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With a reputation for capability and premium interiors, the 2026 GMC Sierra 1500 is ready for any project near Fort Worth and weekend adventure out past the Irving area. The 2026 GMC Sierra 1500 is available in eight trim levels, three cab sizes, and three bed lengths, ensuring a combination for nearly every need. Cab sizes include Regular Cab, Double Cab, and Crew Cab, while bed lengths include Short Bed, Standard Bed, and Long Bed. Learn more about the 2026 GMC Sierra 1500 cab and bed configurations in this guide from the team at Sewell Buick GMC of Dallas.
The GMC Sierra 1500 single cab, officially known as the GMC Sierra 1500 Regular Cab, seats three passengers in one row. Meanwhile, the GMC Sierra 1500 Double Cab and GMC Sierra 1500 Crew Cab offer seating for five to six passengers in two rows, depending on the trim level and options selected. Explore the interior dimensions of each cab option below to see how much space is available for your travels around Plano.
Available exclusively on the Pro trim, the GMC Sierra 1500 Regular Cab provides comfortable seating for three passengers in a single row. The driver and passengers will enjoy generous front-row space, including 43.11 inches of headroom and 44.53 inches of legroom. The cabin also offers 66.02 inches of shoulder room and 60.90 inches of hip room, ensuring ample personal space.
For those requiring additional seating, the Double Cab accommodates five to six passengers across two rows. Offered on the Pro, SLE, and Elevation trims, this configuration provides 43.03 inches of front headroom and 39.88 inches in the rear. Legroom is equally accommodating with 44.53 inches up front and 35.24 inches in the back. Passengers will also appreciate the spacious design, which includes over 66 inches of front shoulder room and over 61 inches of front hip room.
The Crew Cab paired with the Short Bed is available across a wide range of trims, from the Pro to the luxurious Denali Ultimate. It seats five to six passengers and maximizes rear-seat comfort, offering an impressive 43.40 inches of rear legroom to complement the 44.53 inches in the front. Headroom measures 43.03 inches in the front and 40.12 inches in the rear, while shoulder and hip room closely mirror the generous proportions of the Double Cab.
Opting for the Crew Cab with the Standard Bed provides similar interior volume while expanding cargo capabilities. Available on trims up to the Denali, this layout maintains the same exceptional headroom and legroom as the Short Bed variant. It offers a slightly different interior width, with 64.54 inches of front shoulder room and 60.78 inches of front hip room, ensuring a premium environment for every occupant.
In addition to the three cab sizes, the 2026 GMC Sierra 1500 is available with three bed lengths. Though not every cab size is available with every bed length, GMC offers the most popular combinations demanded by vehicle owners near Arlington. Explore the exterior dimensions of each 2026 GMC Sierra 1500 cab and bed combination below.
The Regular Cab with a Standard Bed presents a maneuverable profile with an overall length of 210.97 inches and a wheelbase of 126.49 inches. The exterior width measures 81.15 inches without mirrors, accompanied by an overall height of 75.70 inches and a ground clearance of 7.88 inches. For cargo, the standard bed provides a floor length of 79.44 inches, a width of 71.40 inches, and a cargo area height of 22.40 inches, allowing you to transport materials with ease.
Drivers requiring maximum bed capacity may choose the Regular Cab with a Long Bed. This configuration extends the wheelbase to 139.56 inches and the overall length to 229.73 inches. While width and height remain largely unchanged, the ground clearance increases slightly to 7.90 inches. The long bed significantly expands cargo space, offering a generous floor length of 98.20 inches to accommodate larger items effortlessly.
The Double Cab configuration, paired exclusively with the Standard Bed, balances passenger volume with utility. It features an overall length of 231.94 inches and a 147.44-inch wheelbase. The vehicle sits 75.60 inches high with 7.87 inches of ground clearance. The cargo box mirrors the standard bed dimensions of the Regular Cab, maintaining a floor length of 79.44 inches and a width of 71.40 inches.
The popular Crew Cab with a Short Bed offers a sophisticated exterior footprint, measuring 231.92 inches in overall length with a 147.44-inch wheelbase. The vehicle height rests at 75.49 inches, paired with a ground clearance of 7.89 inches. The short bed provides a floor length of 69.92 inches, making it a highly capable option for everyday driving without sacrificing utility.
For those who desire the spacious Crew Cab alongside standard cargo capacity, the Crew Cab with a Standard Bed delivers an imposing presence. This layout extends the overall length to 242.45 inches on a 157.04-inch wheelbase. It features an elevated overall height of 78.24 inches and a commanding ground clearance of 10.97 inches. The cargo box offers the full 79.44-inch floor length, preparing you for any task at hand.
Choosing Sewell Buick GMC of Dallas means experiencing an unrivaled commitment to service that extends far beyond your initial purchase. We believe that we are in the customer service business first, and we simply happen to sell premium vehicles. From the moment you arrive at our Dallas store, one dedicated sales associate will guide you through every step of your journey—from the initial test drive to the final paperwork—ensuring complete trust, confidence, and efficiency. As a Sewell customer, you will also enjoy exclusive long-term benefits, including complimentary car washes for the life of your vehicle and access to our luxurious customer lounge. We invite you to contact our team today to schedule your reservation and experience the genuine care that defines the Sewell difference.
Vehicle specifications, dimensions, features, and capacities are based on the latest manufacturer information at the time of publication and are subject to change without notice. Actual vehicle measurements and payload limits may vary depending on the specific trim level, optional equipment, and cargo weight distribution; please refer to the vehicle’s Owner’s Manual and tire loading information label for exact payload and towing capacities. Dealership amenities, including complimentary car washes, are subject to availability and dealership terms. Please see Sewell Buick GMC of Dallas for complete details.
