GMC Sierra - Extended Cab Dimensions (1998-2006)

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On this page you'll find the exact dimensions for the GMC Sierra Extended 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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Production years: 1998 - present Generation: 2 Type of van: pickup Model variant: 1500 & 1500 HD Body style: Extended Cab Also known as: GMC Sierra Chevrolet Cheyenne VIA VTRUX VTA SolTRUX Chevrolet C/K International CV

Dimensions in tables

Sierra truck bed dimensions (Extended Cab)

Truck bed dimensions Fleetside Short Box Fleetside Long Box
Volume (cu. ft.) 56.9 70.7
Length at floor 78.7 97.6
Inside height 19.5 19.5
Width at wheelhouse 50 50
Maximum width at floor 64.8 64.8

Wheelbase of the Sierra:

Wheelbase Length (inch)
Sportside Box 143.5
Fleetside Short Box 143.5
Fleetside Long Box 157.5

Exterior dimensions of the Sierra Extended Cab:

Dimension 4x2 4x4
Overall length - Sportside Box 203.3 203.3
Overall length - Fleetside Short Box 227.8 227.8
Overall length - Fleetside Long Box 246.7 246.7
Cab length 138.7 138.7
Overall height - Fleetside Short Box 71.2 73.9
Overall height - Fleetside Long Box 70.8 73.7

Exterior width of the Extended Cab:

Exterior width 4x2 4x4
Width (excluding mirrors) 78.5 78.5

Extended Cab miscellaneous dimensions

Miscellaneous dimensions 4x2 4x4
Front overhang - Fleetside Short Box 36.9 36.9
Front overhang - Fleetside Long Box 36.9 36.9
Rear overhang - Fleetside Short Box 47.3 47.3
Rear overhang - Fleetside Long Box 52.2 52.2
Front ground clearance - Fleetside Short Box 8 8.5
Front ground clearance - Fleetside Long Box 8 8.5
Rear ground clearance - Fleetside Short Box 8.3 8.6
Rear ground clearance - Fleetside Long Box 8.3 8.6
Ground to top of load floor - Fleetside Short Box 30.5 32.9
Ground to top of load floor - Fleetside Long Box 30.2 32.5
Cab length 138.7 138.7

Interior dimensions

1st row dimensions Extended Cab
Head room 41
Shoulder room 65.2
Hip room 61.4
Leg room 41.3
2nd row dimensions Extended Cab
Head room 38.4
Shoulder room 66.3
Hip room 61.5
Leg room 33.7
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