GM Service Manual Online
For 1990-2009 cars only

Serial Data Controled Retained Accessory Power, RAP

Retained accessory power, RAP is a vehicle power mode that permits the operation of selected customer convenience items after the ignition switch is turned OFF. These selected items will remain in operation until a passenger compartment door is opened or until the RAP function timer reaches its shut-off limit.

The Audio system on this vehicle is the only device that is controled by RAP.