Anti-Theft light kept coming on and the dealership told me to start using the other remote. Did that and it worked for a little while ---- now the anti-theft light comes on intermittently. Today I went to the local Recycle Center and the darn thing wouldn't start AT ALL! I contacted OnStar and asked them to run diags -- nothing. The radio works, called a friend to come pick me up via OnStar, bell comes on when the key is in the ignition, dash and overhead lights were bright --- all this tells me the battery is good (put a new one in a year ago)... Battery connections were good.... Guess it's back to the dealership -------- any other suggestions?

Donnie Matney

• 426 Answers
• Posted on Aug 14, 2009

SOURCE: Strats but then shuts down.

there is no code its in the key. they sometimes will lose the required resistance.
there is a reciever for the signal on key in ignition and in the key.do you know if this is the type you have?

SOURCE: 1996 yukon turns over but no start,have spark and

SCAN IT TO MAKE SURE YOU HAVE NO CODES.BUT CHECK THE FUEL INJECTOR FUSE.YOUR PCM DRIVER OR BOARD CIRCUITS.NOT WORKING.

SOURCE: looking for instructions to bypass, remove,disable

Your problem may be a bad ignition lock switch it is a common problem usually caused by worn ignition keys. I would get a new key and see if that don't solve your problem. If that don't work then you need to replace the lock itself they have a security feature built in them that won't allow the car to start unless the proper key is installed (sometimes a new key works) this prevent thieves from taking your car by using a screwdriver or by hot wiring ...This security feature is in the lock itself not in the key GM did put it in the key but not for your vehicle

SOURCE: We just bought a used suburban with a remote

I HATE those things. I had one in a f150 I bought .Had the exact same symptoms you describe. Made by Bulldog. Ended up removing it. No more problems after that.

SOURCE: 1998 Gmc Yukon wont start due to Anti Theft alarm system how do I get Yukon to start again

Maybe by disconnectting your battery and reconnectting, you might be able to reset system.