C 2500 Truck 2WD V8-379 6.2L DSL VIN J FI (1986)
Cruise Control Switch: Testing and Inspection
Off/On/Resume/Accel Switch Test
Fig. 15 On/Off/Resume/Accel switch diagnostic chart. Custom Cruise III
Refer to Fig. 15 to check Off/On/Resume/Accel switch and related wiring.