ASE Certified Hummer Transmission Repair

Serving Portland and Clackamas OR

Transmissions – CV Joints – Clutches
Performance Upgrades – Transfer Cases and Much More!!!

We service and repair all Hummer Models

H1 | H2 SUV | H2 SUT | H3 | H3T

We only use Hummer OEM Parts


Hummers are famous for being a civilian reproduction of a military Humvee. These large trucks and SUVs are hardly unnoticeable as they demand to be acknowledged wherever they go. Coming in a wide variety of bright and subdued colors, they are a sight to be seen as they pass by on the freeway or city streets. Although the exterior of these vehicles are designed to take tremendous wear and tear, their transmissions however are an entirely different story. Hummer transmissions are known to fail unpredictably, and can stop working at any mileage with some as early as 50k miles. Known Hummer transmission problems include but are not limited to:

  • Transmission Line Leaks
  • Faulty Front Differential Case Seals
  • Transfer Case Failure
  • Defective U-Joints Driveshaft
  • Defective Torque Converter
  • Transmission Cooler Issues
  • Radiator Leaks

No matter the problem with your Hummer’s transmission, the skilled technicians with River City Transmissions have brand specific training so you get the best service possible. The ASE certified mechanics on staff know the ins and outs of Hummer transmission making repairs and rebuilds routine. All Hummer transmission repair and service is proudly backed by a 12 month, 12,000 mile warranty so you know the service plan is guaranteed. Don’t trust your luxury truck or SUV with just any transmission shop, and choose River City Transmissions as we will rebuild your vehicle’s transmission or clutch to meet or even beat factory specifications, every time.

Transmission Repair in Portland OR and Vancouver WA

Servicing Customers on the East Side:

Portland | NE Portland | Gresham | Happy Valley | Clackamas | Milwaukie | Mt Tabor | Belmont | Lloyd Center | Laurelhurst | Hollywood District

On the West Side:

Downtown Portland | Beaverton | Tigard | Hillsboro | Cornell | Sylvan | Cedar Hills

And in the Vancouver WA Area:

Downtown Vancouver | Fruit Valley | Hazel Dell | Felida | Cascade Park | Camas Washington | Orchards | Fishers Landing

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