On this page you'll find the exact dimensions for the GMC Sierra Crew Cab 1500 & 1500 HD generation 2, made from 1998 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	Fleetside Short Box
Volume (cu. ft.)	56.9
Length at floor	78.7
Inside height	19.5
Width at wheelhouse	50
Maximum width at floor	64.8

Wheelbase of the Sierra:

Wheelbase	Length (inch)
Fleetside Short Box	153

Exterior dimensions of the Sierra Crew Cab:

Dimension	4x2	4x4
Overall length - Fleetside Short Box	237.2	237.2
Cab length	148.2	148.2
Overall height - Fleetside Short Box	96.1	96.1

Exterior width of the Crew Cab:

Exterior width	4x2	4x4
Width (excluding mirrors)	79.7	79.1

Crew Cab miscellaneous dimensions

Miscellaneous dimensions	4x2	4x4
Front overhang - Fleetside Short Box	37	37
Rear overhang - Fleetside Short Box	47.2	47.2
Front ground clearance - Fleetside Short Box	7.9	8.9
Rear ground clearance - Fleetside Short Box	7.4	8.3
Cab length	148.2	148.2

Interior dimensions

1st row dimensions	Crew Cab
Head room	41.1
Shoulder room	65.2
Hip room	61.4
Leg room	41.3
2nd row dimensions	Crew Cab
Head room	39.9
Shoulder room	65.1
Hip room	62.9
Leg room	38.8