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. The schematic measures 8.5" x 11" when folded up, and opens up to 11" by 38". Buy now for the best electrical repair info - the factory wiring diagram.
General Motors
Wiring Diagrams Light Duty Truck 1986 GM ST
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Covers light duty GMC & Chevy S/T truck models including Jimmy, S10, S15, and Blazer. .
1986 Chevrolet S10 Blazer Durango Sport Utility 2-Door
1986 Chevrolet S10 Blazer Sport Sport Utility 2-Door
1986 Chevrolet S10 Blazer Sport Utility 2-Door
1986 Chevrolet S10 Blazer Tahoe Sport Utility 2-Door
1986 Chevrolet S10 Cab & Chassis 2-Door
1986 Chevrolet S10 Durango Extended Cab Pickup 2-Door
1986 Chevrolet S10 Durango Standard Cab Pickup 2-Door
1986 Chevrolet S10 Extended Cab Pickup 2-Door
1986 Chevrolet S10 Sport Extended Cab Pickup 2-Door
1986 Chevrolet S10 Sport Standard Cab Pickup 2-Door
1986 Chevrolet S10 Standard Cab Pickup 2-Door
1986 Chevrolet S10 Tahoe Extended Cab Pickup 2-Door
1986 Chevrolet S10 Tahoe Standard Cab Pickup 2-Door
1986 GMC S15 Cab & Chassis 2-Door
1986 GMC S15 Extended Cab Pickup 2-Door
1986 GMC S15 Gypsy Extended Cab Pickup 2-Door
1986 GMC S15 Gypsy Standard Cab Pickup 2-Door
1986 GMC S15 High Sierra Extended Cab Pickup 2-Door
1986 GMC S15 High Sierra Standard Cab Pickup 2-Door
1986 GMC S15 Jimmy Gypsy Sport Utility 2-Door
1986 GMC S15 Jimmy Sierra Classic Sport Utility 2-Door
1986 GMC S15 Jimmy Sport Utility 2-Door
1986 GMC S15 Sierra Classic Extended Cab Pickup 2-Door
1986 GMC S15 Sierra Classic Standard Cab Pickup 2-Door
1986 GMC S15 Standard Cab Pickup 2-Door
1986 Chevrolet S10 1986 Chevrolet S10 Blazer 1986 GMC S15 1986 GMC S15 Jimmy