Trouble Shooting
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 GMC Yukon XL, 2000 GMC Yukon, 2000 GMC Sierra, 2000 Chevrolet Tahoe, and 2000 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
Check TBC fuse (10-amp) in engine wiring harness junction block. Check MR/LOCK fuse (3-amp), DR LOCK fuse (20-amp), LOCK fuse (15-amp) and UNLOCK fuse (15-amp) in fuse block. Ensure all electrical connectors, circuits and grounds are good. Try second transmitter if available. If second transmitter works, replace battery in first transmitter. If still inoperable, replace first transmitter. Ensure power door locks system is operational. See appropriate POWER DOOR LOCKS article.