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HOMESERVICE MANUALSCHEVROLET2025TAHOE COMMERCIAL, 4WDREPAIR AND DIAGNOSISSUSPENSIONSUSPENSION CONTROL SYSTEMSSUSPENSION CONTROLS SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C1175CIRCUIT/SYSTEM TESTING
2025 Chevrolet Tahoe Commercial, 4WD

Circuit/System Testing

2025 Chevrolet Tahoe Commercial, 4WDSECTION Circuit/System Testing
  1. Ignition OFF and all vehicle systems OFF.
  2. Inspect the K5 Automatic Level Control Module and Air Suspension Controller for damage.
    • If damage is found 

      Replace the damaged component

    • Go to next step: If damage is not found 
  3. Verify the K5 Automatic Level Control Module software is up to date.
    • If the software is not up to date 
    1. Perform the programming and setup for the K5 Automatic Level Control Module.
    2. Verify DTC C1175 does not reset.
      • If DTC sets

        Replace the K5 Automatic Level Control Module and the Air Suspension Controller.

      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If the software is up to date 
  4. Replace the K5 Automatic Level Control Module and the Air Suspension Controller.
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.