Liftgate 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 2X unlock button is depressed twice, the remote control door lock receiver sends a voltage signal through CKT 1576 (BLK) to the liftgate release motor. See WIRING DIAGRAMS . Since CKT 1737 (YEL) grounds through the Park/Neutral Position Switch to CKT 150 (BLK) to G105, the liftgate is released. The vehicle must be in Park or Neutral for the liftgate to release.