I know some disagree with me, but I still think a simple, inexpensive pneumatic belt tensioner pushing on the back side of the PS/alt belt at its longest run would go a long way to increasing belt wrap at the alternator thereby decreasing or eliminating belt squeak there and at the power steering pulley. It would mount on a simple pivot point and push against a stationary member. If I still had a GMC I think I could prototype one in an afternoon.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com