1964 GMC Suburban w/Rear Wheel Drive (RWD) | Bore: 1.125 In.; Position: Front Left;. 1966 GMC Suburban w/Rear Wheel Drive (RWD) | Bore: 1.125 In.; Position: Front Left;. Drum Brake Wheel Cylinder. 1965 GMC Suburban w/Rear Wheel Drive (RWD) | Bore: 1.125 In.; Position: Front Left;.
