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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 876 (Wiring Systems And Power Management - Introduction) >> Description and Operation >> Retained Accessory Power (RAP) Description & Operation >> Relay Control of Retained Accessory Power (RAP)

Relay Control of Retained Accessory Power (RAP)

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) keeps the retained accessory power (RAP) relay energized during all power modes, except Off-Awake and Crank. The relay is also energized for approximately 10 minutes after shutting the ignition OFF and removing the key, providing no door is opened. The BCM will de-energize the RAP relay a the same time as the serial data message is sent to end RAP.

The devices powered by the accessory relay during the RAP power mode are the sunroof, power window switches and BTSI/Park Lock.

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