2009-2012 Chevrolet Colorado Rear Driver & Passenger Side 2008 Chevrolet Silverado 1500 Rear Driver & Passenger Side with RPO Code JF7 Power Disc/Drum with ABS 6400GVW with Shoe Hold Down Pins 2008 Chevrolet Silverado 1500 Rear Driver & Passenger Side with RPO Code JG4 6,400 Lb. GVW, Power Brakes, Vacuum Boosted, 17 In.