2024 GMC Canyon AT4XFACTORY OEM SERVICE PROCEDURE

Circuit/System Testing

Cruise Control Set/Coast/Resume/Accelerate Switch Signal

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the component: K9 Body Control Module
  3. Disconnect the component: Cruise Control Switch Assembly
  4. Ignition - On / Vehicle - In Service Mode
  5. Test for less than 1 V between the test points:
    • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
    • Cruise Control Set/Coast/Resume/Accelerate Switch Signal circuit at the switch harness connector and ground.
    • If 1 V or greater - Repair the short to voltage on the circuit.
    • Go to next step: If less than 1 V
  6. Ignition/Vehicle - Off
  7. Test for infinite resistance between the test points:
    • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
    • Cruise Control Set/Coast/Resume/Accelerate Switch Signal circuit at the switch harness connector and ground.
    • If less than infinite resistance - Repair the short to ground on the circuit.
    • Go to next step: If infinite resistance
  8. Test for less than 2 ohms between the test points:
    • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and the other end of the circuit.
    • Cruise Control Set/Coast/Resume/Accelerate Switch Signal circuit at the switch harness connector and the other end of the circuit.
    • If 2 ohms or greater - Repair the open/high resistance in the circuit.
    • Go to next step: If less than 2 ohms
  9. Test or replace the component: Cruise Control Switch Assembly
  10. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.
    • If the DTC sets 

      Replace the component: K9 Body Control Module

    • Go to next step: If the DTC is not set 
  11. All OK.

Distance Sensing Cruise Control Gap Up/Down Switch Signal

  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the component: K9 Body Control Module
  3. Disconnect the component: Cruise Control Switch Assembly
  4. Ignition - On / Vehicle - In Service Mode
  5. Test for less than 1 V between the test points:
    • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
    • Distance Sensing Cruise Control Gap Up/Down Switch Signal circuit at the switch harness connector and ground.
    • If 1 V or greater - Repair the short to voltage on the circuit.
    • Go to next step: If less than 1 V
  6. Ignition/Vehicle - Off
  7. Test for infinite resistance between the test points:
    • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and ground.
    • Distance Sensing Cruise Control Gap Up/Down Switch Signal circuit at the switch harness connector and ground.
    • If less than infinite resistance - Repair the short to ground on the circuit.
    • Go to next step: If infinite resistance
  8. Test for less than 2 ohms between the test points:
    • Steering Wheel Resistor Ladder Low Reference circuit at the switch harness connector and the other end of the circuit.
    • Distance Sensing Cruise Control Gap Up/Down Switch Signal circuit at the switch harness connector and the other end of the circuit.
    • If 2 ohms or greater - Repair the open/high resistance in the circuit.
    • Go to next step: If less than 2 ohms
  9. Test or replace the component: Cruise Control Switch Assembly
  10. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.
    • If the DTC sets 

      Replace the component: K9 Body Control Module

    • Go to next step: If the DTC is not set 
  11. All OK.
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.

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