Talk to a Sierra 2500 Sales Tech
M-F 8:30A-11P, Sat-Sun 8:30A-9P

UnderCover Ultra Flex Tri-Fold Tonneau Cover; Black Textured (15-19 Sierra 2500 HD)

Item HG3711
Verify parts fit and get product recommendations.
Sierra 2500 Sales Techs: Connect Now M-F 8:30A-11P, Sat-Sun 8:30A-9P
Our Price

$1,199.99 - $1,249.99

FREE Shipping + $199.00 Oversized Item Fee Market Price $1,403.99 You Save 15% ($204.00) Up to 10% off for Military & First Responders! See Details

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

      Video Review & Installation

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features & Specs

      • Ultra Flex Tri-Fold Tonneau Cover
      • Foldable Access
      • Black Textured Finish
      • Aluminum Automatic Latching Panels
      • Dual-Action Tailgate Seal
      • Low-Profile Design
      • Easy Installation with No Drilling Required
      • Backed Up by a 5-Year Warranty
      • Integrated FRP Composite Material
      • Engineered for all 2015-2019 GMC Sierra 2500 HD Models


      Low-Profile. Protect and stylize your 2015-2019 GMC Sierra 2500 HD with the UnderCover Ultra Flex Tri-Fold Tonneau Cover. Boasting a sleek, low-profile design and a striking black textured finish, this cover seamlessly blends function with aesthetics. Crafted from robust integrated FRP composite material, it ensures long-lasting durability.

      Foldable Access. To add more, its foldable access offers convenience, while aluminum automatic latching panels provide added security. The dual-action tailgate seal ensures maximum protection against the elements.

      Installation. Putting this Ultra Flex Tri-Fold Tonneau Cover on your ride is easy and requires no drilling.

      Warranty. There is a 5-year warranty on this product.

      Application. This UnderCover Ultra Flex Tri-Fold Tonneau Cover fits all 2015-2019 GMC Sierra 2500 HD Models.


      • 2015 GMC Sierra 2500
      • 2016 GMC Sierra 2500
      • 2017 GMC Sierra 2500
      • 2018 GMC Sierra 2500
      • 2019 GMC Sierra 2500

      UnderCover UX12019


      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Flex Hard Folding Cover
      • (1) Driver Side Rail, Pre-Assembled
      • (1) Passenger Side Rail, Pre-Assembled
      • (2) Drain Tubes
      • Mounting Hardware

      Customer Reviews (13)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 2500

        • 6.0L V8 - 15, 16, 17, 18, 19
        • 6.6L V8 Duramax - 15, 16, 17, 18, 19