DISHONEST THIEVES! DO NOT USE THIS FAMILY RUN BUSINESS! They stole $6000 from me and did not fix…read moremy van! I took my van in to have the transmission fixed August 8, 2025. It was shuddering, and the check engine light was coming on. I was notified it was "fixed" about a week later. I paid $6000 and took the van. It was still doing the same shuddering and check engine light coming on. I told Dylan and he said, "oh it will just go away when you drive it more". A lie. Any mechanic knows things just don't "go away". It went back to the shop to be "fixed". About 2 weeks later it was returned and I was told its "fixed". I drove the van to Lake Tahoe and it was shuddering and dong the same thing as when I brought it in the very first time, not fixed! After a week in Tahoe they reluctantly came and drove it back to Santa Rosa. This back and forth went on for about 2 1/2 months. I paid $6000 and the van is still operating the exact same way it did when I brought it in August 8th. I called the Bureau of Automotive Repair and they went to the shop and verified the van is not fixed and told the owner, Dylan, to return my van AND my $6000, (per my request) because the job was NOT done. Dylan said he will return the van on October 31st, but refused to return my money. When the Bureau of Automotive Repair tells a shop owner to return money because they didn't perform the service that was paid for, you know that business is corrupt and needs to be shut down. It is October 29, 2005 and I asked for the van back and my $6000 I paid 2 months ago, because the van runs exactly the same as when I brought it in, it's NOT fixed. I spent over $7000 on hotels because I do not live in Santa Rosa, as well as lost work, as well as an unbelievable amount of stress. Aside from not fixing the van, I had to constantly call the shop to get updates, they rarely called me to update me as to what is going on. Its like they put the van in the back and didn't care to fix it because they already had my money! Meanwhile my hotel bills were piling up. Vaughan's Transmission and Auto Repair took my $6000 and didn't fix the problem I hired them to fix. THAT IS THEFT! DISHONEST FAMILY, DISHONEST BUSINESS! I will be suing for damages, unreasonable time for hotel costs, as well as loss of work because of this incompetent business. DO NOT USE THESE INCOMPETENT PEOPLE! Feel free to contact me me for more.

Great people and Great service! I recommend them to anyone who's having issues with their cars…read moresince i've taken my car there!

Extremely honest, great price, excellent communication during the process and fast, no upselling…read more Greg knew it was for my teen son, he replaced the transmission and gave me tips on what else was needed in the future. ZERO pressure! Can't recommend this shop enough. Thank You!

Roman is honest, advising me not to spend too much money on my car. It's a lemon, but I'm trying…read moreto eke out as much life as I can from it. He diagnosed and fixed 2 very tricky issues before the end of the day. Would definitely recommend!

I recently visited Transco Transmission & Auto Repair while traveling through Santa Rosa during my…read moreretirement journey with my wife. Being from Texas and far from home, I needed a transmission fluid change and oil change on my 2500 Ram diesel. Armando Barragán provided service that was not only professional, but exceptional in every way. Armando offered to pick me up from where I was staying, seven miles away, which is a level of customer care you don't often see. From start to finish, he made the entire process straightforward and stress‑free. I felt well taken care of and fully confident in the work being performed. While servicing the truck, Armando identified several key issues that needed attention -- items that could have caused problems down the road. His honesty and thoroughness were greatly appreciated. The cost was reasonable and fair, especially considering how easily repair bills on diesel trucks can escalate. Thanks to Armando and his team, I now feel safe and comfortable continuing my travels across the United States. If I find myself back in Northern California, I would not hesitate to return to this shop. I highly recommend Transco Transmission & Auto Repair for anyone seeking reliable, honest, and high‑quality service.

TransCo did work on my Mazda transmission and car was never the same. As a woman I can't recommend…read morethis place unless you want to be mansplained. Not willing to do what was necessary to fix the problem. Finally my mechanic found a transmission leak after they did the work and insisted it was fine and they addressed that after multiple calls and visits. But after they worked on car shifting was sticky and sometimes totally froze up. Sold the car.

Great experience with Santa Rosa Hydramatic! i had them inspect a vechicle for me, and they did…read morethrough job. They were professional, honest nad easy to work with throughout the whole process. I really appreciated their help and would definiteyl recommoend them!

I had my 86 Corvette at a shop in Santa Rosa for engine and transmission replacement. The…read moretransmission was taken to SR Hydramatic for rebuilding with a shift kit installation. When I received the car i complained that it shifted sluggish and could not tell shift kit was installed. Within a year the torque converter failed. Took it back and they serviced and replaced the torque converter. This car had less than 2500 miles on rebuilt tranny and engine. I drove it to my new home in San Tan Valley Az, 770 miles. Two days later 15 months after SR Hydramatic had serviced and replaced torque converter it failed again. Steve the shop owner insisted someone had messed with the throttle cable adjustment which he insisted was the cause of the first failed torque converter. NO ONE HAD TOUCHED THE THROTTLE CABLE AND STEVE REFUSED TO ACCEPT IT AS HIS BAD REBUILD I took the car to a shop in Queen Creek Az with reputable trained technicians, i asked them to examine the tranny. The torque converter failed was literally fried as well as the bands and bushings. THE MAIN CAUSE OF THE FAILED TRANSMISSION WAS DUE TO SR HYDRAMATIC INSTALLED AN UNDERSIZED PUMP WHICH WAS DESIGNED FOR A 6 CYLINDER ENGINED. THIS CAUSED EXCESSIVE HEAT WHICH FRIED THE TRANNY I HAD CALLED STEVE SEVERAL TIMES AND LEFT MESSAGES FOR HIM TO CALL ME SO I COULD TELL HIM WHY TRANNY FAILED. HE WOULD NOT ACCEPT MY CALLS OR CALL ME BACK SR HYDRAMATIC DOES NOT REBUILD TRANSMISSIONS ACCORDINGLY TO SPECIFICATIONS. PLEASE DO NOT HAVE THEM WORK ON YOU TRANSMISSION The repair shop i used for engine and tranny replacement,!reimbursed me for the cost of having the transmission rebuilt in Queen Creek Az. Thank you Wayne owner of Wayne and Sons Automotive Repair in Santa Rosa, Ca

Wonderful people. I was in town visiting my parents and had a check engine light on my Dad's car…read more They were busy, but did a quick scan, let me take a photo of the code and reset it for me. They have been working on our friends cars and they are all happy. Good to have a little local shop to take care of my parents cars.

Recently moved to the area and was looking for a new auto repair shop. Called a few places and this…read moreshop definitely was the most accommodating and friendly over the phone. They also had the best price out of any of the other shops that I called. I had some specific requests for my repair that they accommodated. They were able to get me in the next day and I had my car back that afternoon. Highly recommend this shop and will be taking my families vehicles here from now on!

This guy thought it would be a great idea to setup an appointment with me for a VSSI inspection…read moreknowing he doesn't have a license for it. He scheduled my appointment for September 1st which was 2 weeks out. I Cancel my other appointment in Napa because it's closer. I request the day off from work and also ask a buddy to barrow his trailer. Work a 10 hour day go to my friends and get trailer load the bike up so I can bring to appointment today. Show up today and dude says "sorry bro I don't have my license" what in the actual ... you got to be kidding me dude? This is worse then having bad work done, you knew you didn't have a license and still setup appointment....

I WOULD NOT RECOMMEND THIS SHOP TO ANYONE !!!!!! I stopped…read morein at High Tech Auto Service to ask if they (Francisco) will do a diagnostic test on my son's car after seeing puddles of oil on the engine block. I sprayed gunk engine cleaner and high pressure wash it off myself at the car wash next door to remove all of the oil. He charged me $100 for the diagnostic test and explained two hours later, that it was the pvc valve leaking and overflowing because it had too much oil from the previous oil change. After my son left with the car, the next day it stopped running and another puddle of oil formed on the engine block. I had it towed 98 miles for a real diagnostic test and Francisco said it was how my some drive because he was a young man. I spoke very respectful to him and informed him that I understand his time and attempted diagnose, but clearly it was mis-diagnosed and he disagreed. He made a fuss about it and eventually offered my money back and harshly said, "I never want to see you or your son face ever again" Being a business owner myself and dealing with customers for a number of years, I WOULD NOT RECOMMEND THIS SHOP TO ANYONE !!!!!!! He was very disrespectful and no type of customer service.

Nor Cal has the reputation of being the best transmission shop in Sonoma County because that's what…read morethey are. Don recently helped me with my 71 year old truck transmission. He made some recommendations, did the necessary work, made it safe, reliable, easy to drive again and for a great price.

These guys may-be one of the most honest/solid workplaces I've ever experienced. Spoke to the owner…read moreabout having my truck transmission looked at because it had thrown a code and went into limp mode. I opted for a tow package transmission package, and the guys at Nor-Cal delivered. The owner was very transparent and got me my truck back on time and went above and beyond. Glad to call myself a customer at Nor-Cal transmission.

They have worked on all my cars for over 20 years One truck…read morethat I still have had top end rebuild I've put more miles on it sense the rebuild then it had when it was done that says a lot the mechanic still works there and always says you still got that truck whice I do

I brought my car in to get smogged and was failed by them three times. I followed all repair…read moreinstructions and was still failed. After the third failure, something didn't feel right, and I took it to another smog shop and was passed in 10 minutes. Very frustrating experience to say the least.