Transmissions are heavy-duty pieces of equipment that are designed to last a long time. But like any other machine, they’ll eventually wear out and need repair. Automatic and manual transmission repair and fluid flushes are common services, but scheduled auto maintenance can prevent major repair and transmission replacement.
McCullough NAPA Auto Care has ASE-Certified technicians with years of transmission repair and replacement experience near Alpharetta, Georgia. Contact us to schedule your appointment and to receive your complimentary multi-point inspection with scheduled service.

Schedule Transmission Repair or Replacement in Alpharetta, GA
A car’s transmission is responsible for ensuring that the right amount of power goes to each of its wheels at any given speed. Your transmission must work properly, or it may negatively impact other components of your car. Please complete the form below if you have any questions about transmission repair or replacement or if you’d like to schedule a time to bring in your car. We are only a short drive from Alpharetta, Georgia.
Signs That Your Transmission Needs Repair or Replacement
Transmission repair or replacement is not a service that you want to put off. A faulty transmission can cause other parts to wear out faster, so we urge you to bring your car in for an inspection if you notice any of these signs your transmission is failing.
1 – Fluid Leak
Transmission fluid is red and smells sweet. Look under your car after it’s been parked for some time to see if you have a transmission fluid leak.
2 – Burning Smell
Old, worn-down transmissions will emit burning smells as they age. This could also be due to your transmission needing a fluid flush. Either way, burning smells are never good, so bring your car in ASAP if you smell burning.
3 – Slipping Gears
It’s unsafe to drive a car with slipping gears as you may not have complete control. You should never drive a car that has gears that slip. If this is the case, schedule service with us soon.
4 – Gears Refuse to Switch
Likewise, if your gears refuse to switch, that’s another problem. This is a tell-tale sign of a bad transmission, but a fluid flush typically will solve the issue.
McCullough NAPA Auto Care has been in business since 1968. During that time, we’ve served Alpharetta area drivers with quality auto and transmission repair service that we are proud of. Please don’t hesitate to contact us with any questions about transmission repair or replacement for your vehicle.
McCullough NAPA Auto Care Proudly Serves
Serving Zip Codes:
30004, 30005, 30009, 30022, 30076, 30504
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What more is there to say? These guys are amazing. Their service is very thorough and quick. I was so worried about the cost of my repair but Eric and Brian put me at ease with their extremely reasonable prices! My truck is running like it's brand new again and I can't thank these guys enough!
Nicholas Kerr
March 1, 2020Quick and excellent service. I was turned away at my regular mechanic because he said he didn’t know how to do a transmission fluid change. This was my first time ever going to McCullough auto care, and I was very happy with my service. They were able to see me immediately and were patient with me considering the circumstances. Eric was great, and even matched the prices of another mechanic down the road. I will be back! Would recommend!
Caitlynn McFee
November 19, 2019 -
I was so impressed with these guys!! Family business and the guys are professional, efficient, and personable. They got my part quickly and fit me in so I could come while my kids were at school. They went the extra mile (no pun intended) to consult with another auto body shop to make sure the repair was stable. I will be coming back for all future auto needs and will recommend them widely.
Deb in Atanta
September 10, 2019Able to fix issue with my 2011 truck other shops could not address- very hard to diagnose mechanical issue another reputable shops couldn’t figure out. Good prices, done on time, and with expert mechanics. Will have them work on all of my vehicles and highly recommended. Support a family owned business for a change!
B. BB
February 23, 2021 -
My parents and I have been taking our cars there since the beginning. Great, hardworking guys. The only mom and pop shop left in Sandy Springs.
kirby caramelo
January 2, 2022Overall, McCullough car repair has done an outstanding work on my car. They are professional, honest, reasonable with cost and does the work on time. Most especially, Eric and Wes, they are top notch and I am highly satisfied with the outstanding work on my car. I highly recommend this car repair shop to my family, friends and all over Atlanta. I am extremely happy and highly satisfied with my car repair as well as the car repair cost. Thank you for the outstanding work and the job well done.
Jocelyn Dudley
July 22, 2021WOW!! An amazing experience! Traveled here from Kansas to apartment shop for my daughter who is relocating and my husband was unable to join A part was dragging under the car so we popped in to see if they could help. They were so kind and helpful. Restored my faith in this world. Good people do exist!!
Angela Drybread
June 18, 2022 -
We have been depending on McCullough's at least since 1997, when we purchased a home only a few blocks away, walking distance really. Had our emissions test a few days ago and want to acknowledge Jack, who completed the tests quickly. I asked him to determine why the backup camera was not in the proper position. It took a bit of time and ingenuity to get everything right. Thanks Jack, for the excellent service.
Dennis Crow
November 21, 2021Eric and his staff were great and helpful. The pricing was fair, and they let us know every step of the way what was wrong and what needed to be changed.
jcwolves .
June 28, 2020Great customer service! Eric and team did an awesome job coordinating their busy schedule with the schedule of my girlfriend and myself so that we would have a car during the work week and then trade off cars when the other was ready. They are extremely friendly and it felt like they had us as the customer in mind. Highly recommend!
Andrew r
June 10, 2021 -
I had a check engine light on Saturday afternoon, ended up being an engine coil pack needing to be replaced. It was obviously super busy and I knew I would need to leave it until Monday to get looked at. Staff was very informative and communication was excellent. Got it looked at Monday and ordered necessary part to come in the next day. Went ahead and did the spark plugs as well since I was nearing 60k miles. Picked it up after lunch with no issues. Seems like they do really well with the small space provided and very busy area right off 285
Jason
July 21, 2021I’ve taken my cars here over the years and have been delighted w the team. They’re honest, professional, knowledgeable, and will shoot you straight. Prices are fair and they’ll tell you abt issues that may or will arise in the future and to keep that in mind for future reference. Overall an A
Alex Cameron
August 26, 2020 -
Eric at McCullough has been taking care of my family's [multiple] cars for over 10 years now. A Volkswagen, a Nissan, and 2 Acuras: They've done minor repairs all the way to major transmission replacements. Eric is trustworthy, honest, and tells you what really needs to be done versus what can wait. Their prices seem reasonable (although in fairness I haven't been anywhere else recently b/c I'm so pleased with them), they are timely, and always communicate what the car needs in detail. I can't recommend these guys enough!
Juliana Buttram
September 19, 2019This place is a life saver. Great communication, great service, and very professional people. Eric worked with me through my whole repair. Kept me updated through out the process and fixed the problem on my car at a fair price. I will definitely make this my new place to go for all my car repairs and maintenance needs, along with sending my friends their way.
Angela A
March 10, 2020 -
My experience here was great! Fast, curious, and fairly priced. I didn't think a repair shop like this existed. I'll be a lifelong customer.
Walt Anthony
August 6, 2020Honest pricing..."as promised" timely repairs... and good customer service! - I keep coming back to McCullough with a different vehicle (Nissan Truck/Honda Truck/Honda Car) and they knock it outta the park every time!
Michael Smith
January 25, 2020Eric and Company are a first class operation! They get it right the first time in every time! They will pick me up and drop me off to make it 100 times more convenient. They treat me like family and look after my best interest not just their bottom line! These are the kind of people that I value doing business with
paul yurfest
February 15, 2021 -
I really cannot count the number of times these brothers have taken care of me, my family and all our various vehicles. We have been loyal customers for more than 20 years! They have done everything we have needed on cars, trailers, used car evaluations for purchase, tank drops, and all the basics. They are very trustworthy and will give you a honest answer on everything and a reasonable estimate on what it will cost to resolve it. They are super busy, so plan to wait a day or two longer than you might somewhere else, but it is worth it!
Ashley Marratt
May 3, 2022Brian and the team were fantastic with handling my issue. In fact they discovered a major error which occurred when I had my last oil change done at a quick oil change place, which turned out to be the cause of my issue. They took pics of it and wrote out an explanation for me to give to the previous oil chance place. Because of their extra effort, I am getting reimbursed for the error. I highly recommend Brian and the team!
Scott Braswell
February 3, 2022I know for me one hard thing about choosing a mechanic is brushing off all previous notions I have about mechanics Potentially not treating my car how they would treat their own car. This place has done more than exceed my expectations. I got a phone call for every update, I got a thorough description of what was to be done and what was wrong, not only that, but where the dealership said it would take them two weeks to fix my car, these guys did it in less than 24 hours. I have never been happier to spend $300 in my life. Anything I need in the future, you can be sure I’ll bring it here.
Erik Davis
September 10, 2020 -
This place is exactly the kind of service you come to expect. Great service, timely, and they never assume I don’t know what I’m talking about because I’m a girl.
Susan James
November 12, 2021This shop is the best. They did everything they could so I would have minimal time without my car such as having all parts ready before they scheduled the repair. They are super nice and no surprises on price. They opened up my bumper and found a part was damaged. They could have left it the way it and no one would have known but they were honest and did the right thing. I recommend 100%.
Graham Reifert
July 24, 2019 -
The team at McCullough Auto Care are so friendly, thorough, and timely. They know the cars bumper to bumper and how to properly diagnose the problem as well as do scheduled maintenance. They really work with you to do what is necessary to make your car safe and not hit your wallet too hard! I can say that I trust Eric and his team with our cars.
Victoria Mills
October 29, 2019McCullough Auto Care has earned our trust over the past two years by consistently giving us quality, reliable repairs at fair prices. The staff is polite, knowledgeable, and never tries to talk us into things we don't need or want. We will continue to trust McCullough for all of our repairs.
Laura Lane McKinnon
October 10, 2021This is the best place you could possibly go to take care of your car! My family and I have been going here for over 15 years and we recommend them to everyone. Eric, Bryan, and Graham are the most trustworthy guys and truly care about their customers. We all love them and are so thankful we found them!!
Rachel Walker
October 12, 2021
How To Prolong The Life Of Your Transmission
The first thing you can do is to make sure your transmission always has enough fluid. Transmission fluid cools and lubricates your transmission’s internal parts. When there’s insufficient fluid, the transmission will run hotter and wear out sooner. The transmission fluid also provides the pressure needed to transfer power from the engine to the transmission. If there’s not enough fluid, your transmission won’t shift properly.
McCullough NAPA Auto Care will check your transmission fluid level as part of our complimentary multi-point inspection with any scheduled service. Likewise, if you see any reddish-colored transmission fluid on your Alpharetta driveway, have us inspect it for a leak! A gasket, hose, or seal could be leaking and may need to be repaired.
The next thing you can do to prolong the life of your transmission is to replace your transmission fluid on schedule. As you can imagine, all those gears grinding on each other result in lots of little bits of metal in the fluid. The more there is, the faster the transmission parts will wear out. Transmission fluid also contains detergents and other additives to protect your transmission. These additives are depleted over time, so old fluid doesn’t protect as well as new fluid. Your owner’s manual or service advisor will recommend when you should have a transmission service.
If your transmission isn’t shifting as smoothly as it should, or if you suspect a transmission leak, let us look at it. It may be time to consider scheduled transmission service. Regular maintenance and taking care of small leaks will help your transmission last as long as possible.