Dimensions

Find 2021 GMC Sierra 3500HD CC interior, exterior and cargo dimensions for the trims and styles available. Choose the desired trim / style from the dropdown list to see the corresponding dimensions.

2WD Reg Cab 146" WB, 60" CA

Exterior Dimensions

Wheelbase (in) 146.3
Length, Overall (in) 239.84
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Front Head Room (in) 43.11
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Passenger Capacity 3

SLE 2WD Reg Cab 146" WB, 60" CA SLE

Exterior Dimensions

Wheelbase (in) 146.3
Length, Overall (in) 239.84
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 3
Front Head Room (in) 43.11
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61

2WD Reg Cab 171" WB, 84.5" CA

Exterior Dimensions

Wheelbase (in) 170.8
Length, Overall (in) 264.24
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 84.5
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 3
Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61

SLE 2WD Reg Cab 171" WB, 84.5" CA SLE

Exterior Dimensions

Wheelbase (in) 170.8
Length, Overall (in) 264.24
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 84.5
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 3
Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61

2WD Crew Cab 177" WB, 60" CA

Exterior Dimensions

Wheelbase (in) 176.76
Length, Overall (in) 270.3
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 157.14
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 6
Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Second Head Room (in) 40.12
Second Leg Room (in) 43.4
Second Shoulder Room (in) 65.3
Second Hip Room (in) 61
Passenger Capacity 5

SLE 2WD Crew Cab 177" WB, 60" CA SLE

Exterior Dimensions

Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15
Wheelbase (in) 176.76
Length, Overall (in) 270.3
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 157.14
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -

Interior Dimensions

Passenger Capacity 5
Passenger Capacity 6
Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Second Head Room (in) 40.12
Second Leg Room (in) 43.4
Second Shoulder Room (in) 65.3
Second Hip Room (in) 61

4WD Reg Cab 146" WB, 60" CA

Exterior Dimensions

Wheelbase (in) 146.3
Length, Overall (in) 239.84
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 3
Front Head Room (in) 43.11
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61

SLE 4WD Reg Cab 146" WB, 60" CA SLE

Exterior Dimensions

Wheelbase (in) 146.3
Length, Overall (in) 239.84
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 3
Front Head Room (in) 43.11
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61

4WD Reg Cab 171" WB, 84.5" CA

Exterior Dimensions

Wheelbase (in) 170.8
Length, Overall (in) 264.24
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 84.5
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Passenger Capacity 3
Front Head Room (in) 43.03
Front Leg Room (in) 44.53

SLE 4WD Reg Cab 171" WB, 84.5" CA SLE

Exterior Dimensions

Wheelbase (in) 170.8
Length, Overall (in) 264.24
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 126.65
Cab to Axle (in) 84.5
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Passenger Capacity 3

4WD Crew Cab 177" WB, 60" CA

Exterior Dimensions

Wheelbase (in) 176.76
Length, Overall (in) 270.3
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 157.14
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15
Ground Clearance, Rear (in) 8.15

Interior Dimensions

Passenger Capacity 5
Passenger Capacity 6
Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Second Head Room (in) 40.12
Second Leg Room (in) 43.4
Second Shoulder Room (in) 65.3
Second Hip Room (in) 61

SLE 4WD Crew Cab 177" WB, 60" CA SLE

Exterior Dimensions

Ground Clearance, Rear (in) 8.15
Wheelbase (in) 176.76
Length, Overall (in) 270.3
Width, Max w/o mirrors (in) 80.84
Height, Overall (in) 80.1
Overhang, Front (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Front Bumper to Back of Cab (in) 157.14
Cab to Axle (in) 60
Cab to End of Frame (in) - TBD -
Ground to Top of Load Floor (in)
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) 95.42
Frame Width, Rear (in) 89.15
Ground Clearance, Front (in) 8.15

Interior Dimensions

Second Leg Room (in) 43.4
Second Shoulder Room (in) 65.3
Second Hip Room (in) 61
Passenger Capacity 5
Passenger Capacity 6
Front Head Room (in) 43.03
Front Leg Room (in) 44.53
Front Shoulder Room (in) 66.02
Front Hip Room (in) 61
Second Head Room (in) 40.12