AmpPro FOR SELECT GM VEHICLES. PAC's AmpPRO interface consists of a module and a vehicle-specific T-harness that make the job much easier. Important Note: This AmpPRO interface simplifies the installation of a car amplifier (not included).
This product is a must for any GM that has a Bose system (IO5 or IO6). I had an LC2i coming off the subwoofer before and thought it was good. I was missing so much low end (below 40Hz) that I gained from using this. Sound is clean and setup is extremely easy.