Thread: Exhaust Question

Originally Posted by offroadfury6

hm? would these borla muff's work on a 06 grand prix. i know u guys r referring to (as ur picture) the model before mine. New GM's are a B****. I just paid $120 for an aftermarket radio wiring harness...BS since the models before 2000 just costed $20 at best buy....

Sorry to bring this back up so late in the thread and most of you probably know, but the reason for the expensive harness is it contains the cars door tones, beeps, etc... also I think its needed so that the Onstar will still work over the speakers