He knows about noting about GMC's. Is a very capable mechanic. I talked him into it. I don't know if he bought it because he got tired of the headaches from me beating him on his head. Or just to shut me up. We're be on that now. He lives in Pawnee Ill that's 10 miles South of Springfield. Can someone just point things out that he really should attend too. He's 300 miles from me. Call my cell. 319-521-4891, or e-mail me. Bob Dunahugh