8 Products
1999-2006 GMC Sierra 1500 Extended Cab Running Boards & Nerf Bars
Shop running boards and nerf bars for 1999, 2000, 2001, 2002, 2003, 2004, 2005, and 2006 GMC Sierra 1500 Extended Cab trucks. People Auto Parts carries aftermarket Extended Cab side steps for compatible GMC Sierra 1500 models, including black, stainless, 5-inch, 6-inch, wide step, and nerf bar styles.
Extended Cab fitment is important because GMC Sierra 1500 Extended Cab, Crew Cab, and Regular Cab running boards are not interchangeable. Product length, brackets, and mounting points can vary by cab style. Before ordering, confirm that the product title and fitment notes match your Sierra 1500 Extended Cab.
Some GMC Sierra 1500 and Chevy Silverado 1500 running boards may share fitment, but compatibility must be confirmed by the product listing. For this generation, GMC Sierra 1500 Crew Cab fitment should be treated separately as 2004-2006 only.
All products in this collection are aftermarket parts and are not OEM or OE GMC, GM, or Chevrolet parts. Vehicle names are used only to identify vehicle compatibility.
Shop Related GMC Sierra 1500 Parts
- 1999-2006 GMC Sierra 1500 Running Boards & Nerf Bars
- 2007-2013 GMC Sierra 1500 Extended Cab Running Boards
Related Chevy Silverado 1500 Parts
- 1999-2006 Chevy Silverado 1500 Extended Cab Running Boards
- 1999-2006 Chevy Silverado 1500 Parts & Accessories
1999-2006 GMC Sierra 1500 Extended Cab Running Boards FAQ
Will these running boards fit my 1999-2006 GMC Sierra 1500 Extended Cab?
Fitment depends on your exact model year and product design. Check the product title and fitment notes to confirm Extended Cab compatibility before ordering.
Do Extended Cab and Crew Cab running boards fit the same GMC Sierra 1500?
No. Extended Cab and Crew Cab running boards may use different lengths, brackets, and mounting points. Choose products designed specifically for your cab style.
Did the GMC Sierra 1500 Crew Cab start in 2004?
For this generation, treat GMC Sierra 1500 Crew Cab fitment as 2004-2006 only. Extended Cab products should not be mixed with Crew Cab products unless the product listing clearly confirms compatibility.
Do GMC Sierra 1500 and Chevy Silverado 1500 Extended Cab running boards fit the same?
Some products may fit both GMC Sierra 1500 and Chevy Silverado 1500 Extended Cab trucks, but not all products are interchangeable. Always follow the exact fitment listed on each product page.
Are these OEM GMC Sierra 1500 running boards?
No. These are aftermarket running boards and nerf bars unless a product page states otherwise. GMC, Sierra, GM, and Chevrolet names are used only to identify vehicle compatibility.
