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HOMESERVICE MANUALSGMC2011YUKON BASE, 5.3 0, RWDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSPOWER DOOR LOCK SYSTEM AND RELEASE SYSTEMSDIAGNOSTIC INFORMATION AND PROCEDURESPOWER LIFTGATE MALFUNCTION (LIFTGATE HANDLE SWITCH MALFUNCTION)COMPONENT TESTING
2011 GMC Yukon Base, 5.3 0, RWD

Component Testing

2011 GMC Yukon Base, 5.3 0, RWDSECTION Component Testing

Liftgate Handle Switch

  1. Ignition OFF, disconnect the harness connector at the liftgate handle switch.
  2. Test for infinite resistance between the signal terminal A and the low reference terminal B with the switch in the open position.
    • If not the specified value, replace the liftgate handle switch.
  3. Test for less than 2 Ξ© between the signal terminal A and the low reference terminal B with the switch in the closed position.
    • If greater than the specified range, replace the liftgate handle switch.

Liftgate Close Switch

  1. Ignition OFF, disconnect the harness connector at the liftgate close switch.
  2. Test for infinite resistance between the signal terminal D and the low reference terminal A with the switch in the open position.
    • If not the specified value, replace the liftgate close switch.
  3. Test for less than 2 Ξ© between the signal terminal D and the low reference terminal A with the switch in the closed position.
    • If greater than the specified range, replace the liftgate close switch.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.