GMC Sierra 2500HD/3500HD Transmission.
We track 18 GMC Sierra 2500HD/3500HD transmission parts from 6 brands, $44.99 to $4,499.99 as recorded 2026-10-19, each at its lowest price across the retailers we compare.
Pans, coolers, torque converters, and built transmission packages for towing and power.
18 parts
GMC Sierra 2500HD/3500HD or Chevy Silverado 2500HD/3500HD?
The GMC Sierra 2500HD/3500HD and the Chevy Silverado 2500HD/3500HD are closely related trucks, and many parts are sold for both, so each one gets its own page here. Of the 18 transmission parts on this page, 15 are also listed for the Chevy Silverado 2500HD/3500HD and 3 are listed for the GMC Sierra 2500HD/3500HD only. The Chevy Silverado 2500HD/3500HD page lists 3 that are not on this one. Check the fitment notes on each part before you order, because engine and trim still matter.
Gains shown are manufacturer claims, labeled community estimates, or independent tests, as tagged on each part. See the full catalog to filter by engine, drivetrain, and more, or the price index for what this category typically costs.