Guys, my dad just got a "new" 2004 Silverado SS. Here is his question, defenitely not my area of expertice.

The remote zapper on the truck behaves backward from what it's supposed to. When you lock it, it's supposed to chirp the horn if you press the lock button twice to confirm locking. It doesn't do that. When you unlock it, it unlocks the driver door if you press it once, and unlocks both doors if you press it twice. However, it also chirps the horn when you press unlock twice, and the manual says nothing about that. Seems like the two press functions are reversed. I know on your brothers Lancer it is programmable but I can't find anything like that for GM Truck keyless remotes.

Any ideas, or does he just need a new fob?

 

Its not in the key fob. It in the programming and on the steering wheel you have many buttons and you have to push the button on the lower right steering arm that looks kinda like a book and you keep pushing and you will come to remote unlock and lock feedback and you can change it from there because I have an 03 and ive messed with it many times. Hope this helps!

 

Good call, that was it.