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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1677 (Sunroof System) >> Description and Operation >> Sunroof Description and Operation >> Express Open

Express Open

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The express open will only operate with the sunroof in the fully closed or partially open position. To express open the sunroof glass, momentarily press the sunroof switch to the second rearward position once. This will apply the sunroof switch low reference circuit to both the sunroof switch express signal circuit and to the sunroof switch open signal circuit (12 V references) inputs, pulling them to 0 V momentarily. The momentary transition inputs to the sunroof control module indicates an express open request. Once the express open has been initiated, the sunroof control module will drive the motor in the open direction, slightly lowering the rear edge of the sunroof glass, then sliding open with the sunshade. The sunroof glass will continue to express open until: