2015-2019 GMC Sierra 3500HD Bed Accessories

Bed accessories for the 2015-2019 GMC Sierra 3500HD fit both the 6'6" standard bed and 8' long bed configurations. Stock includes BAK, UnderCover, and DECKED options covering tonneau covers, bed liners, drawer systems, and tailgate assists for single-rear-wheel and dually trims.

Will these accessories work with a spray-in bed liner already installed? Yes. Every tonneau and bed storage system here clamps to the bed rails without drilling and clears standard spray-in liners like LINE-X and Rhino.

Verified fitment for your Sierra 3500HD, no guesswork at checkout.