McCullough NAPA Auto Care

Transmission Repair & Replacement in Dunwoody, Georgia

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 Dunwoody, Georgia. Contact us to schedule your appointment and to receive your complimentary multi-point inspection with scheduled service.

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Transmission repair What is a transmission flush and why is it necessary

Schedule Transmission Repair or Replacement in Dunwoody, 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 Dunwoody, 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 Dunwoody 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:
30338, 30346, 30356, 30360, 31146

  • Eric was amazingly helpful to work with. Great communication around the whole process. He was great about calling out things that could be done without being pushy about doing them. Would highly recommend!

    thumb Bradley Buckland
    February 27, 2021

    Graham is great. Kept me informed of my repairs and provided an accurate quote. Pleased with the results. Walked away feeling this place is trustworthy and does quality work. Found them through nextdoor app and now I see why they have such great reviews.

    thumb Wess Burgner
    July 27, 2020

    Fantastic service every time I go! The people here are friendly and knowledgeable and actually try to help you pay the lowest cost for your repairs! This is THE place to go for auto repairs 100%!

    thumb Thorin Thompson
    April 26, 2022
  • Eric 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.

    thumb jcwolves .
    June 28, 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!

    thumb Juliana Buttram
    September 19, 2019

    I would normally recommend this business as I have been here a few times. I went there Friday for an oil change. However, I honestly didn't feel safe. They have signs that customers must wear a mask. There was only one employee wearing a mask themselves. All the others didn't have a mask on. I feel this is disrespectful to their customers. I understand it can be uncomfortable but it is essential during these times.

    thumb Ashley Sprague
    January 11, 2021
  • I live in Brookhaven and work in Duluth and pass dozens of auto repair shops on the route. I will forever go out of my way to go to McCullough. This is hands down the best repair shop I’ve ever been to. They are honest, kind, and treat each customer with the utmost respect. I’ll never take my cars anywhere else!

    thumb Joshua Brown
    February 18, 2020

    This 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%.

    thumb Graham Reifert
    July 24, 2019

    Great service! The entire team is so friendly and helpful. They were able to diagnose the issue and stayed with it until the problem was resolved.

    thumb marshall fox
    August 2, 2021
  • Overall, 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.

    thumb Jocelyn Dudley
    July 22, 2021

    Honest and fair price!!! I went in for 60k mile service. They said I only needed oil and cabin air filter changed. That is refreshing honesty! Saved me big bucks! This will be my new shop for my car service. ☺

    thumb Scott O'Kon
    August 22, 2020

    McCullough 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.

    thumb Laura Lane McKinnon
    October 10, 2021
  • The absolute best of the best. I won’t go to anyone else. I’ve been using them 16 years and I’ll use them for 16 more. Eric is a delight!

    thumb Carolyn Roberts
    April 13, 2022

    Honest experts . affordable compared to other places . Only place that was willing to work on my subaru head gasket and other axle work from maybe 5 places I went to .

    thumb Ketan Gunjal
    January 7, 2021

    The technicians are excellent, very experienced, and the customer service is great. Everything was explained in detail so that I would understand.

    thumb Scott Nicholson
    December 1, 2020
  • Could not be happier with the service I received at McCullough NAPA Auto Care! The gentlemen that helped me were very professional and made me feel at ease in a stressful situation. Would definitely recommend!

    thumb Rachel Eichenblatt
    July 1, 2020

    Out of town for work and needed an alternator changed immediately and McCullough's was the only place that said they could and would do it! Reasonably Priced and Great Customer Service! Will definitely be back if ever in the area.

    thumb James Knott
    January 19, 2022

    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.

    thumb kirby caramelo
    January 2, 2022
  • Wow! I am so impressed with the service I received. Having moved here from Nashville I was nervous about finding a mechanic! These guys are BUSY but they treat every customer like their priority. I got my car repaired within two days on a weekend! Prices can’t be beat and I was getting phone calls with detailed status updates. Amazing service. Really compassionate. Please doing business! I thought I was going to have to spend thousands fixing the plate that was dragging under my car but I got it fixed for under $200! Thank you!!!

    thumb Alexa Even
    June 7, 2021

    I have used this company twice and was VERY impressed both times with the honesty, knowledge, and cost-effectiveness of the mechanics that I worked with. They were upfront with me on what I needed to do now vs what could wait, showed me where I could save money, and worked with me to make sure I had my car finished before I needed it that weekend. Again, very very impressed. I wouldn't take my car anywhere else in Atlanta.

    thumb Anon Emus
    September 10, 2020

    Had experienced front tire damage hitting metal debris on I-285 just before Rosewll exit. Immediately exited on Roswell and saw NAPA sign and pulled in. Place was busy! But got attention immediately by Jeff service worker. Got tire off my car no waiting. Wow! Determined rim bent but tire still good. He could have sold me a new tire and i would have not known better. So appreciative. Then met with Eric McCullough and quickly arranged to have rim fixed. I decided on new tires for safety and were worn. Eric got me great deal on tires and had my car fixed SAME day. Eric runs a super customer-focused operation. Kudos! Bruce Fike

    thumb Bruce Fike
    August 1, 2020
  • Came in for emissions and they exceeded my expectations! Saw headlight out, replaced it. Saw no oil sticker, checked it and put a little in it until i can get back in for change. While waiting you could tell these guys really care about their customers and the safety of their vehicles. Definitely will be coming back here!

    thumb Nadia Perrmann
    January 5, 2021

    Got me in the same day and kept me up to date. Fixed what was needed and did not push any costly add ons like other places do. Feel like I can trust these guys.

    thumb Jason Hall
    January 20, 2022

    I have used McCullough for maintenance on my prior vehicle and received great service. Recently I had to repair my front bumper - I received an estimate for repair services that was reasonable. The estimated turn around time was less days than other auto shops. The best part was, the staff (Graham) was accommodating with my schedule and the repair was completed as expected/on time. The work completed was great. I absolutely recommended McCullough for auto care services.

    thumb Jessica Astrid George
    February 23, 2021
  • I 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.

    thumb Erik Davis
    September 10, 2020

    Always extremely professional. Willing to work with customers. Sadly, car repair is expensive but they have worked with me. Graham has been extremely helpful with issues my daughter was having with her car while we were at another mechanic in the area. We asked on Nextdoor for recommendations and McCullough came up numerous times!

    thumb Robyn Vogel
    May 14, 2020

    They diagnosed and repaired my car in time for my trip. Car works great! Eric provides excellent customer service even when he's got a ton on his plate.

    thumb Gavi Shapiro
    May 10, 2022
  • A staff of gentlemen ready to answer every question with a smile and great knowledge. They not only gave me a good estimate but they completed the work a day early! I highly recommend McCullough NAPA Auto Care to you. You will not be disappointed by the care they put into your vehicle.

    thumb Byung Ham
    March 13, 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.

    thumb Walt Anthony
    August 6, 2020

    This 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!!

    thumb 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 Dunwoody 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.