Sierra 3500 2WD V8-6.0L VIN U (2004)
4. Drill 3 mm (1/8 inch) pilot hole at each center punch location.
5. Using pilot hole as guide, drill a 115 mm (29/64 inch) hole through hinge pillar at stud locations. Must be exact drill size (Fig.1.14).
6. Clean and prepare all bare metal surfaces.
IMPORTANT: Prior to refinishing, refer to GM P/N 4901.M-D Refinish Manual for recommended products.
7. Apply approved anti-corrosion primer.
8. Feed fish wire (such as GM part #15017229) through hinge stud hole and out conduit hole in the pillar (Fig.1.15).
9. Install stud (part #15017230) supplied with service hinge into wire end and pull the stud into position. Draw the studs tight through the pillar using
nuts (part #11516746) supplied. Remove each service nut.
10. Apply a full-bodied caulk to the entire hinge mounting surface to ensure a proper seal.