GMC Sierra 3500 Classic Parts & Accessories

GMC Sierra 3500 Classic Parts & Accessories

The GMT800-era GMC Sierra 3500 Classic was built for maximum payload and towing applications, and owners who keep these trucks on the road value the availability of quality replacement and upgrade parts that maintain performance at high workloads. The solid front axle and heavy-duty leaf spring setup gives these trucks lift kit compatibility across a wide range of configurations.

Popular Upgrades

Exhaust systems, suspension lift kits, and cold air intakes are the most popular Sierra 3500 Classic upgrades. Diesel performance parts including fuel injectors, intercooler upgrades, and tuners are also frequently sought by Duramax owners who use these trucks for work and want to extract every available pound of torque for demanding towing applications.

What exhaust works on the Sierra 3500 Classic Duramax diesel?

The LB7 and LLY Duramax diesels in the Sierra 3500 Classic respond well to cat-back and turbo-back exhaust upgrades from MBRP, Flo-Pro, and Banks Power. These systems reduce exhaust restriction, lower EGTs under load, and deliver the assertive diesel tone characteristic of properly upgraded heavy-duty trucks.

What lift kits are available for the Sierra 3500 Classic?

The Sierra 3500 Classic shares its suspension architecture with the 2500 HD Classic, making many of the same lift kit configurations directly applicable. Add-a-leaf and block lift combinations in 2 to 4 inches are the most straightforward options, while longer kits from Skyjacker and Pro Comp include all driveshaft and shock hardware for larger lift heights.

Keep building: Exhaust Systems, Suspension Kits, and Cold Air Intakes.