I noticed my vans doors were locked yesterday when I know I left them unlocked, The same thing today. Now I can't lock or unlock with the lock switch in the van or with the keyless, I checked the fuses and they're fine. the lock on the back door keeps locking and unlocking it self all the time. Any ideas,,, Thanks in advance.
Steve

 

If your B1500 is a conversion van, then the lock controler is located under the "DOG HOUSE" cover over the engine. Once the "DOG HOUSE" cover is taken off, look in the cavity area on the driver's side. Mainly, these devices were made by TRW Automotive. Check the wiring and connections.

Sometimes, a loose or bare wire could cause issues with these locking systems. Once they touch the body ground, they do strange things.

Stev