Heavy Duty Trucks Manuals
11 manuals, free to read online
1967Overhaul & Unit Repair1967 Chevrolet Heavy Duty Truck Series 70–80 Shop ManualST-135-67
1967Wiring Diagrams1967 GMC Truck Wiring Diagrams 1500–9500X-6705
1968Wiring Diagrams1968 GMC Truck Wiring Diagram ManualX-6805
1969Overhaul & Unit Repair1969 Chevrolet Heavy Duty Truck Series 70–90 Shop ManualST-135-69
1969Wiring Diagrams1969 GMC Truck Wiring DiagramsX-6905
1970Service Manual1970 Chevrolet Heavy Duty Truck Shop Manual, Series 70–90ST-135-70
1970Wiring Diagrams1970 GMC Truck Wiring DiagramsX-7005
1971Service Manual1971 Chevrolet Heavy Duty Truck Shop Manual Supplement, Series 70–90ST-332-71
1972Service Manual1972 Chevrolet Heavy Duty Truck Shop Manual Supplement, Series 70–90ST-332-72
1972Wiring Diagrams1972 GMC Truck Wiring DiagramsX-7205
1975Supplement1975 Chevrolet Light and Medium Duty Truck Wiring SupplementST-352-75