Power Sunroof Operation

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The sunroof control module has two power circuits; the Sunroof 20 A fuse and the RAP supply voltage.

The Sunroof 20 A fuse is hot at all times suppling battery positive voltage for the operation of the sunroof motor control circuits. The RAP supply voltage is for the sunroof control module logic circuitry and is controlled from, or by the BCM, depending on the wiring configuration. The power sunroof will operate with the ignition switch turned to Accessory or RUN suppling RAP supply voltage. Once the ignition switch is turned to OFF the sunroof will continue to operate until any door is open or when the Retained Accessory Power (RAP) has timed out. For a description and operation of the RAP operation, refer to RETAINED ACCESSORY POWER SYSTEM in Retained Accessory Power.

Use the rocker type sunroof switch to command the sunroof to:

Express Open
Close
Vent

Pressing the sunroof switch rearward, the sunroof glass will slide from:

Vent position to the closed position.
Closed position to the open position.

Pressing the sunroof switch forward, the sunroof glass will slide from:

Open position to the closed position.
Closed position to the vent position.