Quote Originally Posted by zigger215 View Post
The GMOS is a cheap interface made with cheap parts in my opinion. The best harness for noise elimination is the OS-2C-BOSE. Without Bose it's the OS-2C. It's an excellent harness and there is no static pink noise or alternator whine.
I may look into that if it is similarly priced. If I still have problems, I'll at least know its local to the truck.