2004 Silverado door lock issue

[Joe h]

The door locks on my 2004 Silverado will intermittently cycle from lock to unlock rapidly.  Also I get a message of driver door ajar and the dome light stays on plus my stereo time delay isn’t working. Before I start replacing components hoping somebody out there might be able to help me out. Thanks

[Formulabruce]

BCM Ground. You will find this on the DS Cab mount , which sticks off the truck frame. The ground wires are on the rear side of the metal cab mount. Clean it all up, soak the wires in evapo-rust if needed, clean cab mount area and put ground back on, then coat it with waterproof ( marine) grease, or some fluid film.

BCM= Body Control Module.