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The trained and certified technicians at AC Transmission Center specialize in transmission repairs and rebuilds. We are able to quickly and accurately assess your transmission problems and perform any necessary repairs, large or small. Come in today for a transmission check. I have a SAS (solid axle swap) 2002 Toyota Tacoma dual cab 4WD.

Mike from AC Transmission Center answered the questions I had about doing work on a vehicle like mine which is heavily modified. He assured me that what I had described about my truck, they were well equipped to handle the job.
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To service today's modern transmissions requires a high degree of technical skill and years of training. This is where AC Transmission excels. Our certified technicians perform everything from routine maintenance and minor repairs, to complete rebuilds on automatic transmissions, including all domestic and most foreign vehicles, light and heavy duty trucks, 4x4s, SUVs, and motor homes. Do you own a vehicle that has a manual transmission that grinds, is hard to shift, or jumps out of gear, AC Transmission will repair that too.
If your transmission stops working, not all hope is lost. Bring your vehicle into AC Transmission in Denver, CO, for professional transmission repair. Our transmission shop boasts over 100 years of combined experience performing transmission repairs, so you can rest assured that we will find the best way to resolve your transmission issues.
The clutch in your car is designed to help you shift the transmission from gear to gear as needed. This complex, important function in your vehicle is made to specific manufacturers standards. Do not compromise the performance of your clutch by allowing shops to conduct substandard work and install inferior parts.
AC Transmission provides complete drivetrain U-joint and driveshaft diagnosis and repair services. Our drivetrain specialists recommend your driveshaft and U-joints be inspected regularly for optimal performance of your vehicle. Trucks and SUVs commonly have drive shaft slip joints that require lubrication.
Reviews (21)
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Tammy Gleisner
Jun 22, 2022
This is by far the best experience I have ever had. This group of people are not only professional but knowledgeable, ethical, honest, caring and friendly. I brought my 2015 Ford Focus in for a diagnostic test. And even though they were unable to repair the issue, they provided me with a reputable repair shop that can. All within 24 hours. That is unheard of.

And today when I picked up my car and asked what I owed the response was ""nothing, a good review means more than any money". Hands down a class act. If I ever have issues in the future, no question where I will go. Thank you all for an extraordinary experience.
Ryan Balows
Jun 03, 2022
Amazing- 1st time user of AC Transmission- Friendly and professional on the phone and was even better when I picked up my van. The night time drop off felt safe and secure. They called mid-morning with an update. And finished on time. The waiting area and bathroom were clean. I did not feel like was taken advantage of. I would feel safe sending my wife there to pick up her car. Awesome all around.
Derek Gonzales
Apr 18, 2022
My jeep needed a new battery and unfortunately it is not one of those simple batteries you can just exchange out and be done. Luckily AC transmission had all of the right tools and the right knowledge to fix it. The people who work here know exactly what they are doing and not only that but they get things done right away. My jeep was taken Thursday night just before closing and they had everything ready early Friday morning.

Everyone I interacted with was great and very personable. The pricing is also great! They really want to help people here! I HIGHLY recommend AC transmission for all of your car needs. 10 out of 10!
Steve Ebner
Feb 14, 2022
After getting a new transmission replacement quote from the local Nissan dealership, I called AC Transmission for a second opinion. I soon learned why they continue to get great reviews. Their expertise with transmissions is unmatched in Metro Denver. They carefully explained their impressive diagnostic process and potential repair options. The customer experience was fantastic and I'm glad to recommend them to family and friends. Best of all, I saved a lot of money and got my repairs done in less than a week!
Keith Silverman
Jan 25, 2022
This such an honest, professional, caring and friendly group of people at AC Transmission. And I never even met them! I am far away, in Illinois. My daughter is using my car in Denver & it started behaving badly. It was obviously transmission related & seemed like it could have been the end of the line for this car (and my daughter would be stranded without wheels).

I didn't want her to keep driving it & needed it to get looked at right away. I found AC Transmissions online, (read the great reviews!) & called Mike. I explained the situation & Mike agreed that this needed to be diagnosed immediately before we really damage the transmission. This phone call occurred at 2:00 today & my daughter was there by 3:30.

They immediately inspected, test drove, diagnosed & repaired the problem. We had some other service done elsewhere & they overlooked that the trans fluid was extremely low. Luckily that was the main problem. I shouldn't say this, but they didn't even charge us for the service. What a great bunch of guys! If Mike, Larry & the guys didn't treat this situation the way they did, I would be shopping for cars in the next few days.

You guys saved the day! Thank you so much! Keith They were extremely friendly to us. Next time I visit Colorado, I will make a special trip to AC Transmission to meet these guys! Thank you so much! We'll be back for maintenance service & any future repairs needed.
Andrew D.
Jan 24, 2022
Awesome staff and super friendly. They walked me through and communicated every step of the way. They had my repairs done in a timely manner and it was done before they said it would be done. The vehicle was finished during a mild snow storm and I live an hour away so they let me store my car on their property till the roads cleared the next day. I shopped around and for the repairs they were done you can't beat the price. I would highly recommend and I would use them again!
Payia Lor
Jan 20, 2022
I had a leak coming from somewhere, and turns out it was a radiator leak, along with other turbo related issues. They were excellent with their communication and they kept me up to date with every detail. Everyone showed extensive knowledge and were honest with what they can and cannot do for me, which gave me full confidence in their work. I've been to many shops and I would highly recommend this one because of how friendly, communicative, and how quickly they were able to help fix a major issue. I am very satisfied and would say they did a thorough job. I will definitely be going back for any further issues.
Hanna Silverman
Jan 17, 2022
This was the best car repair experience I have ever had! Everyone was extremely nice and took the time to get to know me. They explained everything they were doing and really showed me they cared about my situation. They did everything they could to get my car fixed as soon as possible. I recommend this place to anyone in need of their services and I would give them six stars if I could! Thank you guys for taking such great care of me and my car! I really appreciate you.
Jeff Kraus
Jan 09, 2022
My Jeep Grand Cherokee was overheating and seemed to be sluggish so I took it in to have them look at it as I thought it might be a transmission related issue. They were able to to quickly run it through their various diagnostic procedures and determine a faulty thermostat was the culprit. They fixed it and had my car back to me in a short amount of time for far less $$ than I was anticipating would be needed to fix my car. I was very impressed by their professionalism, friendliness, honesty, and overall service experience.
Cptyurpdurp
Oct 19, 2021
My old Jeep broke down on me and I was in a pinch. I called Dave minutes after it happened and they were able to schedule me the next morning in the heart of busy season for the industry. I had my vehicle towed there and was met with exceptional service. Within two hours they had a quote prepared. Unfortunately due to the age of my vehicle it was not worth it to have the repairs made so I declined. Dave was very understanding of my situation and didn't treat me any differently even though I declined the repairs. The facility is clean, well organized and one of the most professional repair facilities I've ever encountered. 10/10 would recommend doing business with these guys.
Bridgette F.
Jul 07, 2021
Honest, friendly, and incredibly professional. The guys at AC Transmission and Total Car Care made me feel welcome and comfortable as a young woman who knows very little about cars. They even washed my car after discovering a significant oil leak. They care about keeping you as a customer rather than charging you as much as they can. They've been in business for decades and you can tell it's because of excellent leadership and commitment to quality work and service. 10/10 - great experience and results!
Leandra O.
Jun 24, 2021
Amazing team at A/C transmission! They were able to test and diagnose the issue with my car in a very timely manner. I was worried it was the transmission, but luckily the team found out it was a much simpler fix. I would recommend this crew to anyone.
Analicia Q.
May 11, 2021
Great customer service! They do amazing service and I don't feel like I'm getting over sold!
Dan G.
May 07, 2021
It was very easy to set up an appointment to get my Jeep looked at here. The men that helped me out were easy to talk to and seemed incredibly helpful and honest regarding the nature of repairs for my transmission. While I hope to never have use a place like this again, I will definitely be coming back here if there are any more issues down the line!
J. S.
Feb 02, 2021
Great customer service. Very happy with work.performef. I will use them again in the future.
Audrey B.
Jan 08, 2021
WOW! I cannot recommend AC Transmission enough! I am always hesitant of taking my car to a new shop because I always feel like I'm being taken advantage of and walk out paying an asinine amount of money for things I don't technically need. That was the exact opposite here. I had originally brought my car in for an odd sound it was making and an oil change.

The gentlemen over at AC Transmission went above and beyond to diagnose the issue, walk me through their process of repair step-by-step and answered ALL of my questions. From the beginning to end of my transaction, they were kind and completely transparent. Not sure you can ask for more from an auto repair shop. Thank you for restoring my faith in the automotive industry!
Pete P.
Apr 29, 2019
These guys really took care of my car I have a Nissan Murano that I bought foolishly without doing research and the year I got apparently has a lot of problems with the transmission so they diagnosed the transmission issue for free that was perk number one then they were able to change the transmission in just three days and get me on a payment plan so I could pay the balance of the work they did it did act a little funny after I picked it up but I called them took it back and they looked at it again got the problem resolved right away so now my vehicle is running perfect I really appreciate the hard work and special attention they showed to my problem I have two kids another on the way and they did everything they could to make me feel welcome and safe with there work I would definitely recommend them to everyone who needs work done
Ryan H.
Oct 03, 2018
Nice guys, I was just back in town after having recently moved out of state and dropped the car off and then walked home and got to see them test driving the car very responsibly which was comforting to me. I had called about 10 different places trying to find someone who didn't charge $200 for a transmission flush, and when I called A C I was told it would be $120 for a transmission flush but then when they called to confirm the price before performing the work it was upped to $200 but I had to be on the road to Kansas City the next day so I pulled the trigger on that.

About $70 for the transfer case service which is very fair, but $91 for an oil change with an MG filter (O'Reilly's price leader) which was a bit of a kick in the crotch to me. Four stars though because responsibility while test driving is a huge deal to me, no one forced me to say yes to those prices I just didn't have a choice if I wanted to get on the road, and they're great guys I could hear them on the phone every time I came in and we all hate transmission problems right I am sure these guys get yelled at all day but all three workers I talked to were in great spirits every time I talked to them.
Andrew C.
Feb 13, 2015
This place is great! Took my truck in and they gave me the best deal in town. They told me if there are any issues bring it back and we will take care of it. I took it back because something wasn't sounding right and they took care of it and were very professional. It is hard finding a good mechanic that isn't trying to screw you. Highly recommend this place. Great service and they stand behind their work!
Ashley B.
Jan 14, 2015
STOP! If you are in need of any small repairs roll right on by. I can't speak to their transmission work but trust that you will pay through the nose for labor at this shop. I endeavored to do the work myself and found I could accomplish the task with only hand tools in a third of the time they quoted me. I recommend it if u are able.
Adrian A.
Jun 10, 2014
Avoid at all costs. This business has been ripping people off for 50 years. They swap your transmission with another and call it rebuilt. Way over priced, and dis honest. When I confronted the shop with questioning about the transmission that was replaced, he was offended. My transmission was suppose to be rebuilt not replaced. Mark your transmission before you turn your vehicle into a shop that is suppose to only rebuild and keep the case. Avoid this business.