{"title":"2020-2027 GMC Sierra 3500HD Double Cab 6-Inch Running Boards","description":"\u003cp\u003eShop 6-inch running boards and nerf bars within the 2020-2027 GMC Sierra 3500HD Double Cab collection architecture. Current qualifying products are labeled through 2026. Confirm the exact supported model years, Double Cab application, and any vehicle-specific notes on the individual product page before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e2027 availability:\u003c\/strong\u003e This collection is reserved for confirmed 2027 GMC Sierra 3500HD Double Cab products. Current qualifying listings are through 2026 and do not establish 2027 fitment. For a 2027 truck, use only a product page that explicitly includes 2027.\u003c\/p\u003e\u003ch2\u003eChoose the Right 6-Inch Step\u003c\/h2\u003e\u003cp\u003eConfirm Double Cab first, then compare exact supported years, any rear-wheel or other application notes, step profile, material, finish, dimensions, brackets, package contents, exclusions, and installation notes.\u003c\/p\u003e\u003ch2\u003eRelated GMC Sierra 3500HD Collections\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/2020-2027-gmc-sierra-3500hd-6-inch-running-boards\"\u003e2020-2027 GMC Sierra 3500HD 6-Inch Running Boards\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gmc-sierra-3500hd-2020-2027-running-boards-nerf-bars\"\u003e2020-2027 GMC Sierra 3500HD Running Boards \u0026amp; Nerf Bars\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gmc-nerf-bars-6-inch\"\u003eGMC 6-Inch Nerf Bars\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/nerf-bars-6-inch\"\u003eAll 6-Inch Running Boards \u0026amp; Nerf Bars\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDoes every product fit every 2020-2027 Sierra 3500HD Double Cab?\u003c\/h3\u003e\u003cp\u003eNo. Current qualifying products are labeled through 2026. Verify the exact supported model years and any additional application notes on the individual product page.\u003c\/p\u003e\u003ch3\u003eDo the current products establish 2027 fitment?\u003c\/h3\u003e\u003cp\u003eNo. The page architecture extends to 2027, but current qualifying listings are through 2026. Use only a listing that explicitly includes 2027 for a 2027 truck.\u003c\/p\u003e\u003ch3\u003eCan Crew Cab or Regular Cab boards be used on a Double Cab?\u003c\/h3\u003e\u003cp\u003eDo not assume so. Cab configuration can change board length, brackets, mounting points, and step position. Choose a listing explicitly supporting Double Cab.\u003c\/p\u003e\u003ch3\u003eWhat should I verify before installation?\u003c\/h3\u003e\u003cp\u003eCheck exact year and Double Cab fitment, any rear-wheel or other application notes, dimensions, package contents, included brackets or hardware, exclusions, and installation instructions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAftermarket trademark disclaimer:\u003c\/strong\u003e 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.\u003c\/p\u003e","products":[{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-new-running-boards-stainless-6-inches-186475","title":"GMC Sierra 3500HD Double Cab 2020-2026 New Running Boards Stainless 6 Inches","description":"\u003c!-- PAP PRODUCT SEO SPRINT 2026-08-02 BATCH 26 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e: 6-inch running boards. Confirm the exact year, model and body configuration before ordering.\u003c\/p\u003e\u003ch2\u003eFitment and Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e GMC Sierra 3500HD Double Cab 2020-2026\u003c\/li\u003e\n\u003cli\u003eStainless steel with a polished stainless steel finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment note:\u003c\/strong\u003e Fit 3500HD Double Cab models. Do not fit Classic body.\u003c\/li\u003e\n\u003cli\u003eDriver- and passenger-side boards, mounting brackets, hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp data-pap-faq-item=\"1\"\u003e\u003cstrong\u003eWhat is the listed fitment?\u003c\/strong\u003e\u003cbr\u003eGMC Sierra 3500HD Double Cab 2020-2026.\u003c\/p\u003e\u003cp data-pap-faq-item=\"2\"\u003e\u003cstrong\u003eWhat material and finish are listed?\u003c\/strong\u003e\u003cbr\u003eStainless steel with a polished stainless steel finish.\u003c\/p\u003e\u003cp data-pap-faq-item=\"3\"\u003e\u003cstrong\u003eAre both sides included?\u003c\/strong\u003e\u003cbr\u003eYes. The source listing includes driver- and passenger-side boards with mounting hardware.\u003c\/p\u003e\u003cp data-pap-faq-item=\"4\"\u003e\u003cstrong\u003eWhat fitment restriction should I check?\u003c\/strong\u003e\u003cbr\u003eFit 3500HD Double Cab models. Do not fit Classic body.\u003c\/p\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e | \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Side Steps\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eVehicle and model names are trademarks of their respective owners. People Auto Parts is an independent aftermarket retailer and is not affiliated with, sponsored by, or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090226598053,"sku":"186475","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/S6-SSMAIN_WITHOUTBRACKETS_57f66dc2-3d15-4e44-991a-051d81f10f47.jpg?v=1778550308"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-new-running-boards-black-6-inches-187871","title":"GMC Sierra 3500HD Double Cab 2020-2026 New Running Boards Black 6 Inches","description":"\u003c!-- PAP PRODUCT SEO SPRINT 2026-08-02 BATCH 28 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e: 6-inch running boards. Confirm the exact year, model and body configuration before ordering.\u003c\/p\u003e\u003ch2\u003eFitment and Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e GMC Sierra 3500HD Double Cab 2020-2026\u003c\/li\u003e\n\u003cli\u003eHeavy-duty carbon steel with a black finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment note:\u003c\/strong\u003e Fit 3500HD Double Cab models. Do not fit Classic body.\u003c\/li\u003e\n\u003cli\u003eDriver- and passenger-side boards, mounting brackets, hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp data-pap-faq-item=\"1\"\u003e\u003cstrong\u003eWhat is the listed fitment?\u003c\/strong\u003e\u003cbr\u003eGMC Sierra 3500HD Double Cab 2020-2026.\u003c\/p\u003e\u003cp data-pap-faq-item=\"2\"\u003e\u003cstrong\u003eWhat material and finish are listed?\u003c\/strong\u003e\u003cbr\u003eHeavy-duty carbon steel with a black finish.\u003c\/p\u003e\u003cp data-pap-faq-item=\"3\"\u003e\u003cstrong\u003eAre both sides included?\u003c\/strong\u003e\u003cbr\u003eYes. The source listing includes driver- and passenger-side boards with mounting hardware.\u003c\/p\u003e\u003cp data-pap-faq-item=\"4\"\u003e\u003cstrong\u003eWhat fitment restriction should I check?\u003c\/strong\u003e\u003cbr\u003eFit 3500HD Double Cab models. Do not fit Classic body.\u003c\/p\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e | \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Side Steps\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eVehicle and model names are trademarks of their respective owners. People Auto Parts is an independent aftermarket retailer and is not affiliated with, sponsored by, or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090231972005,"sku":"187871","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/S6-BLKMAIN_WITHOUTBRACKETS_e8c2a34f-3974-4c72-a0f6-0ee8a93602c0.jpg?v=1778640285"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-running-boards-black-6-inches-187899","title":"GMC Sierra 3500HD Double Cab 2020-2026 Running Boards Black 6 Inches","description":"\u003c!-- PAP PRODUCT SEO SPRINT 2026-08-03 BATCH 29 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e: 6-inch running boards. Confirm the exact year, model and body configuration before ordering.\u003c\/p\u003e\u003ch2\u003eFitment and Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e GMC Sierra 3500HD Double Cab 2020-2026\u003c\/li\u003e\n\u003cli\u003eHeavy-duty carbon steel with a black finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment note:\u003c\/strong\u003e Fit 3500HD Double Cab models. Do not fit Classic body.\u003c\/li\u003e\n\u003cli\u003eDriver- and passenger-side boards, mounting brackets, hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp data-pap-faq-item=\"1\"\u003e\u003cstrong\u003eWhat is the listed fitment?\u003c\/strong\u003e\u003cbr\u003eGMC Sierra 3500HD Double Cab 2020-2026.\u003c\/p\u003e\u003cp data-pap-faq-item=\"2\"\u003e\u003cstrong\u003eWhat material and finish are listed?\u003c\/strong\u003e\u003cbr\u003eHeavy-duty carbon steel with a black finish.\u003c\/p\u003e\u003cp data-pap-faq-item=\"3\"\u003e\u003cstrong\u003eAre both sides included?\u003c\/strong\u003e\u003cbr\u003eYes. The source listing includes driver- and passenger-side boards with mounting hardware.\u003c\/p\u003e\u003cp data-pap-faq-item=\"4\"\u003e\u003cstrong\u003eWhat fitment restriction should I check?\u003c\/strong\u003e\u003cbr\u003eFit 3500HD Double Cab models. Do not fit Classic body.\u003c\/p\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e | \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Side Steps\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eVehicle and model names are trademarks of their respective owners. People Auto Parts is an independent aftermarket retailer and is not affiliated with, sponsored by, or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090232889509,"sku":"187899","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/H6-BLK-1_8cd8b8df-1b23-4260-87d8-9193bdd38066.jpg?v=1776772058"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-running-boards-stainless-6-inches-187895","title":"GMC Sierra 3500HD Double Cab 2020-2026 Running Boards Stainless 6 Inches","description":"\u003c!-- PAP PRODUCT SEO SPRINT 2026-08-03 BATCH 29 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e: 6-inch running boards. Confirm the exact year, model and body configuration before ordering.\u003c\/p\u003e\u003ch2\u003eFitment and Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e GMC Sierra 3500HD Double Cab 2020-2026\u003c\/li\u003e\n\u003cli\u003eStainless steel with a polished stainless steel finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment note:\u003c\/strong\u003e Fit 3500HD Double Cab models. Do not fit Classic body.\u003c\/li\u003e\n\u003cli\u003eDriver- and passenger-side boards, mounting brackets, hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp data-pap-faq-item=\"1\"\u003e\u003cstrong\u003eWhat is the listed fitment?\u003c\/strong\u003e\u003cbr\u003eGMC Sierra 3500HD Double Cab 2020-2026.\u003c\/p\u003e\u003cp data-pap-faq-item=\"2\"\u003e\u003cstrong\u003eWhat material and finish are listed?\u003c\/strong\u003e\u003cbr\u003eStainless steel with a polished stainless steel finish.\u003c\/p\u003e\u003cp data-pap-faq-item=\"3\"\u003e\u003cstrong\u003eAre both sides included?\u003c\/strong\u003e\u003cbr\u003eYes. The source listing includes driver- and passenger-side boards with mounting hardware.\u003c\/p\u003e\u003cp data-pap-faq-item=\"4\"\u003e\u003cstrong\u003eWhat fitment restriction should I check?\u003c\/strong\u003e\u003cbr\u003eFit 3500HD Double Cab models. Do not fit Classic body.\u003c\/p\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e | \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Side Steps\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eVehicle and model names are trademarks of their respective owners. People Auto Parts is an independent aftermarket retailer and is not affiliated with, sponsored by, or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090232955045,"sku":"187895","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/H6-SS-1_e90c05ae-56f2-417f-acc8-4ea915dc8600.jpg?v=1776772098"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-running-boards-step-stainless-6-inch-187919","title":"GMC Sierra 3500HD Double Cab 2020-2026 Running Boards Step Stainless 6 Inch","description":"\u003c!-- PAP PRODUCT SEO SPRINT 2026-08-03 BATCH 29 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e: 6-inch running boards. Confirm the exact year, model and body configuration before ordering.\u003c\/p\u003e\u003ch2\u003eFitment and Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e GMC Sierra 3500HD Double Cab 2020-2026\u003c\/li\u003e\n\u003cli\u003eStainless steel with a polished stainless steel finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment note:\u003c\/strong\u003e Fit 3500HD Double Cab models. Do not fit Classic body.\u003c\/li\u003e\n\u003cli\u003eDriver- and passenger-side boards, mounting brackets, hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp data-pap-faq-item=\"1\"\u003e\u003cstrong\u003eWhat is the listed fitment?\u003c\/strong\u003e\u003cbr\u003eGMC Sierra 3500HD Double Cab 2020-2026.\u003c\/p\u003e\u003cp data-pap-faq-item=\"2\"\u003e\u003cstrong\u003eWhat material and finish are listed?\u003c\/strong\u003e\u003cbr\u003eStainless steel with a polished stainless steel finish.\u003c\/p\u003e\u003cp data-pap-faq-item=\"3\"\u003e\u003cstrong\u003eAre both sides included?\u003c\/strong\u003e\u003cbr\u003eYes. The source listing includes driver- and passenger-side boards with mounting hardware.\u003c\/p\u003e\u003cp data-pap-faq-item=\"4\"\u003e\u003cstrong\u003eWhat fitment restriction should I check?\u003c\/strong\u003e\u003cbr\u003eFit 3500HD Double Cab models. Do not fit Classic body.\u003c\/p\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e | \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Side Steps\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eVehicle and model names are trademarks of their respective owners. People Auto Parts is an independent aftermarket retailer and is not affiliated with, sponsored by, or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090233905317,"sku":"187919","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/0-V6-SS_aa023957-b225-4ac6-b35c-d1bb55f08e48.jpg?v=1778142102"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-running-boards-step-black-6-inch-187923","title":"GMC Sierra 3500HD Double Cab 2020-2026 Running Boards Step Black 6 Inch","description":"\u003c!-- PAP PRODUCT SEO SPRINT 2026-08-03 BATCH 29 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e: 6-inch running boards. Confirm the exact year, model and body configuration before ordering.\u003c\/p\u003e\u003ch2\u003eFitment and Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed application:\u003c\/strong\u003e GMC Sierra 3500HD Double Cab 2020-2026\u003c\/li\u003e\n\u003cli\u003eHeavy-duty carbon steel with a black finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment note:\u003c\/strong\u003e Fit 3500HD Double Cab models. Do not fit Classic body.\u003c\/li\u003e\n\u003cli\u003eDriver- and passenger-side boards, mounting brackets, hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp data-pap-faq-item=\"1\"\u003e\u003cstrong\u003eWhat is the listed fitment?\u003c\/strong\u003e\u003cbr\u003eGMC Sierra 3500HD Double Cab 2020-2026.\u003c\/p\u003e\u003cp data-pap-faq-item=\"2\"\u003e\u003cstrong\u003eWhat material and finish are listed?\u003c\/strong\u003e\u003cbr\u003eHeavy-duty carbon steel with a black finish.\u003c\/p\u003e\u003cp data-pap-faq-item=\"3\"\u003e\u003cstrong\u003eAre both sides included?\u003c\/strong\u003e\u003cbr\u003eYes. The source listing includes driver- and passenger-side boards with mounting hardware.\u003c\/p\u003e\u003cp data-pap-faq-item=\"4\"\u003e\u003cstrong\u003eWhat fitment restriction should I check?\u003c\/strong\u003e\u003cbr\u003eFit 3500HD Double Cab models. Do not fit Classic body.\u003c\/p\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e | \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Side Steps\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eVehicle and model names are trademarks of their respective owners. People Auto Parts is an independent aftermarket retailer and is not affiliated with, sponsored by, or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090234069157,"sku":"187923","price":349.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/V6-REG-BLKMAIN_WITHOUTBRACKETS_235afc39-44ca-4892-b578-eec6c21f6927.jpg?v=1778142344"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-black-aluminum-nerf-bars-6-inch-196479","title":"2020-2026 GMC Sierra 3500HD Double Cab Black Aluminum 6-Inch Running Boards","description":"\u003cp\u003eThese 6 inches, black, aluminum alloy side steps are listed for the GMC Sierra 3500HD Double Cab 2020-2026. Use the fitment, finish and package details below to compare them with your truck before ordering.\u003c\/p\u003e\u003ch3\u003eExact Vehicle Fitment\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis listing is specific to the GMC Sierra 3500HD Double Cab 2020-2026; other cab configurations are not included. Confirm model year, truck series and cab before checkout.\u003c\/p\u003e\u003ch3\u003eVerified Style and Configuration\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMaterial: Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003eFinish: Black\u003c\/li\u003e\n\u003cli\u003eStep Width: 6 Inches\u003c\/li\u003e\n\u003cli\u003eInstallation Type: Bolt-On\u003c\/li\u003e\n\u003cli\u003eMounting Hardware Included: Yes\u003c\/li\u003e\n\u003cli\u003eSide Steps Included: Left and Right Running Boards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIncluded Components\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x Left Running Board\u003c\/li\u003e\n\u003cli\u003e1 x Right Running Board\u003c\/li\u003e\n\u003cli\u003eMounting Brackets\u003c\/li\u003e\n\u003cli\u003eInstallation Hardware\u003c\/li\u003e\n\u003cli\u003eInstallation Instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eInstallation is designed to be straightforward using factory mounting locations on the vehicle. Estimated Installation Time: 45-90 minutes Basic hand tools may be required. While many customers install running boards themselves, professional installation is recommended if you are unfamiliar with automotive accessory installation.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhich vehicle does this product fit?\u003c\/strong\u003e\u003cbr\u003eIt is listed for the GMC Sierra 3500HD Double Cab 2020-2026. Confirm the exact year and configuration before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich cab configuration is required?\u003c\/strong\u003e\u003cbr\u003eThe listed application is Double Cab only. Other cab configurations require a different application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included?\u003c\/strong\u003e\u003cbr\u003e1 x Left Running Board, 1 x Right Running Board, Mounting Brackets, Installation Hardware, Installation Instructions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat should be checked before installation?\u003c\/strong\u003e\u003cbr\u003eThe product information lists bolt-on installation at factory mounting locations, an estimated 45-90 minutes and basic hand tools. Follow the included instructions and verify bracket alignment before final tightening.\u003c\/p\u003e\u003ch3\u003eShop Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gmc-sierra-3500hd-2020-2027-double-cab-running-boards-nerf-bars\"\u003e2020-2027 GMC Sierra 3500HD Double Cab Running Boards \u0026amp; Nerf Bars\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/nerf-bars-6-inch\"\u003eNerf Bars 6 inch\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAftermarket Product Notice\u003c\/h3\u003e\u003cp\u003e\u003csmall\u003eThis is an aftermarket product. Vehicle manufacturer and model names are trademarks of their respective owners and are used only to identify compatibility. People Auto Parts is not affiliated with or endorsed by any vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090272473253,"sku":"196479","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/16908599471792072116.jpg?v=1764035768"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-hex-steps-running-boards-stainless-6-inches-199069","title":"GMC Sierra 3500HD Double Cab 2020-2026 Hex Steps Running Boards Stainless 6 Inches","description":"\u003c!-- PAP PRODUCT SEO SPRINT | BATCH 98 | 2026-08-12 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026 stainless 6-inch hex-step running boards\u003c\/strong\u003e are listed for the Double Cab configuration. Confirm model year, series, and cab before ordering.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Details\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eListed application:\u003c\/strong\u003e 2020-2026 GMC Sierra 3500HD Double Cab. Vehicle modifications can affect compatibility.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e6-inch hex-step style\u003c\/li\u003e\n\u003cli\u003eStainless Steel\u003c\/li\u003e\n\u003cli\u003ePolished Stainless Steel finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIncluded Components\u003c\/h2\u003e\u003cp\u003eThe source lists left- and right-side boards, mounting brackets, installation hardware, and instructions.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Warranty\u003c\/h2\u003e\u003cp\u003eThe source describes bolt-on installation using factory mounting locations, about 45-90 minutes with basic hand tools, and a 1-year limited manufacturer warranty for defects under normal use; improper installation, misuse, and modification are excluded.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdiv data-pap-faq-item=\"1\"\u003e\n\u003ch3\u003eWhich vehicle is listed?\u003c\/h3\u003e\n\u003cp\u003e2020-2026 GMC Sierra 3500HD Double Cab.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv data-pap-faq-item=\"2\"\u003e\n\u003ch3\u003eWhat style and finish are listed?\u003c\/h3\u003e\n\u003cp\u003ePolished stainless-steel 6-inch hex-step running boards.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv data-pap-faq-item=\"3\"\u003e\n\u003ch3\u003eWhat is included?\u003c\/h3\u003e\n\u003cp\u003eLeft and right boards, brackets, installation hardware, and instructions are listed.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv data-pap-faq-item=\"4\"\u003e\n\u003ch3\u003eWhat should I verify?\u003c\/h3\u003e\n\u003cp\u003eConfirm model year, 3500HD series, and Double Cab configuration before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eShop Related Parts\u003c\/h2\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e or \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Nerf Bars\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eGMC and Sierra are trademarks of their respective owner. People Auto Parts is an independent aftermarket retailer and is not affiliated with or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090600513701,"sku":"199069","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/D6-SSMAIN_WITHOUTBRACKETS_12138167-aac3-4c64-95f6-458a05cae978.jpg?v=1778476098"},{"product_id":"gmc-sierra-3500hd-double-cab-2020-2026-hex-steps-running-boards-black-6-inches-199073","title":"GMC Sierra 3500HD Double Cab 2020-2026 Hex Steps Running Boards Black 6 Inches","description":"\u003c!-- PAP PRODUCT SEO SPRINT | BATCH 98 | 2026-08-12 --\u003e\u003cp\u003e\u003cstrong\u003eGMC Sierra 3500HD Double Cab 2020-2026 black 6-inch hex-step running boards\u003c\/strong\u003e are listed for the Double Cab configuration. Confirm model year, series, and cab before ordering.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Details\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eListed application:\u003c\/strong\u003e 2020-2026 GMC Sierra 3500HD Double Cab. Vehicle modifications can affect compatibility.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e6-inch hex-step style\u003c\/li\u003e\n\u003cli\u003eHeavy Duty Carbon Steel\u003c\/li\u003e\n\u003cli\u003eBlack finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIncluded Components\u003c\/h2\u003e\u003cp\u003eThe source lists left- and right-side boards, mounting brackets, installation hardware, and instructions.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Warranty\u003c\/h2\u003e\u003cp\u003eThe source describes bolt-on installation using factory mounting locations, about 45-90 minutes with basic hand tools, and a 1-year limited manufacturer warranty for defects under normal use; improper installation, misuse, and modification are excluded.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdiv data-pap-faq-item=\"1\"\u003e\n\u003ch3\u003eWhich vehicle is listed?\u003c\/h3\u003e\n\u003cp\u003e2020-2026 GMC Sierra 3500HD Double Cab.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv data-pap-faq-item=\"2\"\u003e\n\u003ch3\u003eWhat style and finish are listed?\u003c\/h3\u003e\n\u003cp\u003eBlack 6-inch hex-step running boards made from heavy-duty carbon steel.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv data-pap-faq-item=\"3\"\u003e\n\u003ch3\u003eWhat is included?\u003c\/h3\u003e\n\u003cp\u003eLeft and right boards, brackets, installation hardware, and instructions are listed.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv data-pap-faq-item=\"4\"\u003e\n\u003ch3\u003eWhat should I verify?\u003c\/h3\u003e\n\u003cp\u003eConfirm model year, 3500HD series, and Double Cab configuration before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch2\u003eShop Related Parts\u003c\/h2\u003e\u003cp\u003e\u003ca data-pap-internal-link=\"1\" href=\"\/collections\/running-boards-nerf-bars\"\u003eRunning Boards \u0026amp; Nerf Bars\u003c\/a\u003e or \u003ca data-pap-internal-link=\"2\" href=\"\/collections\/nerf-bars-6-inch\"\u003e6-Inch Nerf Bars\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eGMC and Sierra are trademarks of their respective owner. People Auto Parts is an independent aftermarket retailer and is not affiliated with or endorsed by the vehicle manufacturer.\u003c\/small\u003e\u003c\/p\u003e","brand":"People Auto Parts","offers":[{"title":"Default Title","offer_id":46090603528357,"sku":"199073","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4967\/7733\/files\/D6-BLKMAIN_WITHOUTBRACKETS_cc6c3bea-d5c4-4969-a042-13b80bcbd7a8.jpg?v=1778475573"}],"url":"https:\/\/www.peopleautoparts.com\/collections\/2020-2027-gmc-sierra-3500hd-double-cab-6-inch-running-boards.oembed","provider":"People Auto Parts","version":"1.0","type":"link"}