Tranz Tech - Transmission & Auto Repair in Dubuque Iowa.

Full Service Auto Repair Center, specializing in Transmissions

Tranz Tech is a family owned, full service auto repair center which specializes in transmission repair.  We have served Dubuque, IA and its surrounding area for more than 40 years.  In that time, we've built a loyal base of customers who have been our best advertisers.


We repair vehicles of all makes and models up to the size of an RV with fast, courteous and honest service.  Whether your vehicle needs major repairs to the engine, or minor repair such as brakes and belts, our mechanics will get you back on the road in a timely manner.


Tranz Tech employs ASE certified technicians to make sure your vehicle is properly diagnosed and a repair is done correctly.  You can rely on us to service your vehicle with confidence.  We take pride in our work, and constantly update our equipment and staff knowledge.  All of our parts and service are covered by our standard 12 month, 12,000 mile warranty.


With almost 100 prebuilt transmissions in stock, we can get your vehicle on the road faster!


  • Transmission Repair - Including rebuilds, transmission fluid flushes, transfer case repairs and more.
  • Auto Repair - We provide engine repair, brake service, oil changes, alignments exhaust, steering, suspension and more.
  • Overdrive Transmissions - We enhance the power of Mopar muscle cars with an innovative transmission designed and assembled at Tranz Tech.


Known for our professional but personable atmosphere, we pride ourselves on keeping a very clean working environment.  Previously featured in Mopar Collector's Guide, our auto repair technicians have established a reputation for innovative and effective repair services.

Contact Tranz Tech today @ 563-582-3809 or email us at tranztech@rocketmail.com for a free estimate or browse the website for more information about our services.

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