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HOMESERVICE MANUALSCHEVROLET2018TRAVERSE LS, 4WDREPAIR AND DIAGNOSISELECTRICALMOTORS, SWITCHES, RELAYSWIRING SYSTEMS AND POWER MANAGEMENT - DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC INFORMATION AND PROCEDURESDTC B305ECIRCUIT/SYSTEM TESTING
2018 Chevrolet Traverse LS, 4WD

Circuit/System Testing

2018 Chevrolet Traverse LS, 4WDSECTION Circuit/System Testing
  1. Ignition OFF/Vehicle OFF, disconnect the harness connector at the K84 Keyless Entry Control Module.
  2. Momentarily Install a 3 A fused jumper wire between the control circuit terminal 7 X1 and B+.
  3. Verify the test lamp turns ON and OFF at the ignition circuits listed below and ground when connecting and disconnecting the jumper wire.
    • X51A Fuse Block - Instrument Panel - Fuse F20DA
    • X51A Fuse Block - Instrument Panel - Fuse F24DA
    • X51A Fuse Block - Instrument Panel - Fuse F42DA
    • X51A Fuse Block - Instrument Panel - Circuit breaker F42DA
    • If the test lamp is always OFF 
    1. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • Go to next step: If infinite resistance.
    2. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the X51A Fuse Block - Instrument Panel.
    • If the test lamp is always ON 
    1. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
    • Go to next step: If the test lamp turns ON and OFF 
  4. Replace the K84 Keyless Entry Control Module.
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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.