Best Truck Bed Tent for the GMC Sierra: 2026 Guide

The GMC Sierra 1500 short bed measures 69.9 inches in interior floor length, 71.4 inches in total interior width, and 50.6 inches between the wheel wells. Those are the three numbers that determine which truck bed tent fits, and they place the Sierra’s short bed firmly in the full-size short bed category, where the widest selection of quality truck tents exists.

The Sierra is the one full-size truck in this guide that shares its bed platform with a sibling truck, the Chevy Silverado, meaning that every tent confirmed for the Silverado is confirmed for the Sierra in the same bed configuration. That platform commonality is genuinely useful because it doubles the available owner review data, doubles the community forum coverage, and means that the Napier and Rightline Gear fitment databases treat the Sierra and Silverado interchangeably at every bed length category.

The Sierra also offers three bed lengths across its lineup, short bed, standard bed, and long bed, which means the tent buying decision starts with knowing which bed your specific Sierra has, not just which truck it is.

GMC Sierra Bed Configurations: The Complete Dimensional Picture

Sierra 1500: Three Bed Options

The 2025 GMC Sierra 1500 offers three distinct bed lengths, with availability depending on cab configuration:

Bed Type	Interior Floor Length	Interior Width	Width Between Wheel Wells	Cab Availability
Short Bed	69.9 in (5.8 ft)	71.4 in	50.6 in	Crew Cab (primary)
Standard Bed	79.4 in (6.6 ft)	71.4 in	50.6 in	Double Cab, Crew Cab
Long Bed	98.3 in (8.2 ft)	71.4 in	50.6 in	Regular Cab

The short bed Crew Cab is the most common Sierra configuration in the camping and overlanding community, it is the Sierra that most buyers choose when prioritizing passenger comfort alongside truck capability. The 69.9-inch interior floor length is the measurement that matters for tent sizing, and it places the Sierra short bed in the same fitment category as the F-150 SuperCrew and RAM 1500 Crew Cab short beds.

The standard bed at 79.4 inches is the Double Cab configuration, less commonly the camping truck choice, but the configuration for Sierra owners who prioritize bed length. The long bed at 98.3 inches is the Regular Cab configuration, available for maximum cargo capacity with minimal passenger accommodation.

Sierra HD (2500HD and 3500HD): Two Bed Options

The Sierra HD lineup offers:

Bed Type	Length	Interior Width	Wheel Well Width
Standard Bed	~82 in	~71 in	~51 in
Long Bed	~98 in	~71 in	~51 in

HD truck owners should note that the Sierra 2500HD and 3500HD’s higher payload ratings handle the weight of any truck tent configuration without concern. A Rightline Gear floorless design on a Sierra 2500HD long bed is a camping platform that can carry genuine overlanding loads, recovery gear, refrigerators, water storage, and sleeping gear, without approaching the payload limit.

The Sierra-Specific Considerations No Generic Guide Covers

The MultiPro Tailgate

The GMC Sierra’s MultiPro Tailgate, a six-position engineered tailgate available across Sierra trims, is one of the Sierra’s most distinctive features and has specific implications for truck bed tent setup.

The MultiPro tailgate has six configurations: primary gate, load stop, full-width step, work surface, inner gate, and inner load stop. For truck bed tent deployment, the relevant position is the primary gate fully lowered, which the tailgate sleeve drapes over and seals around in the standard fashion.

The inner gate position, the smaller hinged panel within the main tailgate that swings inward, creates an access point to the truck bed without fully lowering the main tailgate. This inner gate does not affect the deployed truck tent’s tailgate sleeve, which seals around the main tailgate regardless of inner gate position. What it does affect: the inner gate provides a functional access point to the truck cab’s gear without opening the main tailgate and the tent entry, useful for accessing items stored at the cab end of the bed without disturbing the sleeping arrangement.

The MultiPro tailgate’s step function, the full-width step that deploys at a comfortable height for bed access, is particularly useful for truck bed tent entry and exit. The step positions at a height that reduces the climb from ground level to bed height, which matters for getting in and out of the truck bed tent multiple times during a camping trip.

The AT4 and AT4X Off-Road Trims

The Sierra AT4 and AT4X are the off-road-focused trims most likely to be used for dispersed camping and overlanding, and they have specific considerations for tent setup.

The AT4X’s two-inch factory lift and specialized off-road suspension do not affect bed interior dimensions. The same tent that fits a standard Sierra short bed fits an AT4X in the same bed configuration. The AT4X’s rock sliders and skid plates are below the bed rail line and do not interfere with tent strap attachment.

For AT4 and AT4X owners who run aftermarket bed accessories, Molle panels, bed rack systems, or side-mounted tool storage, verify strap routing compatibility with your specific accessories before purchasing a tent. Strap-based systems like the Rightline Gear floorless design are more adaptable around bed accessories than hook-based designs.

The Decked System Compatibility

A SilveradoSierra.com forum owner specifically noted that the Napier Sportz 57 Series tent fit with their Decked bed storage system installed, documenting this compatibility across a nine-day camping trip. The Decked system creates a raised platform across the truck bed with storage drawers beneath. Tent compatibility with the Decked system depends on whether the Decked platform height is within the tent’s floor-to-strap range, for the Napier Sportz 57, this has been confirmed by at least one owner.

If you run a Decked system or similar bed storage platform on your Sierra, contact both the tent manufacturer and Decked directly to verify compatibility before purchasing, the tent setup over a Decked platform is a different installation than over a bare bed floor.

The Sierra’s Shared Platform With the Silverado

Every Napier and Rightline Gear product confirmed for the Chevy Silverado in a given bed configuration is confirmed for the GMC Sierra in the same configuration. The bed dimensions are identical. The rail geometry is identical. The tailgate profile is identical. This shared-platform reality doubles the available community documentation for Sierra tent fitment, SilveradoSierra.com forum threads document both trucks simultaneously, and the combined owner base provides more real-world fitment feedback than any single-brand truck community produces alone.

The 3 Best Truck Bed Tents for the GMC Sierra

1. Napier Sportz 57 Series: Best Overall for Sierra Short Bed

The Napier Sportz 57 Series is the benchmark truck bed tent recommendation for the Sierra, and the SilveradoSierra.com forum provides direct owner validation across real camping use. One forum owner documented a nine-day trip from Illinois to Idaho using the Sportz 57000 series on their Sierra, reporting that it “worked great” and specifically noted it fit with the Decked bed storage system installed. Another owner who has used the tent since 2015 reported it still looks new, a lifespan claim consistent with proper maintenance of the mid-range polyester tent design.

The Sierra’s MultiPro tailgate works with the Napier Sportz 57’s tailgate sleeve in the same way as a standard tailgate, the sleeve drapes over the fully lowered main tailgate, and the inner gate position remains accessible without disturbing the tent setup.

The built-in awning, the 4-foot by 4-foot covered extension that attaches to the lowered tailgate, is particularly well-suited to the Sierra’s MultiPro tailgate step. The step deploys at a comfortable height for entering and exiting the tent; the awning creates overhead cover for the step zone, producing a sheltered entry-and-exit experience that no other tent in this category provides.

The cab access panel connects the tent interior to the Sierra’s cabin through the rear window. Sierra owners with the available cab power outlet can run a cord through this panel to power a heated blanket, fan, or charging station. Napier’s Sierra-specific page at napieroutdoors.com confirms current model availability and the specific model numbers for each Sierra bed configuration.

The Sportz 57 Series is available in two key variants for Sierra owners: the NA57FR for the 5.5-foot short bed (covering the Sierra Crew Cab short bed’s 69.9-inch interior) and the NA47FR for the 6.6-foot standard bed (covering the Double Cab standard bed’s 79.4-inch interior). Verify your bed length before selecting between models.

For the Sierra long bed (98.3 inches): Use the Rightline Gear 110730 universal or the Kodiak Canvas 7206 8-foot variant, neither Napier’s 57 Series nor the Backroadz is sized for the Sierra’s long bed configuration.

2. Rightline Gear 110750: Best for AT4/AT4X and Loaded Sierra Beds

The Rightline Gear 110750 is the confirmed model for the GMC Sierra 1500 short bed (5.5-foot configuration), listed explicitly by etrailer.com for the Sierra 1500 Limited and confirmed for the Sierra’s bed rail geometry. The Rightline 110750 for the 5.5-foot bed is the model to order for Sierra Crew Cab short bed owners who want the floorless design.

The floorless design is the defining choice for Sierra AT4X and AT4 owners who run loaded beds. Whether you carry recovery gear, a portable refrigerator, Molle-mounted storage, or a bed-based overlanding system, the Rightline’s walls drape over the Sierra’s bed rails and seal at the tailgate without requiring the bed to be cleared first. For a Sierra AT4X that functions as a fully equipped overlanding vehicle, deploying a tent over the full load rather than unloading and reloading at every campsite is the practical choice that makes multi-night dispersed camping genuinely manageable.

The 2,000mm HH rainfly rating matches the Napier Sportz 57’s waterproofing at a lower price. The floorless design means setup requires no pole threading, the tent walls go up, the straps tighten over the Sierra’s bed rails, the tailgate sleeve drapes into position, and the tent is up. Five minutes total from carry bag to sleeping-ready.

The Sierra’s MultiPro tailgate is compatible with the Rightline’s tailgate sleeve approach, the sleeve drapes over the main tailgate in its fully lowered position. The inner gate position remains accessible without disturbing the tent setup, providing the same access-without-opening-the-tailgate utility that Sierra owners value.

The honest limitation is the same as every floorless design: cold air enters from below when temperatures drop below 40°F. For Sierra owners camping in the shoulder seasons at elevation, the AT4X’s primary use environment, the open floor is a genuine thermal limitation. A closed-cell foam base pad placed on the truck bed before tent setup addresses most of this, but does not fully replicate the sealed thermal environment that the Napier’s sewn-in floor provides.

Confirmed Rightline model numbers for Sierra configurations:

• Short bed (5.5 ft / 69.9 in): RL110750
• Standard bed / long bed (6.5 ft+): RL110730 (universal)
• Long bed (8 ft / 98.3 in): RL110730 confirmed for 8-foot beds

3. Napier Backroadz: Best Budget Option for Sierra

The Napier Backroadz is the budget entry point into Napier’s Sierra-compatible lineup, same fitment database verification, same color-coded pole system, same sewn-in bathtub floor construction as the Sportz 57 Series, at a lower price by removing the built-in awning and cab access panel.

For Sierra owners who want to try truck bed tent camping without the Sportz 57’s price commitment, the Backroadz delivers the essential experience: elevated sleeping in a weatherproof enclosed tent with a sewn-in floor that keeps moisture, insects, and the cold metal bed surface separated from the sleeping area.

The etrailer.com listing for the GMC Sierra 1500 confirms the Napier Backroadz as a compatible option, and one reviewer on etrailer’s Sierra 1500 listing specifically noted using the Backroadz with a BakFlip tonneau cover folded upright behind the cab, reporting it worked well in that configuration. That owner note covers both the Backroadz’s compatibility with folding hard tonneau covers and the Sierra’s specific tailgate geometry.

The 1,500mm PU waterproofing is adequate for three-season camping in light to moderate rain. For the Pacific Northwest, mountain environments, or any sustained heavy rain situation, the Sportz 57’s 2,000mm provides meaningful additional protection. For fair-weather camping in mild conditions, the 500mm difference rarely matters in practice.

The difference between the NA44FR (short bed) and NA94FR (standard bed) is the bed length each is sized for, the NA44FR for 5.5-foot Sierra short beds and the NA94FR for 6.6-foot Sierra standard beds. Verify through Napier’s GMC Sierra collection at napieroutdoors.com for your specific year and bed configuration.

The Decision Framework for Sierra Owners

For most Sierra Crew Cab short bed owners who camp regularly: Napier Sportz 57 Series (NA57FR). The owner documentation from SilveradoSierra.com across multi-day trips, the MultiPro tailgate step pairing with the built-in awning, and the 2,000mm waterproofing make it the complete three-season recommendation. Verify the current model number for your specific Sierra year through napieroutdoors.com/collections/gmc-sierra-tents-accessories.

For Sierra AT4X and AT4 owners with loaded overlanding beds: Rightline Gear RL110750 for the short bed. The floorless design deploys over recovery gear, bed racks, and overlanding equipment without unloading. Use the RL110730 universal for the standard and long bed configurations.

For first-time Sierra truck bed tent campers: Napier Backroadz (NA44FR for short bed, NA94FR for standard bed). The lower price, verified Sierra fitment, and sewn-in floor make it the entry point that delivers genuine truck tent camping capability without the Sportz 57 investment.

For Sierra long bed owners (Regular Cab, 98.3 inches): The Rightline Gear RL110730 universal is the most versatile confirmed option. For a premium canvas option, the Kodiak Canvas 7206 8-foot variant covers long bed Sierra configurations with the longest lifespan in the category.

Frequently Asked Questions

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