Shop parts and accessories that fit the 2020 GMC Sierra 3500 HD: tonneau covers, lighting, steps and running boards, suspension, exhaust, bumpers and more from the brands truck owners trust. Every part on this page is matched to the 2020 GMC Sierra 3500 HD using manufacturer fitment data. Use the vehicle selector above to narrow results by trim, cab, bed length and engine.

Skyjacker
Skyjacker M9569 M95 Monotube Shock for 2012-2014 Chevrolet Silverado and GMC Sierra HD
Price$99.82
In Stock
★ Mission Ready


Fabtech
Fabtech K1179M Ball Joint UCA Lift System with Dirt Logic 2.25 Shocks for 2020-2021 Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD
Price$1,349.31Free Shipping
In Stock
★ Mission Ready


Fabtech
Fabtech K1202DL 4-Inch Performance Lift System with Shocks for Chevy Silverado 3500 HD and GMC Sierra 3500 HD
Price$3,678.58
In Stock
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Fabtech
Fabtech 4-Inch Performance Lift System with Shocks K1203DL for 2020–2023 Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD
Price$3,898.12
In Stock
★ Mission Ready


Zone Offroad
Zone Offroad Nitro Smooth Body Shock Absorber ZON7603 for 2011-2024 Chevy Silverado 2500HD/3500HD, 2011-2024 GMC Sierra 2500HD/3500HD
Price$67.99
In Stock
★ Mission Ready


Zone Offroad
Zone Offroad Nitro Smooth Body Shock Absorber ZON7757 for Chevy Colorado/Silverado, GMC Canyon/Sierra, Ram 1500, Dodge Ram
Price$54.95
In Stock
★ Mission Ready


Zone Offroad
Zone Offroad ZONC1231 2-Inch Torsion Key Leveling Kit for Chevy Silverado and GMC Sierra HD
Price$122.95
In Stock
★ Mission Ready


Bilstein
Bilstein B6 4600 Shock Absorber 24-196437 for Stock-Height Light Trucks and SUVs, Fits Chevy Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD
Price$109.00
In Stock
★ Mission Ready

Bilstein
Bilstein B6 4600 24-196444 Monotube Suspension Shock Absorber for 2011-2026 Chevy Silverado 2500HD/3500HD, 2011-2026 GMC Sierra 2500HD/3500HD
Price$92.00
In Stock
★ Mission Ready


Bilstein
Bilstein B8 5100 Monotube Suspension Shock Absorber 24-196468 for 2011-2026 Chevy Silverado 2500HD/3500HD, 2011-2026 GMC Sierra 2500HD/3500HD
Price$123.00
In Stock
★ Mission Ready


Bilstein
Bilstein B8 5100 24-218023 Monotube Suspension Shock Absorber for 2011-2026 Chevy Silverado 2500HD/3500HD, 2011-2026 GMC Sierra 2500HD/3500HD
Price$123.00
In Stock
★ Mission Ready


Carr
Carr 103331 HOOP II Assist Side Steps, XP3 Black Powder Coat, Pair for Chevy Colorado/Silverado, GMC Canyon/Sierra
Price$181.73
In Stock
★ Mission Ready


Raptor Series
Raptor Series 1701-0017BT 6-Inch OEM-Style Running Boards, Black Textured Aluminum for Chevy Silverado and GMC Sierra Regular Cab
Price$440.99Free Shipping
In Stock
★ Mission Ready


Raptor Series
Raptor Series 1701-0041BT 6-Inch OEM-Style Running Boards, Black Textured Aluminum for Chevy Silverado, GMC Sierra
Price$481.99Free Shipping
In Stock
★ Mission Ready


Raptor Series
Raptor Series 1701-0052BT 6-Inch OEM-Style Running Boards, Black Textured Aluminum for Chevy Silverado and GMC Sierra
Price$499.99Free Shipping
In Stock
★ Mission Ready


Bilstein
Bilstein B8 5160 Remote Reservoir Shock Absorber 25-311846 for Chevy Silverado, GMC Sierra
Price$299.00
In Stock
★ Mission Ready


Bilstein
Bilstein B8 5160 Remote Reservoir Shock Absorber 25-311891 for Chevy Avalanche/Silverado/Suburban/Tahoe, GMC Sierra/Yukon, Hummer H2
Price$299.00
In Stock
★ Mission Ready


Bilstein
Bilstein B8 5160 25-312027 Remote Reservoir Front Shock Absorber for 2011-2026 Chevy Silverado 2500HD/3500HD, 2011-2026 GMC Sierra 2500HD/3500HD
Price$299.00
In Stock
★ Mission Ready


Carr
Carr 123331 Super Hoop XP3 Black Powder-Coated Assist Side Steps, Pair for Chevy Colorado/Silverado, GMC Canyon/Sierra
Price$285.99
In Stock
★ Mission Ready


Carr
Carr 123332 Super Hoop XM3 Polished Aluminum Side Steps, Pair for Chevy Colorado/Silverado, GMC Canyon/Sierra
Price$310.40Free Shipping
In Stock
★ Mission Ready








