Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclaimer here.
If you use a GMC Sierra for work or weekend projects, the right truck toolbox makes hauling and organizing tools easier and safer. A properly chosen toolbox protects equipment from weather, reduces cab clutter, and ensures quick access to frequently used tools. This guide highlights five shortlisted truck toolboxes that fit the GMC Sierra bed and covers the key fitment and mounting considerations. We evaluated build quality, mounting systems, and weather resistance to help you pick the right style for your needs.
Looking for other parts? See all GMC Sierra parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | RealTruck / extang Trifecta 2.0 Trifecta Toolbox Soft Folding Tonneau Cover |  |
| Best Budget The cheapest option that still gets the job done reliably | Nilight Left-Side Swing-Out Truck Bed Tool Box for GMC Sierra 1500 (2019–2020) |  |
| Most Sold A high-volume bestseller chosen again and again | Nilight Truck Bed Tool Box Set for Chevrolet Silverado & GMC Sierra (Driver and Passenger Side) |  |
| Best Value for Money The sweet spot between price and what you get | GRAND ORANGE Lockable Truck Bed Storage Box Pair for Chevy Silverado/GMC Sierra (2007–2019) |  |
| Best Overall The best all-around choice for most situations | YHTAUTO Swing Truck Bed Toolboxes (set of 2) — Lockable ABS Side-Mount Storage for Chevrolet Silverado & GMC Sierra 2007–2019 |  |
1. RealTruck / extang Trifecta 2.0 Trifecta Toolbox Soft Folding Tonneau Cover
| Fits | 2014–2019 Chevy/GMC Silverado 1500; 2014–2018 2500/3500HD 6'7" bed |
|---|---|
| Material | Vinyl |
| Lock Type | Key |
| Style | Trifecta Toolbox 2.0 |
The Trifecta 2.0 Toolbox is a preassembled soft folding tonneau cover engineered to fit over a pickup bed with a toolbox installed, giving secure weather protection and a low-profile appearance. Installation is tool-free and fast: square the cover on the bed, rotate the cab clamps to lock the front, and use the EZ-Lock tailgate clamps to secure the rear. Operation is simple—release the tailgate clamps and fold the cover to access the bed. The leather-grain vinyl tarp repels water, resists fading, and stretches for a tight fit to reduce wind flap. Because it arrives assembled and uses clamp mounting, it removes in minutes when you need full bed access. On the downside, clamp tensioning can be physically demanding to set correctly and removing or reinstalling the cover takes some effort when you need to carry large items. Fit is vehicle-specific so ordering the correct size for your GMC Sierra configuration is essential. For buyers prioritizing dependable, low-friction protection for tools and cargo, this is a practical choice.
Best for: Reliability-focused buyers who want a simple, factory-quality-looking cover that keeps tools and cargo dry and secure with minimal fuss during normal daily use.
Less Ideal for: Buyers who frequently need full, unobstructed bed access for oversized loads or who prefer a hard folding cover for heavier-duty security should look elsewhere.
- Preassembled design for very fast, tool-free installation
- Designed to work with a bed toolbox and factory-style clamp mounting
- Leather-grain vinyl tarp that sheds water and resists fading
- EZ-Lock tailgate clamps for quick access and a secure closed position
- Clamps require strong hand force and repeated tightening to achieve a secure seal
- Soft folding design can be cumbersome to remove and reinstall when hauling oversized items
Verdict A fast-install, toolbox-compatible soft folding tonneau that prioritizes reliable weather protection and easy daily use for GMC Sierra owners who need dependable cargo coverage.
2. Nilight Left-Side Swing-Out Truck Bed Tool Box for GMC Sierra 1500 (2019–2020)
| Fitment | GMC Sierra 1500 2019–2020 driver side |
|---|---|
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Capacity | 6.6 Gallons |
| Closure Type | Flip Top with key lock |
| Opening Mechanism | Hinge, swing-out |
This Nilight swing-out toolbox is built to bolt to the left wheel-well of a 2019–2020 GMC Sierra 1500 and gives you a compact, weather-resistant spot for tools, tie-downs, and small gear. The box swings nearly 180 degrees for easy access from the side of the truck and includes a removable tray to organize small parts. Made from ABS with moisture-proof sealing strips, it is lightweight and resists rain and sun exposure better than bare plastic. Installation is intended to be quick and mostly drill-free using supplied brackets and basic hand tools, and the keyed lock offers some theft deterrence for parked trucks. Limitations to expect are the modest 6.6 gallon capacity that fills quickly, occasional alignment or latch adjustments reported by owners, and mixed build-quality reports on the lock and hardware that may prompt using heavier fasteners or rivet nuts for a more secure fit. For budget buyers it delivers good utility if you accept its compact size and do minor installation tuning.
Best for: Budget-conscious Sierra owners who want an affordable, compact way to free up interior or bed space and prefer a quick, mostly noninvasive install.
Less Ideal for: Drivers who need large-capacity bed storage, heavy-duty theft resistance, or a fully waterproof, long-term commercial-grade toolbox should consider larger or metal alternatives.
- Swing-out design gives near 180 degree access for easy side loading
- Weatherproof ABS construction with sealing strips protects contents from rain and sun
- Included removable tray helps organize small parts and accessories
- Designed to install without drilling using supplied brackets and basic tools
- Limited internal volume at 6.6 gallons so it fills quickly
- Some users report latch alignment issues and variable lock/hardware quality
Verdict An inexpensive, easy-to-install swing-out toolbox that adds convenient side access storage to a 2019–2020 GMC Sierra 1500 but offers only modest capacity and mixed hardware quality.
3. Nilight Truck Bed Tool Box Set for Chevrolet Silverado & GMC Sierra (Driver and Passenger Side)
| Fitment | GMC Sierra 1500/2500/3500 (listed years) |
|---|---|
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Capacity | 6.6 Gallons per box |
| Special Feature | Lockable |
| Opening Mechanism | Hinge / Swing-out |
These Nilight swing-case tool boxes mount to the wheel wells of GMC Sierra trucks to reclaim interior space and keep small gear organized. Each box swings out nearly 180 degrees on hinges for easy access to straps, hand tools, and small parts while leaving the main bed area free for larger cargo. Built from ABS with moisture-proof sealing strips, the boxes are lightweight and resist rain and sun exposure, and they include a removable tray for small items and a keyed lock for basic theft deterrence. Installation is drill-free using the included brackets and common hand tools, though a few reviewers reported minor alignment or latch adjustments during setup. The lid is water repellent but not fully waterproof, so electronics or items requiring full submersion protection should be stored elsewhere. Fitment is specific to GMC Sierra 1500/2500/3500 models listed, and buyers seeking heavier-duty metal boxes or maximum security may prefer a steel option instead.
Best for: Risk-averse mainstream buyers who prioritize a straightforward, factory-like storage solution that frees up interior space and installs with minimal modification.
Less Ideal for: Buyers who need fully waterproof storage, maximum theft resistance, or heavy-duty metal construction should consider steel toolbox options or bolted security systems instead.
- Swing-out design provides nearly 180 degree access for quick retrieval of tools and straps.
- ABS construction keeps weight low while offering weather resistance from rain and sun.
- Includes removable internal tray to separate small parts and keep the main compartment organized.
- Key-locking lid provides basic security and theft deterrence when used with a cover or canopy.
- Drill-free installation uses supplied brackets and basic hand tools for a faster fit-up.
- Not fully waterproof; lid is water repellent but may allow moisture under heavy exposure.
- Some units require minor latch or striker adjustments for proper alignment.
- ABS and supplied hardware are less theft-resistant than heavy-gauge steel alternatives.
Verdict A lightweight, easy-to-install swing-out toolbox set that frees bed and interior space on GMC Sierra trucks but trades off full waterproofing and heavy-duty security.
4. GRAND ORANGE Lockable Truck Bed Storage Box Pair for Chevy Silverado/GMC Sierra (2007–2019)
| Material | Acrylonitrile Butadiene Styrene (ABS) |
|---|---|
| Compatibility | Chevy Silverado / GMC Sierra 2007–2019 models as listed |
| Opening mechanism | Twist latch with quick-release |
| Water resistance level | Waterproof |
| Included components | Pair of left and right side storage boxes |
These lockable truck bed storage boxes provide a slim, weatherproof way to add organized storage to the rear left and right sides of compatible Silverado and Sierra trucks. Made from ABS plastic, the boxes mount with brackets and rivet nuts and swing out for tailgate access so you can reach tools without climbing into the bed. Notable features include a moisture seal, single-point twist latch with lock, a quick-release latch and a small tray in the lid for loose items. The low-profile design preserves usable bed floor while offering concealed storage for hand tools, straps, and small gear. Installation requires drilling and bracket work and the product recommends professional fitting if you are not comfortable with drilling and tapping; some buyers reported fiddly instructions and occasional need to adjust holes for a proper fit. Capacity is limited compared with larger full-width toolboxes and the stated 75 lb limit can be affected by road forces, so keep heavier items to a minimum. For everyday organization and theft protection this pair is a practical, space-saving upgrade for the specified trucks.
Best for: Practical optimizers who want to add secure, out-of-the-way storage to their GMC Sierra without sacrificing bed floor space and who prefer a cost-efficient, functional solution over larger, heavier toolboxes.
Less Ideal for: Drivers who need high-capacity, heavy-duty tool storage or plug-and-play fitment without any modification should consider full-width metal toolboxes or dealer-fit options instead.
- Slim profile preserves bed floor and works with tonneau covers
- Waterproof moisture seal keeps stored items dry in rain and snow
- Lockable twist-latch and quick-release mechanism provide basic theft deterrence and easy access
- Swing-out design allows access without climbing into the bed
- Requires drilling and bracket installation which may be tricky for inexperienced installers
- Not intended for heavy loads; practical capacity is lower than the listed maximum due to driving forces
- Fitment can be affected by bed liners or non-factory bed contours and may need modification
Verdict A budget-friendly, low-profile storage pair that adds weatherproof, lockable organization to Silverado and Sierra beds but needs careful installation and is not for heavy loads.
5. YHTAUTO Swing Truck Bed Toolboxes (set of 2) — Lockable ABS Side-Mount Storage for Chevrolet Silverado & GMC Sierra 2007–2019
| Compatible Vehicles | GMC Sierra 2007–2019 (fits specified bed styles) |
|---|---|
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Water Resistance | Waterproof (gasketed lid) |
| Number of Items | 2 (driver and passenger side) |
These YHTAUTO swing toolboxes attach to the inside wheel well area of a GMC Sierra and pivot outward for quick access to tools without losing bed cargo space. Constructed from ABS plastic, the boxes are light and resist UV and most weather exposure while the gasketed lid and latch aim to keep out rain and dust. Each unit includes a removable internal tray for small parts and a locking latch for security. Installation uses supplied eyelets and brackets and is straightforward for a competent DIYer, though instructions are basic and the supplied self-tapping hardware may need stronger fasteners for a permanent fit. Capacity is modest so they are best for hand tools, straps, and small emergency gear rather than heavy sockets or power tools. Some owners report occasional water intrusion and hinge wear under heavier loads, so expect to monitor mounts and avoid pushing the boxes to their maximum static load. For Sierra owners wanting tidy, out-of-the-way storage these deliver convenient access and a low-profile footprint with a few practical limits.
Best for: A balanced all-round buyer who values practical, space-saving storage and easy access to frequently used tools on a GMC Sierra without sacrificing bed floor space.
Less Ideal for: Not a good choice for users who need heavy-duty, high-capacity metal toolboxes or who plan to store heavy power tools and large equipment in the bed.
- Side-mount swing design provides near-180º access without using bed floor space
- Lockable lids and removable internal tray help organize and secure small items
- ABS construction is lightweight, UV-resistant, and weather-durable for typical outdoor use
- Works with most tonneau covers and folds up when not needed to preserve cargo clearance
- Modest load capacity not intended for heavy tools or repeated heavy use
- Included self-tapping fasteners are low quality and some users replace them for durability
- Some reports of water ingress and plastic hinge wear over long-term or high-load use
Verdict Convenient, low-profile swing toolboxes that tidy small gear in a GMC Sierra but are best for light loads and occasional DIY reinforcement of the mounting hardware.
Choosing the Right GMC Sierra Truck Toolbox: Key Factors to Consider
Bed Fit and Compatibility
Ensuring the toolbox fits the GMC Sierra bed is critical because incorrect dimensions can block tailgate operation or prevent proper mounting. Measure the bed width, length, and any wheel well intrusions before choosing a unit. Consider whether you need a full-width model, a cross bed option that sits behind the cab, or a low-profile box that clears rear window sightlines.
Compatibility also affects how the toolbox mounts. Some designs rely on the factory stake pockets, while others use clamp or bolt-on systems. Confirm that the selected mounting approach works with the Sierra bed rail profile to avoid drilling where possible and maintain bed integrity.
Material and Corrosion Resistance
The toolbox material determines longevity and maintenance. Aluminum offers corrosion resistance and lighter weight, while steel can provide greater impact resistance but may require protective coatings. Look for finishes that resist chips and scratches and pay attention to seam construction because gaps invite moisture.
If you frequently operate in wet or coastal environments, prioritize materials and coatings rated for corrosion protection. Sealed welds and anodized or powder-coated surfaces help reduce long-term degradation.
Mounting Method and Installation
Mounting method affects security, bed preservation, and installation complexity. Clamp-on systems are often quicker to install and removable without drilling, while bolt-on systems can offer a more permanent attachment. Some cross bed styles use a combination of clamps and bolts for extra stability.
Installation difficulty varies by design. Consider whether you need professional installation or can complete the work with basic tools. Review how the toolbox interfaces with bed rail covers, tie-down points, and rail caps to ensure a snug, rattle-free fit.
Security and Locking
A lockable truck box helps protect tools and equipment from theft and unauthorized access. Evaluate the lock type, whether it is keyed or keyed-alike capable, and how the locking mechanism is protected from the elements. Internal hasps and reinforced lids reduce leverage points that thieves can exploit.
Also consider how the lock affects daily use. A well-designed lock should be easy to operate with gloved hands and integrate with the lid so it does not interfere with sealing or cause water ingress when closed.
Weather Sealing and Drainage
Weatherproofing matters because standing water and moisture accelerate corrosion and damage stored items. Look for continuous gasket seals along lid edges and channels that divert water away from seams. Positive lid engagement and compression seals reduce dust ingress and water pooling.
Drainage features such as weep holes or internal channels can help expel any water that gets inside. Consider how the lid design sheds rain and how the seal performs under repeated opening and closing to prevent mildew and tool damage.
Internal Organization and Access
Organization features make the toolbox more functional during daily use. Shelves, removable trays, and partition options help separate small parts from larger tools and speed up retrieval. A lid-mounted tray or under-lid storage can free up main compartment space for bulky items.
Access style matters too. Side-opening lids, top-opening lids, or pass-through compartments change how you reach tools from the tailgate or cab. Think about which access pattern fits your workflow and whether you need quick reachability of frequently used items.
FAQ
Will a cross bed toolbox block access to the GMC Sierra tailgate?
A properly sized cross bed toolbox should leave enough clearance for the tailgate to open. Measure the distance from the cab to the tailgate hinge and choose a model designed for the Sierra bed length. Some cross bed units sit directly behind the cab and do not interfere, while others may require careful positioning to avoid blocking the tailgate.
What is the easiest mounting method for a toolbox on a GMC Sierra?
Clamp-on systems are often the easiest to install because they do not require drilling and can be tightened to the bed rail. Bolt-on mounts provide a more permanent attachment but usually need drilling or access to the underside of the bed. The easiest method depends on whether you prefer a removable solution or a fixed installation.
How important is weatherproofing for a truck toolbox?
Weatherproofing is usually important, especially if you store tools that can rust or electronics that are sensitive to moisture. Good gaskets, tight lid engagement, and drainage features reduce water intrusion. If you frequently expose the bed to rain or wash the truck, prioritize a model with proven seals and water management.
Are aluminum toolboxes better than steel for a GMC Sierra?
Aluminum typically offers lighter weight and superior corrosion resistance, which can be advantageous in wet or salty conditions. Steel can be stronger against impacts but usually needs protective coatings to resist rust. The best choice depends on your priorities for weight, durability, and long-term maintenance.
Can I keep a toolbox in the bed full-time without damaging the truck?
Keeping a toolbox in the bed permanently is common, but proper mounting and weight distribution matter. Ensure the mounting method is secure and that the load does not exceed the vehicle or bed rail capacity. Regularly inspect mounts and seals to prevent damage and address any corrosion early.
How We Chose the Best GMC Sierra Truck Toolbox
We prioritized products that are specifically offered in configurations compatible with the GMC Sierra bed dimensions and common mounting points. Key evaluation criteria included material and corrosion resistance, secure mounting methods, ease of installation, lock and security features, weather sealing, and internal organization options. We also considered overall build quality and how well the design accommodates pass-through access and tool access from the cab or sides. Units that required extensive bed modification or did not list clear fitment guidance were excluded. The shortlist reflects items that balance durability, straightforward mounting, and sensible storage features suited to frequent use on a GMC Sierra.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right GMC Sierra truck toolbox comes down to balancing fitment, durability, and access. Prioritize a toolbox that matches your bed dimensions and mounting preferences, offers reliable weather sealing, and provides the organization you need for everyday tasks. Tradeoffs typically involve weight versus corrosion resistance and permanence versus removability, so pick the combination that best suits how you use the truck.
Explore More:
- Check out all GMC Sierra parts & accessories
- Explore Exterior Accessories
- Browse all Accessories
