On this page you'll find the exact dimensions for the GMC Sierra Crew Cab 1500 generation 5, made from 2019 and currently still being produced. 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	Standard Bed (6'6")	Long Bed (8')
Volume (cu. ft.)	71.7	89.1
Length at floor	79.44	98.18
Inside height	22.4	22.4
Width at wheelhouse	50.63	50.63
Maximum width at floor	71.4	71.4

Wheelbase of the Sierra:

Wheelbase	Length (inch)
Short Bed (5'8")	147.4
Standard Bed (6'6")	157

Exterior dimensions of the Sierra Crew Cab:

Dimension	4x2	4x4
Overall length - Short Bed (5'8")	231.7	231.7
Overall length - Standard Bed (6'6")	241.2	241.2
Overall height - Short Bed (5'8")	75.49	75.49
Overall height - Standard Bed (6'6")	75.35	75.35

Exterior width of the Crew Cab:

Exterior width	4x2	4x4
Max. width w/o mirrors - Short Bed (5'8")	81.2	81.2
Max. width w/o mirrors - Standard Bed (6'6")	81.2	81.2

Crew Cab miscellaneous dimensions

Miscellaneous dimensions	4x2	4x4
Ground clearance, front - Short Bed (5'8")	7.89	8.09
Ground clearance, front - Standard Bed (6'6")	7.75	7.95
Ground clearance, rear - Short Bed (5'8")	7.89	8.09
Ground clearance, rear - Standard Bed (6'6")	7.75	7.95

Interior dimensions

1st row dimensions	Crew Cab
Head room	43
Shoulder room	66
Hip room	61.18
Leg room	44.5
2nd row dimensions	Crew Cab
Head room	40.1
Shoulder room	65.1
Hip room	60.24
Leg room	43.4