Condition Price Qty  
Very Good $29.00
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.
"Cab, Engine and Chassis Wiring - DC/DN/FC/FN-9502 - MD-5569"
This item is original.
8.50 x 11.00 x 0.10 inches
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This diagram covers 1970 GMC Astro 95 models with 6 cylinders also known as D9, equipped with the 6 cylinder Cummins diesel engine. See my other items for other engines. To verify that this is the correct diagram for your truck, you can check your VIN code. The 2nd digit should be a D or an F for the heavy duty aluminum tilt cab, the 3rd digit should be a C for the 6 cyl Cummins.
1970 GMC Astro 95
1970 GMC Astro 95