2002 Sierra SLT key fobs will not program

[JibbersCrabst]

I just purchased a 2002 Sierra and it came with no key fobs and has a sticker on the window for an aftermarket alarm system. I purchased replacement OEM fobs FCCID: KOBLEAR1XT and they won't program. I use the directions to enter programming mode (insert key, hold unlock, cycle ignition twice and release) and it will make some extra noises like it's cycling the locks but they never cycle, and the remotes won't program. I tried disconnecting the battery for a while and trying again but same result. Any suggestions what to try next? I'm thinking possibly a bad RCDLR but looking for other options to try before I replace that. Thanks!

[richard wysong]

chances are the aftermarket alarm has taken over the door locks . either disconnect it and return all wiring back to the way it was or take it to an installer and see if they can figure it out

[dna9656]

You know, I get that FOBS become lost and I get it when times are tough, times are always tough; losing FOBS and then selling the vehicle without FOBS... seems to me the seller out to deduct the cost of FOBS from the vehicle price. That's just me.

BYW My local ACE Hardware store cuts keys and programs them for $100.00 for my 2015 Silverado. That's a BARGAIN. If you need a key check with your local Ace Hardware store.

Edited July 10, 2024 by dna9656
Spelling, punctuation

[JibbersCrabst]

I have keys I just don't have the FOBs and I wasn't worried about the price because I got a super clean 2002 Z71 with no serious mechanical issues for $3500 in a market where $5k will barely get you a ratted out truck.