The same thing has happend to my 1995 Suburban. Ive googled the problem only to find that it may be the fuse, or the switch itself is bad. Hope this helps.
Check your fuses.
Key?
The Chevy Silverado LT package includes numerous options that are standard. It comes with power locks, keyless entry, front lumbar support, heated mirrors, and an external temperature display.
What do I need to do to take the door panel off a 1996 Chevy Silverado? Pickup has power windows and door locks I need to fix inside door handle
Try cycling your electric door locks with the key removed from the ignition.
Should have access after removing inner door panel
They are designations of trim levels. The Cheyenne is usually optioned only slightly better than a work truck with manual windows, locks and rubber floors but they are still options, The Silverado is the higher trim model with a higher base price and more standard features like power windows, mirrors, locks and carpet with bucket seats and alloy wheels. .
The relay switch for the locks on a 99 Chevy Suburban is located under the driver-side dashboard.
Look on the inside of your drivers side door, there should be a latch which you can disable. Lis@
check the wirring that runs threw the door probaly got a broken wire
Call a locks-smith.
no