On this page you'll find the exact dimensions for the GMC Sierra Crew Cab 1500 generation 4, made from 2014 to . Below we'll list the dimensions for this pickup from verified sources. First, let's make sure you have the right dimensions in front of you:

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Dimensions in tables

Sierra truck bed dimensions (Crew Cab)

Truck bed dimensions	Short Box (5'8")	Standard Box (6'6")
Volume (cu. ft.)	53.4	61
Length at floor	69.3	78.9
Inside height	21.1	21.1
Width at wheelhouse	51	51
Maximum width at floor	64.6	64.6

Wheelbase of the Sierra:

Wheelbase	Length (inch)
Short Box (5'8")	143.5
Standard Box (6'6")	153

Exterior dimensions of the Sierra Crew Cab:

Dimension	4x2	4x4
Overall length - Short Box (5'8")	230	230
Overall length - Standard Box (6'6")	239.6	239.6
Height - Short Box (5'8")	74.2	74
Height - Standard Box (6'6")	73.7	73.8

Exterior width of the Crew Cab:

Exterior width	4x2	4x4
Overall width - Short Box (5'8")	80	80
Overall width - Standard Box (6'6")	80	80

Crew Cab miscellaneous dimensions

Miscellaneous dimensions	4x2	4x4
Min. ground clearance - Short Box (5'8")	8.7	8.9
Min. ground clearance - Standard Box (6'6")	8.5	8.9
Ground to top of load floor - Short Box (5'8")	34.9	34.3
Ground to top of load floor - Standard Box (6'6")	34.4	34.1

Interior dimensions

1st row dimensions	Crew Cab
Head room	42.8
Shoulder room	64.8
Hip room	60.7
Leg room	45.3
2nd row dimensions	Crew Cab
Head room	40.5
Shoulder room	65.7
Hip room	60.3
Leg room	40.9

Turning circle of the Sierra:

Turning circle:	Kerb-to-kerb	Wall-to-wall
Short Box (5'8")	47.2
Standard Box (6'6")	48.5