2025 GMC Truck Bed Sizes

Whether you’re hauling materials for your next DIY project or loading up sporting gear for your exciting weekend outside of Milford, there’s sure to be a GMC pickup with the bed space you need. Every truck in the lineup, from the compact GMC Canyon to the off-road-ready Hummer EV Pickup, offers versatile bed options designed to help you carry all your favorite cargo. Learn more about the 2025 GMC truck bed sizes with this guide from Kent County Motors before stopping by our dealership near Smyrna to see all the GMC bed lengths firsthand.

2025 GMC Truck Bed Dimensions By Model

Several GMC truck bed sizes are available across the 2025 lineup. Although some models, like the GMC Canyon, only offer a single bed configuration, others, like the GMC Sierra 1500, provide up to three unique sizes to help you customize your new pickup. Explore all the GMC truck bed dimensions for each model below to discover whether the standard GMC Canyon bed size or the Long Bed on the GMC Sierra HD is right for your Middletown lifestyle:

GMC Canyon Bed Size: Standard Bed

• Length (At Floor): 61.7 inches
• Width (At Floor): 58.1 inches
• Width (At Wheelhousings): 45.5 inches
• Maximum Cargo Volume: 41.9 cubic feet

GMC Sierra 1500 Bed Size: Short Bed

• Length (At Floor): 69.92 inches
• Width (At Floor): 71.4 inches
• Width (At Wheelhousings): 50.63 inches
• Maximum Cargo Volume: 62.9 cubic feet

GMC Sierra 1500 Bed Size: Standard Bed

• Length (At Floor): 79.44 inches
• Width (At Floor): 71.4 inches
• Width (At Wheelhousings): 50.63 inches
• Maximum Cargo Volume: 71.7 cubic feet

GMC Sierra 1500 Bed Size: Long Bed

• Length (At Floor): 98.2 inches
• Width (At Floor): 71.4 inches
• Width (At Wheelhousings): 50.62 inches
• Maximum Cargo Volume: 89.1 cubic feet

GMC Sierra HD Bed Size: Standard Bed

• Length (At Floor): 82.25 inches
• Width (At Floor): 71.4 inches
• Width (At Wheelhousings): 51.85 inches
• Maximum Cargo Volume: 69.5 cubic feet

GMC Sierra HD Bed Size: Long Bed

• Length (At Floor): 98.27 inches
• Width (At Floor): 71.4 inches
• Width (At Wheelhousings): 50.55 inches
• Maximum Cargo Volume: 83.5 cubic feet

GMC Sierra EV Bed Size: Standard Bed

• Length (At Floor): 70.59 inches
• Width (At Floor): 63.35 inches
• Width (At Wheelhousings): 49.42 inches
• Maximum Cargo Volume: 57.5 cubic feet

GMC Hummer EV Pickup Bed Size: Standard Bed

• Length (At Floor): 60.1 inches
• Width (At Floor): 61.02 inches
• Width (At Wheelhousings): 50.08 inches
• Maximum Cargo Volume: 36.7 cubic feet

See All The GMC Bed Lengths At Kent County Motors

Now that you’ve read about the 2025 GMC truck bed dimensions, it’s time to continue your research at Kent County Motors. Contact us online or by phone at (302) 316-4808 to schedule an appointment at our Dover dealership, and our team will walk you through all the GMC bed lengths in person. In the meantime, continue learning about what each premium truck has to offer with the in-depth guides at our research center.