Don't let the Best Buy hacks near your car.
The install done right cost more you have to bypass the security system.
true- many aftermarket units- can cause havoc with the cars computer.
They may work ok for a while-- but we see too many post of the alarms eventually acting up- and not allowing the car to start- or causing electrical gremlins.
You dont say what yr and trim you have...
But If you have the right trim---- you can have the GM add on module installed.
witch may require a hood sensor- and the remote start module- and some programming.
If I were having it installed... Id go with the GM unit.
I know some have had no issues with aftermarket--- but just read too many problems about those...