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Whether you use your truck for work, on your farm, or just down the Highway, Undercover has the perfect tonneau cover four you GMC Sierra. From the original Classic bed cover to the new Ultra Flex, there is a tonneau cover for any budget.

The Classic is the flagship cover, and is made of ABS plastic. Two gas hydraulic struts hold up the cover allowing you access to your gear. Undercover coats their covers with a UV protectant, that prevents fading. If you want a sleeker look, check out the Undercover SE tonneau. With raised ridges and a spoiler, it creates a styled look for your truck.
Undercover has been making ABS Polymer covers for over a decade. They were the first with this technology which provided the worlds first light weight (under 60 lbs) truck bed cover that was also strong enough to hold hundreds of pounds and tough enough to resist the scratches and scuffs that a fiberglass tonneau can't.
The Flex Tonneau for your GMC Sierra, with it's tri-fold design allows you to modify the cover, to haul those big loads. So, don't delay. Get an Undercover for your GMC truck today and choose from the Classic that started it all, the stylish SE or a folding tonneau.
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Undercover Classic Tonneau Cover for GMC Sierra GMC Sonoma Undercover Classic Tonneau Cover
compare at: $959.00
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Our Base Price: $760.00


(4)
compare at: $959.00
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Our Base Price: $760.00

GMC Sierra Undercover Classic Truck Bed Tonneau Cover GMC Sonoma Undercover Classic Tonneau Cover
GMC Canyon Undercover Classic Tonneau Cover GMC Sierra Swing Case Tool Box
compare at: $959.00
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Our Base Price: $760.00


(1)
compare at: $249.95
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Our Base Price: $174.00

Undercover Classic Hard Bed Cover made for the GMC Canyon Sierra rado Swing Case
GMC Canyon Swing Case Tool Box GMC Sierra Undercover SE Tonneau Cover
compare at: $249.95
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Our Base Price: $174.00

compare at: $959.00
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Our Base Price: $760.00


(2)
Canyon Swing Case GMC Sierra Undercover SE Hard Tonneau Cover
GMC Sierra SE Smooth Paintable Cover GMC Sierra Flex Cover
compare at: $959.00
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Our Base Price: $760.00

compare at: $924.00
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Our Base Price: $725.00

Sierra Paintable Undercover SE Tonneau Cover GMC Sierra Undercover Flex Hard Folding Tonneau Cover
GMC Canyon Flex Cover Undercover Elite Tonneau Cover for GMC Sierra
compare at: $924.00
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Our Base Price: $725.00

compare at: $1,287.43
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Our Base Price: $1,000.00

GMC Canyon Undercover Flex Folding Tonneau Cover Undercover Elite Tonneau Cover for the GMC Sierra
Undercover Elite FX Painted Tonneau Cover for GMC Sierra Undercover Elite Tonneau Cover for Chevy Colorado/GMC Canyon
compare at: $1,608.85
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Our Base Price: $1,400.00

compare at: $1,287.43
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Our Base Price: $1,000.00

Undercover EliteFX Painted Tonneau GMC Sierra Chevy Colorado/GMC Canyon Elite Undercover Hard Truck Bed Cover
Canyon Undercover SE Smooth Paintable Cover GMC Canyon Matte Black Ultra Flex Cover
compare at: $959.00
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Our Base Price: $760.00

compare at: $999.00
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Our Base Price: $840.00

Canyon Paintable Undercover SE Tonneau Cover Undercover Ultra Flex Tri Fold Tonneau Cover for GMC Canyon Pickups
Chevy Colorado Matte Black Ultra Flex Cover GMC Sierra Matte Black Ultra Flex Cover
compare at: $999.00
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Our Base Price: $840.00

compare at: $999.00
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Our Base Price: $840.00

Undercover Ultra Flex Folding Tonneau Cover for Chevy Colorado Undercover Ultra Flex Black Folding Bed Cover for GMC Sierra
GMC Sierra 2500 Matte Black Ultra Flex Cover
compare at: $999.00
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Our Base Price: $840.00

Undercover New Ultra Flex Hard Folding Truck Bed Cover for GMC Sierra 2500