2020-2025 GM 2500HD/3500HD 6.6L L5P Duramax Tonneau Covers

Protect your truck bed and the gear inside from unwanted attention and inclement weather by adding a premium tonneau cover to your 2020-2025 GM 2500HD/3500HD 6.6L Duramax. We offer a wide selection of tonneaus to suit your specific needs, from basic roll-up covers to advanced, hands-free retractable models. So, whether you're looking for quick and easy bed access or maximum protection for your valuables, there's a bed cover that’s perfect for your truck. Be sure to also check out our selection of Roof Racks and Bed Racks to further improve the cargo-carrying capabilities of your GM 2500HD/3500HD build. GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.