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 MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 109 (SUNROOF SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER SUNROOF INOPERATIVECOMPONENT TESTING
2009 Chevrolet Tahoe Base, 4.8 C
Component Testing
2009 Chevrolet Tahoe Base, 4.8 CSECTION Component Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Sunroof Switch
- Ignition OFF, disconnect the harness connector at the sunroof switch.
- Test for infinite resistance between the switch terminals listed below and the ground circuit terminal 5 with the switch in the neutral position.
- Express open/close terminal 1
- Sunroof close terminal 4
- Sunroof open terminal 6
- Vent close terminal 8
- Vent open terminal 2
- If not the specified value, replace the sunroof switch.
- Test for less than 5 ohms between the switch terminals listed below and the ground circuit terminal 5 with the switch in the appropriate position.
- Express open/close terminal 1
- Sunroof close terminal 4
- Sunroof open terminal 6
- Vent close terminal 8
- Vent open terminal 2
- If greater than the specified value, replace the sunroof 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:
- • 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.