Data Link Input
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.
The remote control door lock receiver is connected to the Data Link Connector (DLC) through CKT 1455 (BLK/WHT). See WIRING DIAGRAMS . When this circuit is grounded it allows the remote control door lock receiver to be programmed. See TRANSMITTER under PROGRAMMING.