Relay Control of Retained Accessory Power (RAP)
WARNING: This page is about a different car, the 2005 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) keeps the accessory relay energized during all power modes, except Off-Awake and Crank.
The devices powered by the accessory relay during the retained accessory power (RAP) power mode are the sunroof and windows.