Door Lock Verification
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 door lock button is depressed, all doors will lock, and also the remote control door lock receiver will provide a ground signal through CKT 28 (BLK) to the horn relay which will sound the horn. See WIRING DIAGRAMS . This feature can be turned ON or OFF when programming the remote control door lock receiver. See TRANSMITTER under PROGRAMMING.