Along with the sub, there is a Bose amp that goes in the console that powers all of the loudspeakers in the vehicle when you get that option. I don't believe GM uses a common wiring harness for the different sound system options, so there is probably no connector or harness present if you have the stock system. So, you're going to need to obtain either a Bose amp, or an aftermarket amp to power the sub. Now, most of the loudspeakers in a Bose system use 1 ohm and 2 ohm voice coils. Driving your new sub with an aftermarket amp designed for 8 ohm loads may cause the amp to run hot (... or worse). Be careful what you select if you decide to go with an aftermarket amp. Conversely, if you obtain a Bose amp off of eBay, you would be driving your stock loudspeakers. I don't know the impedance of their voice coils, but I suspect that they are somewhere in the range of 3-4 ohms. The result is you would experience somewhat reduced audio levels. Some time ago, I posted the connector pinout for the Bose amp that goes in our Tahoe. This will help you connect the sub to the amp if you go that route.
