Truck Accessories for GMC Sierra
Heavy-Duty GMC Sierra Truck Accessories Built for Work
A GMC Sierra doesn't stay stock for long once it's put to work. Between job sites, towing, and daily hauling, most Sierra owners end up outfitting their truck with gear that can actually keep up. That's where a lot of off-the-shelf accessories fall short. Universal-fit parts are built to fit everything reasonably well, which usually means they fit nothing particularly well.
Wickum Weld takes a different approach. We manufacture tool boxes, headache racks, bed racks, and flatbeds for the Sierra out of our facility in Vancouver, WA, building each one from marine-grade aluminum to the actual dimensions of the truck. Nothing here is imported or mass-produced. Every accessory here is manufactured to order.
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Maverick Crossbox
A crossover toolbox manufactured from marine-grade 5052 aluminum, built for truck beds that need dependable, secure storage. Manufactured for tradespeople and contractors, it delivers organized storage and fast access to gear without sacrificing valuable bed space.
Shop MaverickAdventure Collection
Light truck cab racks and accessories manufactured for personal trucks, ranch work, and off-road use across the region. Built from marine-grade 6061 aluminum for strength without unnecessary weight.
Shop AdventureCommercial Collection
Mid-duty flatbeds, toolboxes, and cab racks manufactured for contractors, fleet operators, and service trucks running daily routes. Built from durable aluminum, this collection is manufactured to handle heavy daily use while keeping trucks reliable, organized, and ready for the next job.
Shop CommercialHeavy-Duty Collection
Class 8 cab racks, Enclosures and Drom Units manufactured for over-the-road carriers and heavy trucking operations. Our Class 8 Cab Racks run 65-68 inches tall and 70-96 inches wide, with window cutouts available in 27" width or full rack width.
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Sierra Tool Box (Maverick Crossbox)
The Maverick Crossbox is where most Sierra owners start. Manufactured from marine-grade 5052 aluminum, it's designed as a low-profile crossbox that sits flush across the bed rails instead of eating into the space you need for hauling. Tools stay secure and dry, and the bed stays usable.
Standard sizing covers most Sierra bed configurations, but if your setup calls for specific notches, cutouts, or a different footprint, custom builds are available.
Sierra Headache Rack (The Wickum Rack)
The Wickum Rack brings marine-grade 6061 aluminum construction to the Sierra cab, built around the truck's actual cab dimensions rather than adapted from a generic mold. That means it mounts cleanly and sits flush without the shifting or rattling that comes with a universal-fit rack.
What sets it apart is the Three Piece Clamp system running through the frame. Lights, panels, and accessories attach to the clamps and can be moved to a different position on the rack whenever the job calls for it, rather than staying fixed in one predrilled spot.
Rack details:
• Marine-grade 6061 aluminum, 1/4" thick foot
• Panel options: Oval Panel, Louvered Panel, or Open Center
• Three Piece Clamp accessory mounting system, repositionable anywhere on the frame
• Hand crafted in our Vancouver, WA manufacturing facility
Sierra Flatbed Conversions
For Sierra owners running a flatbed, Wickum manufactures aluminum flatbeds through our Commercial Collection, built from marine-grade 5000- and 6000-series aluminum. There's no steel option in the lineup. Aluminum keeps weight down without giving up the corrosion resistance a flatbed needs over years of use.
Deck length, headboard configuration, and mounting layout are all manufactured to order around how the truck is actually going to be used.
Why GMC Sierra Owners Choose Wickum Weld
• American-made — manufactured in Vancouver, WA, not imported
• Marine-grade aluminum — durable without adding unnecessary weight
• Modular by design — the Three Piece Clamp system adapts as your setup changes
• Hand crafted, not mass-produced — every accessory is manufactured to spec
Get Your GMC Sierra Outfitted Right
Ready to outfit your GMC Sierra? Contact Wickum Weld or call (360) 837-0706 to get started.
