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Certified Transmission Inc

"Get It In Gear"

About Us

Looking for the highest quality transmission or driveline repairs in the industry? You have come to the right place! We have been providing top quality, industry-leading repairs right here in Mishawaka, Indiana, since first opening our doors back in 1967. Our highly trained, ASE certified technicians receive continual education to ensure they stay up-to-date on the latest technologies and techniques. By keeping our focus strictly on transmission and driveline repairs, we are able to offer unmatched knowledge and industry-leading expertise you can count on.

Why choose Certified Transmission Inc? We have been in the transmission and driveline industry since the 60’s, when we first opened our doors. Since then, our primary focus has been on providing the highest quality repairs with the best warranties in the industry. We have been able to deliver this to our customers by offering our industry-leading 3 year/100,000-mile nationwide warranty. Whether you are in need of a minor service or a major repair, you can rest assured that your vehicle is in good hands with Certified Transmission Inc!

Areas Served

Our Certifications

ASE Certified

What We Offer

Our Specialties include:

CV Axles
Transmission Rebuilds

Our Services include:

Transmission
Diagnostic
Automatics
Clutches
Torque Converters
Repairs
Rebuilds
Fluid Services
Leaks
Adjustments
& More!
Transfer Case
Replacements
4X4 (Four-Wheel-Drive)
AWD (All-Wheel-Drive)
Electrical Systems
Manual Systems
Differential
Diagnostics
Front Differential Services
Rear Differential Services
CV Shafts
Driveshaft’s

Testimonials

On 5/22/2026 Michael Damouth had this to say:
We had our 2017 Ford Escapes transmission repaired this may and may I say the way we were treated was more than the money. this is the friendly strait shooters you would take your mammas car to. Certified Transmission is what it says and what it means 💯

On 5/8/2026 Lori Garcia had this to say:
Had my vehicle serviced here and it was a great experience. Great communication and got me in fast and done with the job same day, and great pricing 🙌

On 3/25/2026 Bob Moore had this to say:
So far so good, I just installed it after having them rebuild it.

On 3/12/2026 Arlette Reyes had this to say:
Very Honest place that knows what they are doing!! Recommend 100% for any transmission repair need!

On 3/2/2026 Chris F. had this to say:
They rebuilt the transmission in my work truck and got me in and out. It shifts great and the team was very nice and went over what they found out was wrong. They got me back up and running and in no time and the truck has never shifted this good!

Contact Us

Certified Transmission Inc
3703 Grape Rd Mishawaka, IN 46545
Phone: (574) 256-5528
Email: certransmission@aol.com

Where To Find Us

Payment Types Accepted

American Express, Personal Checks, Debit Cards, Discover, MasterCard, Visa

Our Hours

Monday: 8:00 AM - 4:30 PM
Tuesday: 8:00 AM - 4:30 PM
Wednesday: 8:00 AM - 4:30 PM
Thursday: 8:00 AM - 4:30 PM
Friday: 8:00 AM - 4:30 PM