Hi, My keyless entry quit working all of a sudden. I changed the battery, and it still didn't work. I brought the keyfob to Autozone and they had a tester. It was showing my keyfob putting out a signal so it is working. Is it possible that the key fob can lose the Frequency? I called to see how much the dealer charged to re code the fob and it is $40.00 I hate the dealer. Is there a way to set the frequency myself that anyone knows. I know some GM vehicles you can do yourself. My only other thought is maybe a fuse fried out somewhere. It was working perfect before all this, I pushed the unlock and it unlocked one door and then just quit for good. Who knows? Any ideas?

 

there is a fuse i belive in the cab. but you cant program it your self. due to the fact that you got to have a tech 2

 

check all your fuses inside the car bro.. same thing happened to me a while back... cant remember which one it was but one of them was blown. chances are one of yours blew out too.

 

Thanks for the help. I'll check it tomorrow!

 

I'm not sure about the Balt, but I know that on my old cavalier if the keyfob stopped working right you could hold the lock and unlock buttons both for 5 seconds and it would resync the keyfob code with the code in the computer.

 

with the cobalt you got to have the tech 2 to program them

 

you do this happened to me actually also and you have to buy a whole new keyless set up... it sucks cause it was pricey

 

its like 85 bucks. and u have to have all the key fobs with u. whats the lil gm numbers on the back?