GM Full Size Vans 1967-1986 Repair Guide

WIRING DIAGRAMS

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See Figures 1 through 20





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Fig. Fig. 1: Sample diagram-how to read and interpret wiring

 


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Fig. Fig. 2: Common wiring diagram symbols

 


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Fig. Fig. 3: Engine wiring-1967-76 G-Series and Step Vans with 194, 230, 250, 292, 305, 307, 350, 400 and 454 cu. in. engines

 


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Fig. Fig. 4: Engine wiring-1977-78 G-Series and Step Vans with 250, 292, 305, 350 and 400 cu. in. engines

 


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Fig. Fig. 5: Engine wiring-1979-80 G-Series vans with 250, 305, 350 and 400 cu. in. engines

 


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Fig. Fig. 6: Engine wiring-1979-85 Step Vans with 292 and 350 cu. in. engines; 1981-86 Step Vans with 454 cu. in. engine

 


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Fig. Fig. 7: Engine wiring-1981-82 G-Series vans with 250 and Heavy Duty 305 cu. in. engines (Federal); 305 and 350 cu. in. engines (California)

 


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Fig. Fig. 8: Engine wiring-1981-86 G-Series vans with 262, 305 and Light Duty 350 engines; 1985-88 G-Series vans with Heavy Duty 350 engines (Federal)

 


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Fig. Fig. 9: Engine wiring-1983-86 G-Series vans with 262, 305 and 350 cu. in. engines (California)

 


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Fig. Fig. 10: Engine wiring-1983-84 G-Series and Step Vans with 6.2L diesel engine (Federal)

 


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Fig. Fig. 11: Engine wiring-1983-86 G-Series vans with 6.2L diesel engine (California)

 


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Fig. Fig. 12: Engine wiring-1986 Step Vans with 292 and 350 cu. in. gasoline engines; 1985-86 Step Vans with 6.2L diesel engines

 


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Fig. Fig. 13: Engine wiring-1985-86 G-Series vans with 6.2L diesel engine (Federal)

 


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Fig. Fig. 14: Chassis wiring-1967 van models

 


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Fig. Fig. 15: Chassis wiring-1967 van models (continued)

 


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Fig. Fig. 16: Chassis wiring-1968-72 van models

 


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Fig. Fig. 17: Chassis wiring-1968-72 van models (continued)

 


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Fig. Fig. 18: Chassis wiring-1973-86 van models

 


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Fig. Fig. 19: Chassis wiring-1973 van models (continued)

 


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Fig. Fig. 20: Chassis wiring-1974-86 van models (continued)

 

 
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