2017 Cadillac CTS Base, AWDFACTORY OEM SERVICE PROCEDURE

Human Machine Interface Control Module Replacement

Fig 1: Human Machine Interface Control Module
GM3461709Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Remove the instrument panel lower trim panel insulator - right side. Refer to Instrument Panel Lower Trim Panel Insulator Replacement - Right Side .
1 Human Machine Interface Control Module

Procedure

  1. Disconnect the electrical connections.
  2. Unclip the module from the insulator panel.
  3. Refer to Control Module References for programming and setup information.
Factory Service Tools

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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.