFACTORY OEM SERVICE PROCEDURE

Communication Interface Module Replacement

Fig 1: Communication Interface Module
GM2753800Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Remove the rear window panel trim. Refer to Rear Window Panel Trim Replacement (Without DB3)Rear Window Panel Trim Replacement (With DB3) .
1 Communication Interface Module

Procedure

  1. Unsnap the module from the bracket.
  2. Disconnect the electrical connector.
  3. Reprogram the communication interface module after installation. Refer to Control Module References .
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.