I had a bad battery and my tahoe wouldn't start. It triggered the service anti theft system as I was trying to use my auto start. I jumped the battery and the service anti theft light went away. Two weeks later I went to buy me a new battery and after I put in the new one the service anti theft light returned. The truck starts and runs fine but the light comes every time I start the car now. Is there a way i can clear the message? The dealer wants 100 just to look at it.

 

Might scan for codes and reset if any found.