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ATS Of Janesville, DBA Automatic Transmission Service
About Us
Automatic Transmission Service brings more than 27 years of hands-on expertise to Wisconsin drivers, earning a reputation as one of the region’s most trusted names in transmission repair and rebuilding. Specializing in domestic vehicles, their team follows a meticulous service process that includes fluid replacement, detailed pan inspection, and thorough hot flushing to maximize performance and longevity. Every rebuild is approached with precision—complete disassembly, careful inspection, and replacement with quality components—always backed by a dependable warranty. Based in Janesville, WI, they proudly support drivers throughout the surrounding communities with workmanship grounded in integrity, reliability, and decades of experience. When your transmission needs expert attention, they’re the team you can count on.
Our Professional Associations
- Chamber of Commerce
Our Certifications
- Insured
What We Offer
Our Specialties include:
- ATS of Janesville and Rock Diesel of Milton have built their reputation on honest, dependable auto repair and service. Their technicians take pride in handling everything from routine maintenance to complex mechanical issues, treating every vehicle as if it were their own. Whether it’s diagnosing a problem, making a necessary repair, or providing preventative care to keep vehicles running smoothly, they combine skill, precision, and true customer-first service. Drivers trust them because they don’t just fix cars—they keep families, workers, and businesses moving with reliable workmanship and a commitment to getting the job done right the first time.
Our Services include:
- Transmission Services, Diagnostics & Rebuilding: ATS of Janesville and Rock Diesel of Milton specialize in keeping your drivetrain performing at its best. From routine transmission service to full rebuilds and replacements, their technicians bring years of expertise to every job. They use advanced diagnostic equipment to pinpoint issues accurately, saving customers time and money. Whether your vehicle needs a simple adjustment, a complete overhaul, or anything in between, their team makes sure it shifts smoothly and reliably.
- Full-Service Auto Repair: Both shops provide a complete range of automotive repair solutions designed to keep vehicles running strong. From everyday fixes to complex mechanical work, their technicians can troubleshoot problems quickly and get customers back on the road with confidence.
- Engine Repair & Maintenance: When an engine isn’t running the way it should, these teams are equipped to diagnose the cause and restore its performance. They handle everything from minor repairs to major internal work, ensuring engines operate efficiently, safely, and with maximum longevity.
- Oil Changes & Preventative Maintenance: Routine maintenance is at the heart of vehicle health, and both locations offer fast, thorough oil changes to protect engines from wear. Their preventative services help extend the life of every vehicle and reduce the likelihood of costly repairs down the road.
- Alignments, Brakes & Rotors: To keep customers driving safely, the shops provide precision wheel alignments along with complete brake system services. Whether it’s new pads, rotors, or resolving issues with stopping power, their technicians make sure every vehicle handles and brakes the way it should.
- A/C Service & Repair: From refrigerant recharges to full component replacements, their A/C services ensure drivers stay comfortable in every season. They diagnose cooling issues accurately and restore systems so they perform efficiently and reliably.
- Servicing Most Makes & Models: Whether it’s domestic or import, gas or diesel, everyday driver or work truck, ATS of Janesville and Rock Diesel of Milton have the tools and experience to service most makes and models. Their technicians are committed to providing dependable repairs for the vehicles their customers rely on every day.
Our Brands include:
- Transtar
- Certified
- GOEREND
Testimonials
On 7/15/2025
Richard Heine
had this to say:
Janesville transmission service is the best to the best they go out of their way to make sure things are right and they work With you and your time of need
On 3/16/2025
M.G. Bumpus
had this to say:
Great knowledgeable service with a smile.....
On 4/24/2024
Sharon Judd
had this to say:
The dreaded engine light went on in the Toyota Matrix and our mechanic said take it to the dealer. The dealer wanted $200 to access the issue and most wanted about the same. I knew the issue was related to my trans so I called ATS since several people at my gym recommended them. They did an amazing job for me. My car drives like new. The only issue, ATS is VERY busy and there could be a wait, but the wait is worth it. Very knowledgeable and honest. Highly recommend.
On 10/25/2023
Connie Vanderlinden
had this to say:
We just want to say what a great job Mason did to get our Denali back on the road, where two other shops were unable to get it done. He went above and beyond and we are very thankful for that! A thank you to everyone that’s had a hand on the repair. We give you a 10/10. And we will highly recommend your shop. Kevin & Connie Vanderlinden
On 9/4/2023
Midwest Junk Removal
had this to say:
Quick service, great price. Friendly
Contact Us
ATS Of Janesville, DBA Automatic Transmission Service
4365 Milton Ave Janesville, WI 53546
Phone: (608) 754-7737
Email: shop
One Mile North of I-90 and Highway 26
Where To Find Us
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Payment Types Accepted
Visa, MasterCard, American Express, Discover, Debit Cards
Our Hours
Holiday Hours May Vary. Please Call For Details.
Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
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