1971 GMC Truck Electrical Wiring Diagram Service Manual. Original.
This booklet contains Wiring Diagrams for Series 4500 through 6500 GMC Trucks built after August 10, 1970, and Series 7500 through 9502 GMC Trucks built after October 12, 1970. Truck Series 1500 through 3500 Diagrams are included in GMC Truck Service Manual X-7124 (NOT Included) or X-7132 (NOT Included).
To determine which diagrams are applicable to a specific truck series one would refer to the Wiring Diagram Index.
Note: Five diagrams (T-7305 through T-7309-1) do not appear in the index. These are schematic diagrams of "Body Builder's Connections."
Condition: Wiring Diagrams are used in Dealership Shops, Independent Garages and in Fleet Environments and thus can reflect such use, most often showing extensive signs of soiling, age, and wear. The information within is still legible and can give valuable insight. The images shown are representative of what is shipped.
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