the security light keeps coming on and wont allow the car to start, can we cut the wires to the alarm or will this make things worse?
I don't know but if it was that simple, thieves would be cutting wires.
Does the car have a chip in the key? Some of the later, more expensive GM have one. The other owners on this forum might have a method to get your car started. http://www.buickforums.com/forums/
Looking for a Used Park Avenue in your area?
CarGurus has 436 nationwide Park Avenue listings starting at $3,975.
Search Buick Park Avenue Questions
Buick Park Avenue Experts