Component Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- 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
- Crew cab only - vent close terminal 8
- Crew cab only - vent open terminal 2
- If not the specified value, replace the sunroof switch.
- Test for less than 5 Ω 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
- Crew cab only - vent close terminal 8
- Crew cab only - vent open terminal 2
- If greater than the specified value, replace the sunroof switch.