K 30 1 Ton Pickup 4WD V8-454 7.4L VIN W 4-bbl (1983)
Fig. 14
Rear Wheel Anti-Lock (RWAL) Brake System Code 7 diagnosis. Shorted isolation valve or faulty ECU
Fig. 14
Rear Wheel Anti-Lock (RWAL) Brake System Code 7 diagnosis. Shorted isolation valve or faulty ECU