Shop 6-inch running boards and nerf bars for listed 2020-2027 GMC Sierra 3500HD applications by matching the exact model year, cab configuration, and any rear-wheel application notes on the individual product page. A 6-inch width does not establish fitment.
2027 availability: This collection is reserved for confirmed 2027 GMC Sierra 3500HD products. Current products in this collection are labeled through 2026. Use only an individual product listing that explicitly includes 2027 for a 2027 truck; collection architecture does not extend SKU-level fitment.
Choose Your Cab Configuration
Choose the Right 6-Inch Sierra 3500HD Step
Confirm Crew Cab, Double Cab, or Regular Cab first and review any rear-wheel restriction stated on the listing. Then compare step surface, profile, material, finish, dimensions, brackets, package contents, exclusions, and installation notes.
Related Sierra 3500HD Collections
Frequently Asked Questions
Does every product fit every 2020-2027 Sierra 3500HD?
No. Confirm the exact year, cab configuration, and any rear-wheel restriction on the individual product page before ordering.
Do the current products establish 2027 fitment?
No. Current products are labeled through 2026. Use only a product 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 and vehicle configuration can change board length, brackets, mounting points, and step position.
What should I verify before installation?
Review exact year and cab fitment, rear-wheel application where stated, package contents, included brackets or hardware, dimensions, exclusions, and installation notes for the exact kit.
Aftermarket trademark disclaimer: People Auto Parts is not affiliated with, sponsored by, or endorsed by General Motors LLC. GMC, Sierra, Sierra 3500HD, 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.
