Doors don't unlock when shifting back into park

pit0rz · April 20, 2006

I just picked up a 99 1500 LS Silverado. It has power door locks that engage automagically at 10mph or so. When I stop and shift back into PARK, they don't unlock as they do on my 03 Tahoe. Looking through the manual it's not really clear by the wording if they should or shouldn't. Anyone out there with a 99 care to confirm this for me?

Thanks...

RyanZ71 · April 20, 2006

On my truck, the power locks neither lock when I start driving, or unlock when I put the vehicle into park, I do believe it is a computer programable option though!

ken1mod · April 20, 2006

Gentlemen,

How do you program this??

Ken

scrapykunas · April 20, 2006

I have a 99 too. my do not unlock like my buddy's 06. I read somewhere about a small box you wired up for you to have that option but the place he got it from doesn't exist anymore. I too am interested in my doors unlocking.

Shawn T · April 20, 2006

Not on the 99's. Just have to live with it. MY2000 is when the auto lock disable feature came about. I used to own a 99. Frustrating as he!!. For the 2000's and up, I think you have to twinkle your eyelids and jump up an down 3 times to make it work. JK

carneyman · April 20, 2006

Yeah, same for my 99, it was a hastle that you just gotta deal with. And on the new ones its jump up and down 4 times while rubbing your belly and patting your head.

hoorders · April 21, 2006

Yup same here..................my 2000 locks at 10mph or so but will not unlock once placed into park........kinda a hassel......

carneyman · April 21, 2006

Yup same here..................my 2000 locks at 10mph or so but will not unlock once placed into park........kinda a hassel......

<{POST_SNAPBACK}>

You should be able to disable that from 2000 and up...look in the owners manual for the code. Well worth it if its in there.

firefighteremt3100 · April 21, 2006

I just picked up a 99 1500 LS Silverado. It has power door locks that engage automagically at 10mph or so. When I stop and shift back into PARK, they don't unlock as they do on my 03 Tahoe. Looking through the manual it's not really clear by the wording if they should or shouldn't. Anyone out there with a 99 care to confirm this for me?

Thanks...

<{POST_SNAPBACK}>

I had that on my 99 Silverado. Only way to change them is to have the dealer reprogram it. (What I was told anyway). Kind of a pain in the butt but the dealer should know how to do that hehe.

PELICAN · April 21, 2006

Yet one more reason I traded my 99 model for the 02 model. I also did not like the fact that you could not turn off the headlights with the engine running and the parking brake off.

Mad Mac · April 21, 2006

The GM Tech provided a thorough reply to the 1999 Silverado Door Lock topic at:

http://www.gm-trucks.com/forums/index.php?showtopic=49914

hoorders · April 21, 2006

Yup same here..................my 2000 locks at 10mph or so but will not unlock once placed into park........kinda a hassel......

<{POST_SNAPBACK}>

You should be able to disable that from 2000 and up...look in the owners manual for the code. Well worth it if its in there.

<{POST_SNAPBACK}>

Yes I can disable the locks from locking.......there are a couple of different program modes the manual walks you through.......it just doesn't have any program option to unlock the doors once placed into park.

Burbman · April 21, 2006

Here's the procedure from the Owner's Manual of my 2001 Suburban:

hoorders · April 21, 2006

Here's the procedure from the Owner's Manual of my 2001 Suburban:

Still no programming for having the locks unlock when shifted into Park.......only unlocks when you pull the key out of the ignition........

Burbman · April 21, 2006

Agree, I would rather have them unlock in Park rather than wait for the key to be removed. My daughter's '01 Grand Prix has that programming option. You would think that GM would have at least some of their BCM software standardized across brands.....

Just posted the instructions for anyone that didn't have them.