Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1913 (POWER DOOR LOCK SYSTEM AND RELEASE SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B2494 (POWER LIFTGATE)COMPONENT TESTING
2006 Chevrolet Suburban C2500, 6.0 U
Component Testing
2006 Chevrolet Suburban C2500, 6.0 USECTION Component Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Liftgate Handle Switch
- Ignition OFF, disconnect the harness connector at the liftgate handle switch.
- 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.
- 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
- Ignition OFF, disconnect the harness connector at the liftgate close switch.
- 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.
- 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.