CURT
Sized for the Sierra 2500HD / 3500HDThe widest range of bolt-on receivers, from Class III to Class V.
Browse CURT for your Sierra 2500HD / 3500HDGMC Sierra 2500HD / 3500HD (2020–present)
Hitches & towing for the GMC Sierra 2500HD / 3500HD
Receivers, gooseneck and fifth wheel hitches, trailer wiring and brake controllers.
Your towing setupBrand links update as you choose.
Before you buy: Small differences between trucks change the right hitch. Use the towing lookup to set cab, bed, drive and puck prep.
Receiver hitches
Class III to V receivers that bolt to the frame behind the bumper.
Draw-Tite
Sized for the Sierra 2500HD / 3500HDMax-Frame and Ultra Frame receivers made for pickups.
Browse Draw-Tite for your Sierra 2500HD / 3500HDReese
Sized for the Sierra 2500HD / 3500HDClass III and IV receivers with a hidden cross tube.
Browse Reese for your Sierra 2500HD / 3500HDGooseneck hitches
Under-bed kits and puck-system balls for full-size pickups.
B&W
Sized for the Sierra 2500HD / 3500HDTurnoverball under-bed kits: flip the ball over for a flat floor.
Browse B&W for your Sierra 2500HD / 3500HD
CURT
Sized for the Sierra 2500HD / 3500HDDouble Lock under-bed kits and puck-system balls.
Browse CURT for your Sierra 2500HD / 3500HD
Andersen
Sized for the Sierra 2500HD / 3500HDRemovable Ultimate gooseneck balls in forged aluminum.
Browse Andersen for your Sierra 2500HD / 3500HDReese
Sized for the Sierra 2500HD / 3500HDElite Series under-bed and puck-system gooseneck hitches.
Browse Reese for your Sierra 2500HD / 3500HDFifth wheel hitches
Rail-mount and puck-mount hitches. Beds 6.5 ft and shorter usually need a slider.
B&W
Sized for the Sierra 2500HD / 3500HDCompanion hitches that drop into a Turnoverball or factory pucks.
Browse B&W for your Sierra 2500HD / 3500HD
CURT
Sized for the Sierra 2500HD / 3500HDA20, A25 and Q-series hitches for rails or pucks.
Browse CURT for your Sierra 2500HD / 3500HDReese
Sized for the Sierra 2500HD / 3500HDRail and puck hitches, with sliders for short beds.
Browse Reese for your Sierra 2500HD / 3500HD
Andersen
Sized for the Sierra 2500HD / 3500HDThe Ultimate 5th Wheel Connection: a light gooseneck-ball conversion.
Browse Andersen for your Sierra 2500HD / 3500HDTrailer wiring
Plug-in 4-way and 7-way connectors made for your truck's harness.
Truck Upfitters
Sealed 12V trailer junction box
A weatherproof box with six resettable breakers for tidy trailer and upfit wiring.
UniversalSee it on Amazon
More brands
Hopkins
Sized for the Sierra 2500HD / 3500HDPlug-In Simple connectors and 7-way kits for your truck's harness.
Browse Hopkins for your Sierra 2500HD / 3500HD
CURT
Sized for the Sierra 2500HD / 3500HDCustom T-connectors and 7-way RV blade kits.
Browse CURT for your Sierra 2500HD / 3500HDBrake controllers
Proportional controllers that work in any truck with the right harness.
Tekonsha Proportional brake controllerPremium
Tekonsha Prodigy P3 Brake Controller
Proportional controller for 1 to 4 axles. Add the harness for your truck brand.
- Fits this truck#90195See it on Amazon
More brands
CURT
Universal fitEcho wireless and Discovery proportional controllers.
Popular lines: Echo (wireless)Discovery
Browse CURT on AmazonBrake controller harnesses
The plug that connects a controller to the factory port under the dash.
Tekonsha
Sized for the Sierra 2500HD / 3500HDPlug-in harnesses for Tekonsha and most other controllers.
Browse Tekonsha for your Sierra 2500HD / 3500HD
CURT
Sized for the Sierra 2500HD / 3500HDCustom controller harnesses for your truck.
Browse CURT for your Sierra 2500HD / 3500HDBrand buttons search Amazon for that brand plus your vehicle. Check the listing's fit notes for cab, bed and trim.
Listings open on Amazon, where you check out. TruckBedSizes.com earns a small commission from qualifying purchases as an Amazon Associate. It costs you nothing extra. How this works.