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HOMESERVICE MANUALSGMC2021TERRAIN SLT, 4WDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR, ENTERTAINMENT, AND NAVIGATION SYSTEMREPAIR INSTRUCTIONSHUMAN-MACHINE INTERFACE CONTROL MODULE REPLACEMENT
2021 GMC Terrain SLT, 4WD

Human-Machine Interface Control Module Replacement

2021 GMC Terrain SLT, 4WDSECTION Human-Machine Interface Control Module Replacement
GM4578459Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedures

  1. Remove the front side door sill garnish molding - right side. Front Side Door Sill Garnish Molding Replacement (Equinox) , or Front Side Door Sill Garnish Molding Replacement (Terrain)
  2. Reposition the front floor panel carpet as necessary.
1 Human Machine Interface Control Module

Procedure

  1. Disconnect the electrical connectors.
  2. Release the retaining tab.
  3. Perform the necessary programming and setup procedure: Control Module References
RENDER: 1.0x

NO RELATED

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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.