Shop 6-inch running boards and nerf bars for listed 2020-2027 GMC Sierra 2500HD applications by matching the exact model year and cab configuration on the individual product page. A 6-inch width describes the step profile; it does not establish fitment.
2027 availability: This collection is reserved for confirmed 2027 GMC Sierra 2500HD products. Compatible products will be added as they become available in the coming months. Until then, check the individual product page for the exact supported model years before ordering. Current products in this collection are labeled through 2026.
Choose the Right 6-Inch Sierra 2500HD Step
Confirm Crew Cab, Double Cab, or Regular Cab first, then compare step surface, profile, material, finish, dimensions, brackets, package contents, and installation notes.
Related Sierra 2500HD Collections
2020-2027 GMC Sierra 2500HD 6-Inch Running Boards FAQ
Does every product fit every 2020-2027 Sierra 2500HD?
No. Confirm the exact supported model years and Crew Cab, Double Cab, or Regular Cab application on the product page.
Do the current products establish 2027 fitment?
No. Current products are labeled through 2026. Use only a listing that explicitly includes 2027 for a 2027 truck.
Can different cab configurations share the same 6-inch boards?
Do not assume so. Cab dimensions can change board length, brackets, mounting points, and step position.
What should I verify before installation?
Review exact year and cab fitment, package contents, included brackets or hardware, dimensions, exclusions, and installation notes.
Aftermarket trademark disclaimer: People Auto Parts is not affiliated with, sponsored by, or endorsed by General Motors LLC. GMC, Sierra, Sierra 2500HD, GM, and related names and trademarks belong to their respective owners and are used only to identify compatible applications. Products are aftermarket parts unless an individual listing expressly states otherwise.
