Cargo Door Unlock
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Pickup, 1999 Chevrolet Tahoe, and 1999 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
When the rear unlock button is depressed twice, the remote control door lock receiver sends a voltage signal through CKT 56 (BLK/WHT) to the cargo door lock motor. See WIRING DIAGRAMS . Since CKT 295 (GRY) grounds through the door lock relay to CKT 150 (BLK) to G202, the cargo door lock motor unlocks.