2021 GMC Sierra 3500 HD Tonneau Covers

Tonneau Covers that fit your 2021 GMC Sierra 3500 HD. Shop Retrax, Extang, Access and more. Every part is checked against your vehicle before it ships.

• RetraxRetrax 20-23 Chevy/GMC Silverado/Sierra 2500/3500HD 6.9ft. Bed (2022 LTD Models ONLY) Retrax EQMPN rtxEQ0484$2899.99In stock
• ExtangExtang 2020 Chevy/GMC Silverado/Sierra (6 ft 9 in) 2500HD/3500HD XceedMPN ext85653$1149.99In stock
• AccessAccess LOMAX Tri-Fold Cover 2020+ Chev/GMC Full Size 2500 3500 6ft 8in Standard Bed - Matte BlackMPN accB1020099$1200.20In stock
• LEER GroupLEER 2020+ GM Silverado SR250 69GS20 6Ft9In HeavyDuty Tonneau Cover - Rolling Full Size Standard BedMPN lee610320$527.25In stock
• ExtangExtang 07-13 Chevy/GMC Silv/Sierra (8ft) / 14 2500HD/3500HD (w/o Track Sys) Solid Fold 2.0 ToolboxMPN ext84655$1399.99In stock