2020-2025
2015-2019
2007-2014
Installation Time
(approx) 15 Minutes
Difficulty Level:
Simple installation for anyone.
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Find Bed Covers & Tonneau Covers for your Sierra 3500
UnderCover Elite Smooth Hinged Tonneau Cover; Unpainted (20-25 Sierra 3500 HD w/ 6.90-Foot Standard Box)Find parts that fit my vehicle
Item SHG1960
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Our Price
$1,349.99 each
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- To Learn How to Measure Your Bed Click Here
- Elite Smooth Hinged Tonneau Cover
- LED Lighting System for Supreme Illumination
- Pull Strap for Closing Assistance
- Lanyard for Easy Cargo Access and Unobtrusive Storage
- Aesthetically Enhances with Carpet-Lined Underside
- ABS Composite Manufacture and Lightweight Design
- Unpainted With Smooth Gray Primer
- Easy Installation
- Three-Year Manufacturer’s Warranty
- Fits the 2020-2025 GMC Sierra 3500 HD with Standard Box
| Brand | UnderCover |
| Tonneau Cover Type | Hinged |
| Tonneau Cover Installation | Clamp On |
| Tonneau Cover Locking | Keyed Lock |
| Toolbox Compatibility | Not Toolbox Compatible |
Description
Secures and Protects Your Cargo. With the redesigned UnderCover Elite Smooth Hinged Tonneau Cover; Unpainted, you will have one of the sharpest-looking and most practical items of its kind on the market. The Elite Smooth cover now has a premium carpet-lined underside to aesthetically enhance the look of your truck, the new LED lighting system is brighter than ever before and illuminates the entire bed for added convenience, and your cargo will always be supremely protected from the elements and sealed in your truck bed because of its full perimeter seal and fit. The cover also includes a lanyard handy tool to allow you to not only easily access your cargo when needed, but also neatly store it out of the way when not in use. There is a handy pull strap for assisting you in closing the cover.
Quality Lightweight Construction. The tonneau cover is crafted from ABS composite material for not just a perfect fit, but also long-lasting sturdiness against the harshest driving conditions. In addition, it weighs in at only 58 pounds, making it the lightest hard-shell tonneau cover in the industry.
Easy Installation. With included installation hardware, this tonneau cover can be installed within 15 minutes. It does not require any drilling or modifications to your Sierra truck. Although this cover has a smooth gray primer, it must be painted with automotive paint before you install it.
Warranty. UnderCover, Inc. warrants the ABS polymer structure of the tonneau cover to be structurally free from defects in material and workmanship for 3 years from the retail date of your purchase. Some exclusions may apply; please see manufacturer’s warranty for details.
Application. The UnderCover Elite Smooth Hinged Tonneau Cover; Unpainted is designed to fit the 2020-2025 GMC Sierra 3500 HD models with the Standard Box.
Technical Note. Not sure of your bed size? Click here for an instructional video explaining how to measure your bed length.
Fitment:
- 2020 GMC Sierra 3500
- 2021 GMC Sierra 3500
- 2022 GMC Sierra 3500
- 2023 GMC Sierra 3500
- 2024 GMC Sierra 3500
- 2025 GMC Sierra 3500
UnderCover UC1228S
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Tonneau Cover
4.8
Reviews of UnderCover Exterior Products (428)
Reviews of UnderCover Exterior products have an average rating of 4.8 out of 5
Questions & Answers
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Will It Fit My Sierra 3500
- 6.6L V8 - 20, 21, 22, 23, 24, 25
- 6.6L V8 Duramax - 20, 21, 22, 23, 24, 25
