2009 GMC Sierra 2500HD Regular Cab - Dimensions
Dimensions - Exterior
  Regular Cab, Long Box
Wheelbase (in / mm): 133 / 3378
Overall length (in / mm): 224.7 / 5708
Overall width (in / mm): 80 / 2032
Overall height: (in / mm): 76.3 / 1939
Track - front (in / mm): 68.6 / 1744
Track - rear (in / mm): 66 / 1676
Minimum ground clearance (in / mm): 2WD: 9.5 / 243
4WD: 9.5 / 243
Step-in height (in / mm): 25.2 / 640
Cargo box - Dimensions
  Long Box
Cargo volume (cu ft / L): 75.5 / 2138
Length at floor (in / mm): 97.6 / 2479
Width at floor (in / mm): 62.4 / 1586
Tailgate width (in / mm): 61.5 / 1564
Width between wheel housings (in / mm): 50.6 / 1286
Inside height (in / mm): 21 / 553
Interior - Dimensions
  Regular Cab
Headroom (in / mm): 41.4 / 1051
Legroom (in / mm): 41.3 / 1049
Shoulder room (in / mm): 65.2 / 1657
Hip room (in / mm): 62.5 / 1588
Capacities
  Regular Cab
Seating: 2-3
Fuel tank (gal / L): 34 / 129 (long box)
Engine oil (qt / L): 6.0L: 6.0 / 5.7
6.6L: 10 / 9.5
Cooling system (qt / L): 6.0L: 16.4 / 15.5
6.6L: 25.4 / 24