Visited Jim and ATO to discuss options for my 72 C-10. Jim took time to discuss options and ask questions about future enhancements that I might consider that impacted my decision. Jim let me see his operation and current build while thoroughly explaining how transmissions work and his process for rebuilding. His facility is the cleanest transmission shop (any shop) ever visited. read more

This the best transmission shop in CA. Jim is always ready to help with any situation. I have used his transmissions since the 90s.

I purchased a race C4 back in early 80's with a trans brake and convertor. He said my car would run the same or faster ET than my 4 speed and if not he would refund my money. He was correct because it ran the same numbers. read more

This is the type of business you always hope you find when looking for services that you need. ATO is family owned, 45 years in business, huge track record of success, and a shop that resembles a Dr's office more than a transmission shop. We have taken many trucks that have had issues to ATO and we still have not bought a rebuilt transmission. The problems always end up being sensors, wiring harnesses, driving practices,etc. I know if we had gone to the dealership or any other shop for that matter we would have been sold a new tranny. Also the amount of time invested in troubleshooting the issue at no charge is amazing. I guess having a business for 45 years allows you to focus on what makes you happy and not just what makes you money... read more

ATO Performance Transmission - Company logo - Transmission Repair Near Me - Rancho Cordova, California

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Great customer support way beyond the initial service. Jim built are trans over a decade ago and still takes are questions and lends advise as we make mods to the car. Top notch! read more

ATO Performance Transmission - Jim's support at ATO has been amazing. Pops needed an automatic due to bad knees. Jim's tranny kicks ass behind this Roush engine. - Transmission Repair Near Me - Rancho Cordova, California

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I've spent an entire year researching and locating all options for a transmission replacement to my aging 48re and I have never felt more secure in a decision that I made regarding major mechanic work than I am now. Jim's shop is as meticulously spotless as the work that he put into my 48re rebuild and I am one very happy customer! Unlike other places that were quick to sell me junk "bolt on" units, Jim actually took the time to show and explain the "what" and "why" of all the materials, components, and work that would go into my new Heavy Duty 48re transmission rebuild, giving me a better appreciation and understanding of what was going to get done. Getting a transmission rebuild is costly work no matter where you go, but I cannot stress enough how important it is to me personally to have a shop take me through the details of the work to be done. Shops that avoid this leave me with a sense of apprehension and doubt, but not with Jim and crew, those guys really know how to make you feel sure about the work and that every penny spent was well worth it! Jim and Scott did a kick a** job on my rig and I couldn't be happier, "Thank you guys!" and I'm totally sporting the bumper sticker! =D read more

Awesome, awesome shop!!! The other reviews explain it all. But there is no doubt that this is the best shop in town. 4/15 UPDATE: Just got the 48re in my 2004 Dodge 2500 rebuilt. It's incredible!!! If you're comparing shops, make sure you compare apples-to-apples. I shopped two other of the "top" places in town, and if you add to their price the additional parts and work that they would need to add to build a DURABLE transmission , you'll find that ATO is very comparable!! Plus you get a longer warranty, and a transmission that will most likely last 300k instead of 150k like the others!! read more

ATO really got me out of a jamb. I ordered a transmission from an online company and when I received it the bell housing was broken. I didn't have the time to ship it back and wait for the repair so I took it to ATO where Scott and Jim swapped everything into a new transmission case. They were quick and also made a few adjustments that the previous rebuilder missed. Their shop is spotless, well lit and doesn't smell like a transmission shop. Take you transmission to ATO if your are looking for the absolute best. read more

My chevy 700r4 was built 4 times and never drove more than 130 miles before it failed. Took my truck to Jim he rebuilt a 700r4 for me, after 500 miles I had a problem and he took it right back fixed it (under warranty) and now its awesome. Great customer service!! read more

Today I went back to Jim to have him drive the car and you tell me if ok so he dropped what he was doing took my car for a ride. Well after that everything was ok which made my day, by the way it is a show car and he built the tranny now that in my book says he has 1 hell of a customer for life and anyone else I know his whole operation is a CLASS ACT. Good luck in getting in he is in Demand. read more

Took my car in last summer--wasn't given a quote before hand but assumed it would be about what the other 2 shops quoted. Went to pick up the car, the bill was twice as high as the other quotes and it was never test driven as it smoked like a freight train when I pulled it off the rack and started to drive home--fluid on the headers. Car drove fine for the first 200 miles and I was happy, but as the weather turned cold it now won't shift into 3rd gear for the first 3 or so miles--stuck in 2nd. I called Jim and he told me that there are several types of metal in the trans and it won't shift right until they are all warmed up. Doesn't sound right to me--I am sure Ford didn't design the C4 to not shift into drive until the car was warmed up. I was hoping I could bring the car in for him to see but didn't sound like he was interested in finding the problem. Maybe I am an isolated incident but it would be nice to be treated like an important customer. read more