So if that bolt is part of the GMC rocker assembly retainer, maybe the washers are the ones going at either end of the rocker shaft with the cotter pin that hold everything on the shaft???

Good info CrowbarBob!!! thumbs_up


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)