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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSFIXED & MOVEABLE WINDOW SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESLIFTGATE WINDOW RELEASE INOPERATIVECOMPONENT TESTING
2009 Chevrolet Tahoe Base, 4.8 C

Component Testing

2009 Chevrolet Tahoe Base, 4.8 CSECTION Component Testing

Liftglass Latch Assembly

  1. Ignition OFF, disconnect the harness connector at the rear liftglass latch assembly.
  2. Install a 20A fused jumper wire between the control terminal 1 and 12 volts. Install a jumper wire between the ground terminal 2 and ground. Verify the liftglass actuator activates.
    • If the actuator does not perform as specified, replace the liftglass latch assembly.

Liftglass Release Switch

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