Shop aftermarket 6-inch running boards with an OEM-style, factory-inspired appearance for GMC Sierra 3500HD applications in this 2020-2027 collection. Confirm the exact model year and cab configuration on the individual product page before ordering.
2027 availability: This collection is reserved for confirmed 2027 GMC Sierra 3500HD 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.
Fitment First
The current live products reviewed are labeled for 2020-2026 Crew Cab, Double Cab, and Regular Cab applications. Do not use the collection title as product-level 2027 confirmation, and do not substitute one cab application for another unless the individual listing specifically supports both.
Compare OEM-Style Running Boards
This collection currently includes 6-inch black and stainless-finish running boards. “OEM style” describes a factory-inspired appearance theme; these are aftermarket products unless an individual listing expressly states otherwise.
Related GMC Sierra 3500HD Collections
FAQ
Do the current products confirm 2027 fitment?
No. The current live products reviewed are labeled through 2026. For a 2027 Sierra 3500HD, choose only a product page that explicitly lists 2027.
How do I verify fitment?
Confirm the exact model year and cab configuration, then use the individual product page as the controlling fitment source.
Are the cab applications interchangeable?
Do not assume so. Select a board specifically listed for the truck’s cab and review its stated dimensions, package contents, exclusions, and installation information.
What does OEM style mean here?
It describes a factory-inspired appearance theme. It does not mean the products are genuine GMC or General Motors parts.
Aftermarket trademark disclaimer: People Auto Parts is not affiliated with, sponsored by, or endorsed by General Motors LLC. GMC, Sierra, GM, OEM, and related trademarks belong to their respective owners and are used only to identify compatible applications or appearance style. Products are aftermarket parts unless an individual listing expressly states otherwise.
