[WaterKing]

One last thing...and I am not 100% sure but if you are looking for a system for the 2009, I think it is different from 2007/2008. My understanding and I don't remember where I read it is that they changed the type coupling on the 2009 exhaust prior to the muffler...similar to the way they changed the way the CAI fits up in the engine compartment. You might want to check a CAD/GMC dealer and ask them to verify which, if any, of the pipes are the same as 2008.