Shop 6-inch running boards and nerf bars for listed 2020-2027 GMC Sierra 2500HD Double Cab applications by matching the exact supported model years on the individual product page. Current qualifying products in this collection are labeled through 2026.
2027 availability: This collection is reserved for confirmed 2027 GMC Sierra 2500HD products. Compatible products will be added as they become available. Until then, use only a product page that explicitly includes your exact model year.
Fitment first: Double Cab, Crew Cab, and Regular Cab applications are not interchangeable. Verify the exact cab, dimensions, brackets, package contents, and exclusions before checkout.
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Frequently Asked Questions
Do current products establish 2027 fitment?
No. Current qualifying products are labeled through 2026. Use only a listing that explicitly includes 2027 for a 2027 truck.
Will every item fit every 2020-2026 Sierra 2500HD Double Cab?
No. Confirm the exact supported model years and Double Cab application on the individual product page.
Does 6-inch establish fitment?
No. The 6-inch description refers to the listed step or board style. Exact model, year, cab, brackets, and exclusions still matter.
Are these genuine GMC OEM parts?
Unless an individual product page explicitly states otherwise, these are aftermarket parts selected for the listed applications.
Aftermarket trademark disclaimer: People Auto Parts is not affiliated with or endorsed by General Motors or GMC. GMC and Sierra names are used only to identify compatibility. Unless a product page explicitly states otherwise, items in this collection are aftermarket parts and are not genuine OEM components.
