To Vent Open
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Opening the sunroof glass, to the vent position, can be done when it is between fully closed and partially vent. To vent open, press and hold the sunroof vent switch rearward. This will apply the sunroof switch low reference circuit to the sunroof switch open vent signal circuit. Holding the sunroof switch in the vent position will cause the sunroof switch open vent signal circuit (12-volt reference) input to be pulled to 0 volts. The constant low input to the sunroof module indicates a vent request. Once the vent request has been initiated, the sunroof motor/module assembly will drive the motor in the closed direction (to vent position) until the sunroof motion is terminated by either:
- The sunroof glass reaches the full vent open position.
- Releasing the sunroof switch.