GMC Sierra Bed Sizes

From the North Miami Beach job site to family adventures past the Coral Gables area, a new GMC Sierra pickup is ready for work! Depending on the model, truck shoppers can choose from three cab sizes, three bed lengths, eight trim levels, multiple engine options, and either two-wheel drive or four-wheel drive. What are the GMC bed sizes and dimensions? Explore the dimensions of the available GMC Sierra bed sizes in this guide from the team at Buick GMC of North Miami!

What Are the GMC Bed Sizes?

The 2025 GMC Sierra 1500 is available in three bed lengths, while 2025 GMC Sierra HD models are offered with two bed sizes. Though not every bed size is available with every cab option, the automaker offers the most popular configurations. What are the GMC bed sizes? See the available bed sizes by model below:

2025 GMC Sierra Bed Sizes: 1500

• Long Bed: 8-Foot, 2-Inch (Regular Cab)
• Standard Bed: 6-Foot, 7-Inch (Regular Cab, Double Cab, Crew Cab)
• Short Bed: 5-Foot, 10-Inch (Crew Cab)

2025 GMC Sierra Bed Sizes: 2500 HD

• Long Bed: 8-Foot, 2-Inch (Regular Cab, Double Cab, Crew Cab)
• Standard Bed: 6-Foot, 10-Inch (Double Cab, Crew Cab)

2025 GMC Sierra Bed Sizes: 3500 HD

• Long Bed: 8-Foot, 2-Inch (Regular Cab, Double Cab, Crew Cab)
• Standard Bed: 6-Foot, 10-Inch (Crew Cab)

What Are the GMC Bed Size Dimensions?

No matter which model or bed size you choose, you will have plenty of space to haul your work supplies or your family’s gear in Hollywood and Fort Lauderdale. Check out the dimensions of the available GMC Sierra bed sizes below:

2025 GMC Sierra Bed Size Dimensions: 1500

Long Bed

Available On: Regular Cab

• 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

Standard Bed

Available On: Regular Cab, Double Cab, Crew Cab

• 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

Short Bed

Available On: Crew Cab

• 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

2025 GMC Sierra Bed Size Dimensions: 2500 HD

Long Bed

Available On: Regular Cab, Double Cab, Crew Cab

• Cargo Box Length @ Floor: 98.27 inches

• Cargo Box Width @ Floor: 71.40 inches

• Cargo Box Width @ Wheelhousings: 50.55 inches

• Cargo Box Height: 21.00 inches

Standard Bed

Available On: Double Cab, Crew Cab

• Cargo Box Length @ Floor: 82.25 inches

• Cargo Box Width @ Floor: 71.40 inches

• Cargo Box Width @ Wheelhousings: 51.85 inches

• Cargo Box Height: 21.00 inches

2025 GMC Sierra Bed Size Dimensions: 3500 HD

Long Bed

Available On: Regular Cab, Double Cab, Crew Cab

• Cargo Box Length @ Floor: 98.27 inches

• Cargo Box Width @ Floor: 71.40 inches

• Cargo Box Width @ Wheelhousings: 50.55 inches

• Cargo Box Height: 21.00 inches

Standard Bed

Available On: Crew Cab

• Cargo Box Length @ Floor: 82.20 inches

• Cargo Box Width @ Floor: 71.40 inches

• Cargo Box Width @ Wheelhousings: 51.85 inches

• Cargo Box Height: 21.00 inches

Test-Drive a 2025 GMC Sierra Pickup at Buick GMC of North Miami!

Now that you know the dimensions of the available GMC Sierra bed sizes, it’s time to see these remarkable trucks in action. Contact us today to schedule your test drive in a new GMC Sierra 1500 or a new GMC Sierra HD at Buick GMC of North Miami! Our team will review all the available configurations and capabilities to ensure we find the best truck for your lifestyle and needs. Use our online tools to get pre-approved for financing and browse our new vehicle specials ahead of time.