Shop 2007-2014 GMC Sierra 3500HD Extended Cab running boards and nerf bars by matching the exact model year, Extended Cab configuration, and product application shown on the individual product page. Some live 5-inch and 6-inch listings end at 2013, so a 2014 truck requires a product page that explicitly includes 2014.
Quick Fitment Check
- Confirm the truck is a GMC Sierra 3500HD Extended Cab.
- Match the exact model year on the product page; do not assume every collection item reaches 2014.
- Do not substitute Crew Cab or Regular Cab products based on similar width, finish, or appearance.
- After fitment is confirmed, compare 5-inch, 6-inch, aluminum, diamond-step, and drop-step designs only where listed.
- Review dimensions, brackets or hardware, package contents, exclusions, and installation notes before checkout.
Shop Related Sierra 3500HD Collections
2007-2014 GMC Sierra 3500HD Extended Cab FAQ
Does every product on this page fit a 2014 Sierra 3500HD Extended Cab?
No. Some current 5-inch and 6-inch listings end at 2013. For a 2014 truck, use only a product page that explicitly includes 2014.
Are Extended Cab products interchangeable with Crew Cab or Regular Cab products?
Do not assume so. Choose a product specifically listed for Extended Cab.
How should I compare 5-inch, 6-inch, and other styles?
Verify exact year and cab first, then compare the listed stepping surface, width, profile, dimensions, material, finish, and package contents.
What should I verify before installation?
Review exact supported years, Extended Cab application, included brackets or hardware, dimensions, exclusions, package contents, and installation notes.
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.
