SIERRA 1500 2010 V8 4.8L Crew Cab, Short Bed (69.3in Bed Length) DUAL SPLIT REAR EXIT SIERRA 1500 2010 V8 4.8L Extended Cab, Short Bed (78.7in Bed Length) DUAL SPLIT REAR EXIT SIERRA 1500 2010 V8 5.3L Crew Cab, Short Bed (69.3in Bed Length) DUAL SPLIT REAR EXIT SIERRA 1500 2010 V8 5.3L Extended Cab, Short Bed (78.7in Bed Length) DUAL SPLIT REAR EXIT