OER Parts offers a wide selection of Brake Components for your 1970 GMC C35/C3500 Pickup. OER Parts offers 1970 GMC C35/C3500 Pickup Wheel Cylinders, 1970 GMC C35/C3500 Pickup Front Wheel Cylinders 1970 GMC C35/C3500 Pickup Rear Wheel Cylinders, 1970 GMC C35/C3500 Pickup Wheel Cylinder Retainer, 1970 GMC C35/C3500 Pickup Drum Brake Bleeder Screws, 1970 GMC C35/C3500 Pickup Front Wheel Cylinder Repair Set, 1970 GMC C35/C3500 Pickup Rear Wheel Cylinder Repair Set, and 1970 GMC C35/C3500 Pickup Wheel Cylinder Pins.