Since you have a GMC, and a one ton at that, you should check out this Gmc site and sign up on their discussion forum. They have a lot of gmc people that can help you. Some are here too, me included, but the other site has more gmc stuff. Your more than welcome to be here too, doesn't cost a penny at either place.
Also, you can't come in here and claim to be the old man. Me and a few others already have you beat on that one. Cecil..........