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HOMESERVICE MANUALSCHEVROLET2018TAHOE FL, 4WD, GASREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADASDRIVER ASSISTANCE SYSTEMSDIAGNOSTIC INFORMATION AND PROCEDURESADAPTIVE CRUISE CONTROL MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2018 Chevrolet Tahoe FL, 4WD, Gas

Circuit/System Verification

2018 Chevrolet Tahoe FL, 4WD, GasSECTION Circuit/System Verification
  1. Ignition ON.
  2. Verify there are no other DTCs set and that there are no communication DTCs set in the vehicle.
    • Go to next step: If no DTC's are set 
  3. Verify the Active Safety Control Module scan tool parameter Adaptive Cruise Control Inhibit History Data 1-6 and Adaptive Cruise Control Disengage History Data 1-6 indicate no current malfunction. Refer to K124 Active Safety Control Module: Scan Tool Information
    • If not the specified state 

      Diagnose the system that sets the malfunction.

    • Go to next step: If the specified state 
  4. Verify the scan tool parameter: B233B Radar Sensor Module - Long Range - Long Range Radar Sensor Module Misaligned - Angled Down = No
    • If the parameter does not display the following: Long Range Radar Sensor Module Misaligned - Angled Down = No 

      Align the B233B Radar Sensor Module - Long Range and perform the Radar Sensor Module - Long Range Learn 

    • Go to next step: If the parameter displays the following: Long Range Radar Sensor Module Misaligned - Angled Down = No 
  5. Verify the scan tool parameter: B233B Radar Sensor Module - Long Range - Long Range Radar Sensor Module Misaligned - Angled Left = No
    • If the parameter does not display the following: Long Range Radar Sensor Module Misaligned - Angled Left = No 

      Align the B233B Radar Sensor Module - Long Range and perform the Radar Sensor Module - Long Range Learn 

    • Go to next step: If the parameter displays the following: Long Range Radar Sensor Module Misaligned - Angled Left = No 
  6. Verify the scan tool parameter: B233B Radar Sensor Module - Long Range - Long Range Radar Sensor Module Misaligned - Angled Right = No
    • If the parameter does not display the following: Long Range Radar Sensor Module Misaligned - Angled Right = No 

      Align the B233B Radar Sensor Module - Long Range and perform the Radar Sensor Module - Long Range Learn 

    • Go to next step: If the parameter displays the following: Long Range Radar Sensor Module Misaligned - Angled Right = No 
  7. Verify the scan tool parameter: B233B Radar Sensor Module - Long Range - Long Range Radar Sensor Module Misaligned - Angled Up = No
    • If the parameter does not display the following: Long Range Radar Sensor Module Misaligned - Angled Up = No 

      Align the B233B Radar Sensor Module - Long Range and perform the Radar Sensor Module - Long Range Learn 

    • Go to next step: If the parameter displays the following: Long Range Radar Sensor Module Misaligned - Angled Up = No 
  8. Verify the scan tool parameter: K109 Frontview Camera Calibration Status = Calibrated. Refer to K109 Frontview Camera Module: Scan Tool Information
    • Go to next step: If the specified state 
  9. All OK.
RENDER: 1.0x

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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.