Automatic door lock programming [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Automatic door lock programming


Wayne Dohnal
07-26-2005, 07:06 PM
I found something in my 2003 service manual about the door lock programming that is something for the '05 owners could try for shutting off the automatic door locks. It lets you program the locks without using the DIC. If GM just did a quick hack to remove the door lock programming, they might have just removed it from the DIC and not changed this other way. It's something to try.

First you have to enter the door lock programming mode:

- Start with the ignition OFF.
- Pull the signal/multifunction all the way toward you and hold it there.
(Is this the turn signal lever?)
- Turn the key to RUN and LOCK twice.
- Release the signal/multifunction lever.
- You should now hear the lock switch lock and unlock, and the horn will chirp twice.
- You now have 30 seconds to program the locks.

(No, I didn't make this up as a joke! And you don't have to stand on your head, turn circles, or anything like that.)

You program the locks by pressing the lock or unlock switch one, two, three, or four times within the 30 second window.

- Lock, 1 time: Lock doors when transmission shifted into gear.
- Lock, 2 times: Lock doors when vehicle speed reaches 8 mph.
- Lock, 3 times: No automatic door locking.

- Unlock, 1 time: Unlock driver door when shifted into PARK.
- Unlock, 2 times: Unlock all doors when shifted into PARK.
- Unlock, 3 times: Unlock all doors when key removed from ignition.
- Unlock, 4 times: No automatic door unlocking.

If you turn the ignition to RUN the programming mode is exited. If you dont press any buttons during the 30-second window, programming mode exits and I don't know what happens if you didn't finish what you wanted to do.

John Havilah
07-27-2005, 03:31 PM
Wayne,

I tried the suggested protocol and I'm sorry to say it would not work. It did change the settings but only to those available on the 05 DIC. It was a good idea though. When I was able to enter the programming mode I was pretty excited that I would finally be rid of GMC's attempt to keep me safe (or them free of lawsuits thanks to our social state of affairs).

Anyway, thanks very much. I'll give it a few more try's this weekend just to be sure.

John