Vent Close
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
The VENT CLOSE mode is initiated by pressing and holding the forward portion of the sunroof vent switch (VENT). This applies a ground from the sunroof switch low reference circuit through the sunroof switch close vent signal circuit to the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until the limit switch contacts are closed. The closing of the limit switch will apply the sunroof limit switch low reference circuit to the sunroof limit switch soft stop signal circuit to the sunroof module, indicating the flush closed position has been reached. The sunshade will need to be manually slid closed.