My drivers door stopped unlocking a couple days ago with either the fob or the drivers door panel controls (not sure about the passenger door panel...). It locks up normally and the passenger side locks and unlocks normally (two fob presses). The odd part is that I can't locate the controlling fuse. My truck ('03 LT) uses 12v to the solenoids without relays, although the jamb fuse panel does have relay locations *without* relays for unlock, etc. On the legend, these relays are grayed out!? There is an unlock CB, and it has continuity. FWIW, everything has been working normally for close to two years. In the meantime, I've tapped off the drivers door relay power. I've run this back to control a Pop-N-Lock in the tailgate and two additional solenoids to latch up my cap with a fob press. These connections are all soldered and looked okay this morning. I wouldn't be surprised if a little road salt is causing enough drain to pop a fuse in combo with the four solenoids, but where the heck is it?

Hey, I have the same problem ... anyone have a fix for this?

http://www.dieselplace.com/forum/showthread.php?t=364262

I'm still getting aberrant unlock behavior. I unhooked the non-oem lock solenoids. Currently my trucks passenger side door lock works as it should. The driver side hardly ever works at all, but will sometimes surprise me and work normally for a doy or two! I suspect a failed drivers solenoid, but haven't had the time to touch it.

back to the top ... I'm still having trouble. Does anyone know if the bcm has the driver's door unlock integrated?