This is the original wiring diagram printed by GM for dealer mechanics. You can follow the wiring in your truck from bumper-to-bumper. It will help you to understand connector configurations, and locate & identify circuits, relays, and grounds. Although the schematic is in black and white, the color of each wire is noted. You will not find this diagram in your shop manual. The schematic measures 8.5" x 11" when folded up, and opens up to 11" by 38". The diagram pictured is an example of this type when folded, but is not the actual diagram for your vehicle. Buy now for the best electrical repair info - the factory wiring diagram.
Wiring Diagrams Medium/Heavy Truck 1983 GM P4T P6T
This item is original.
11.00 x 8.50 x 0.10 inches
Covers forward control chassis models P4T and P6T with both gasoline and diesel engines. These are forward control chassis typically used for stepvans, motorhomes, and buses.
1983 Chevrolet P40
1983 Chevrolet P60
1983 Chevrolet School Bus Chassis B6P042
1983 GMC Motorhome Chassis
1983 GMC P4500
1983 GMC P6500
1983 Chevrolet P40 1983 Chevrolet P60 1983 Chevrolet School Bus Chassis 1983 GMC Motorhome Chassis 1983 GMC P4500 1983 GMC P6500