Buick Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry your having this problem
was the new computer programmed to this cars VIN number with programming and the theft system relearned ?
the computer needs to be programmed to the cars VIN number using a programming scan tool and software
and shop with programming capabilities can do this for you OR and Napa or Pep Boys can pre program the computer for you then bring it home and plug it it