Circuit/System Testing

2018 Chevrolet Traverse LS, 4WDSECTION Circuit/System Testing
  1. Ignition OFF/Vehicle OFF, disconnect the harness connector at the P16 Instrument Cluster.
  2. Verify that a test lamp does not illuminate between the ignition circuit terminal 8 and ground.
    • If the test lamp illuminates 

      Repair the short to voltage on the ignition circuit.

    • Go to next step: If the test lamp does not illuminate 
  3. Ignition ON/Vehicle in Service Mode.
  4. Verify that a test lamp illuminates between the ignition terminal 8 and ground.
    • If the test lamp does not illuminate and the Ignition fuse is good 
    1. Ignition OFF/Vehicle OFF, remove the test lamp.
    2. Test for less than 2 Ω in the ignition circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, refer to Power Mode Mismatch .
    • If the test lamp does not illuminate and the Ignition fuse is open 
    1. Ignition OFF/Vehicle OFF, remove the test lamp.
    2. Test for infinite resistance between the ignition circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the P16 Instrument Cluster.
    • Go to next step: If the test lamp illuminates 
  5. Replace the P16 Instrument Cluster.
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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.