We have three outstanding pickup trucks on our lot in Fremont thanks to the GMC Sierra 1500, GMC Sierra 2500, and GMC Sierra 3500. The light-duty version, the 1500, comes with three GMC Sierra bed sizes. Meanwhile, the heavy-duty versions (2500 and 3500), have two GMC Sierra bed sizes to choose from with these new vehicles. 

The GMC Sierra truck bed size you can have depends on the cab size you select. So, if you favor towing or cargo-hauling in the bed, we’ve got some numbers to digest when it comes to the GMC Sierra truck bed size you favor for your tasks around Omaha. Discover more details with our guide from Sid Dillon Buick GMC Fremont.

How Big Is the GMC Sierra Bed?

As we said, how big the GMC Sierra bed is will depend on which cab you want and the trim you select. Choose from the Crew Cab, Double Cab, and Regular Cab. Look at the options here:

GMC Sierra Truck Bed Size by Cab for the 1500 Models

GMC Sierra 1500 Crew Cab 

• Short Bed
• Standard Bed

GMC Sierra 1500 Double Cab 

• Standard Bed

GMC Sierra 1500 Regular Cab

• Standard Bed
• Long Bed

GMC Sierra Truck Bed Size by Cab for the 2500 Models

For the GMC Sierra 2500 and 3500, there is no short bed option. 

GMC Sierra 2500 & 3500 Crew Cab 

• Standard Bed
• Long Bed

GMC Sierra 2500 & 3500 Double Cab 

• Standard Bed
• Long Bed

GMC Sierra 2500 & 3500 Regular Cab

• Long Bed

As you can see, the Double Cab for the heavy-duty versions comes with two GMC Sierra bed sizes instead of just one for the light-duty version. So, how big the GMC Sierra bed is, along with the cab size, will also depend on whether you want the 1500 or 2500 for tasks around Lincoln. 

Size of the GMC Sierra Truck Bed: Dimensions

Now, we’ll tell you about the size of the GMC Sierra truck bed with the exact dimensions. That way, you can see what cargo box you might need for your requirements in Columbus and beyond. The dimensions of the truck beds are slightly different between the light-duty and heavy-duty models. 

For instance, the cargo box height is around 1.5 inches shorter in the heavy-duty models. That’s because of the fifth-wheel trailer capabilities. But the standard bed is about 3 inches longer.

Size of the GMC Sierra Truck Bed for 1500 Models

Standard Bed

• Cargo Box Length @ Floor: 79.4 inches

• Cargo Box Width @ Floor: 71.4 inches

• Cargo Box Width @ Wheelhousings: 50.6 inches

• Cargo Box Height: 22.4 inches

• Cargo Volume: 71.7 cubic feet

Long Bed

• Cargo Box Length @ Floor: 98.2 inches

• Cargo Box Width @ Floor: 71.4 inches

• Cargo Box Width @ Wheelhousings: 50.6 inches

• Cargo Box Height: 22.4 inches

• Cargo Volume: 98.2 cubic feet

Short Bed

• Cargo Box Length @ Floor: 69.9 inches

• Cargo Box Width @ Floor: 71.4 inches

• Cargo Box Width @ Wheelhousings: 50.6 inches

• Cargo Box Height: 22.4 inches

• Cargo Volume: 62.9 cubic feet

Size of the GMC Sierra Truck Bed for 2500 & 3500 Models

Standard Bed

• Cargo Box Length @ Floor: 82.3 inches

• Cargo Box Width @ Floor: 71.4 inches

• Cargo Box Width @ Wheelhousings: 51.9 inches

• Cargo Box Height: 21.0 inches

• Cargo Volume: 71.7 cubic feet

Long Bed

• Cargo Box Length @ Floor: 98.3 inches

• Cargo Box Width @ Floor: 71.4 inches

• Cargo Box Width @ Wheelhousings: 50.6 inches

• Cargo Box Height: 21.0 inches

• Cargo Volume: 98.2 cubic feet

Test-Drive a New GMC Sierra for Sale at Sid Dillon Buick GMC Fremont

Ready to see a GMC Sierra truck in person? Contact us or call (402) 512-0775 to schedule a test drive with our team. Until we meet, develop a monthly budget with the help of our payment calculator. If you like what you see after the test drive, apply for financing to pre-qualify for an auto loan.