3 Common GMC Acadia Transmission Problems

The GMC Acadia is a popular SUV that offers a comfortable ride and versatile performance. However, you may encounter some transmission problems with certain models, affecting the overall driving experience.

These issues might range from shuddering to overheating, and it’s essential to be aware of the potential problems before they turn into significant concerns. Knowledge of common transmission troubles with the GMC Acadia can help you in preventing or addressing them effectively, ensuring a smoother ride for you and your family.

Common Transmission Issues and Symptoms

Overheating and Solenoid Issues

One common issue with the GMC Acadia transmissions, particularly the 6-speed 6T75, is overheating. This can happen when the moving parts inside the transmission generate more heat than the fluid can dissipate. To prevent this issue, make sure your transmission fluid is clean and at the proper level. Besides overheating, solenoid problems can also affect your Acadia’s transmission performance. Faulty solenoids may lead to delayed or erratic gear shifts.

Leaks and Slipping

Another prevalent problem with GMC Acadia transmissions is fluid leaks. These can cause slipping or slow shifting. If you notice that your vehicle’s fluid levels are low, address the issue promptly by locating and repairing any leaks. Additionally, check the transmission gasket for damage, as it can also cause fluid leakage. In case the fluid is contaminated due to aging, consider changing it or performing a complete transmission flush to maintain proper function.

Torque Converter and Clutch Problems

The torque converter in your GMC Acadia might experience issues such as shudder, which occurs when the vehicle shakes or trembles convulsively. This can happen while driving uphill with the overdrive gear engaged or when shifting to overdrive. To avoid torque converter problems, make sure the transmission fluid is in good condition and at the right level, as it plays a vital role in the converter’s operation.

Lastly, clutch problems may also affect the transmission’s function, causing it to fail in shifting gears properly. Regular maintenance of the clutch and other transmission components will help ensure smooth and reliable performance from your Acadia.

Year-Specific Transmission Problems

2014 to 2018 Models

During the first-generation of GMC Acadia, specifically from 2014 to 2018, transmission problems were quite common. The 6T70 and 6T75 transmissions were used in these models and were known for their shifting difficulties. Drivers reported various issues such as transmission failures, which often led to transmission rebuilds under warranty. Issues with the first-generation Acadia transmission can affect its towing capacity and overall power output.

Improper gear changes, rough shifts, and weak acceleration were some of the main concerns reported by owners of 2014 to 2018 models, especially the 2016 GMC Acadia. Problems like these compromised the overall driving experience of these crossover SUVs.

2019 to 2022 Models

The second-generation GMC Acadia, which began in 2019, saw the introduction of new 9-speed 9T50 and 9T65 transmissions from General Motors. These 9-speed transmissions aimed to improve the performance and fuel economy of the mid-size SUV. Although the 2019 to 2022 models were supposed to resolve the transmission issues found in the previous generation, it is still essential to be aware of any potential problems.

For the 2022 GMC Acadia, some common transmission problems may still surface due to its complex design and the occasional need for updates. In this regard, it is crucial to monitor your vehicle for any aforementioned concerns and to address them immediately with a professional if you experience improper gear changes, rough shifts, or unusual noises during operation.

Overall, when considering the GMC Acadia, it’s important to be aware of the year-specific transmission problems to make an informed decision. While the second-generation models offer improvements in terms of performance and reliability, it’s still crucial to keep an eye on any potential transmission challenges and address them swiftly.

Recalls and Customer Complaints

When it comes to transmission problems, the GMC Acadia has its fair share of recalls and customer complaints. CarComplaints.com is a popular online automotive complaint resource that provides graphs and data on automotive defect patterns and complaint data. They allow users to browse through various vehicle components and specific problems, giving you insights into the most common issues people experience with their cars.

One notable recall that affected the 2023 GMC Acadia was due to the incorrect transmission sun gear. This kind of issue can seriously impact the performance of your vehicle. To stay updated on such recalls, you can visit the National Highway Traffic Safety Administration (NHTSA) website. From there, you can report a problem with your vehicle, tires, car seats, or other equipment and even search for recalls by your vehicle’s VIN.

On social media platforms like Twitter and Google+, people often share their experiences with vehicle problems, including those related to the GMC Acadia’s transmission. You can use these platforms to gather more information on the issue by following relevant hashtags or joining discussion groups.

As an Acadia owner or potential buyer, you can also play an active role in addressing these transmission problems. Adding a complaint on CarComplaints.com or reporting issues to the NHTSA helps contribute to the growing database of complaint data. This data can then be used by other car owners to make informed decisions and also assist automakers in identifying and resolving pattern failures.

It’s essential to stay informed about common transmission problems and recalls, taking advantage of available resources to ensure your safety and the longevity of your vehicle. Regularly checking websites like CarComplaints.com or NHTSA, participating in social media discussions, and reporting any issues you encounter can help make driving a more pleasant experience for you and others on the road.

Maintenance and Repairs

Taking care of your GMC Acadia’s transmission is crucial for its longevity and smooth operation. Regular maintenance, such as changing the transmission fluid, can help prevent transmission shudder and other common issues.

To begin, check the transmission fluid levels and color periodically. Fresh fluid is typically red, while dirty or burnt fluid turns brown. If you notice the color change, it’s time for a fluid replacement. Consult your owner’s manual for the recommended interval for changing the transmission fluid in your Acadia.

Visiting a trusted car mechanic for regular inspection of the transmission and its components can help catch potential problems early. They can check the transmission control module (TCM) for errors, which may cause irregular shifting or other issues. Addressing TCM issues promptly can ultimately save you time and money in the long run.

In some cases, a transmission rebuild might be necessary if significant issues arise, such as those reported in the 2016 GMC Acadia. However, it’s essential to work with a reputable mechanic to ensure that a rebuild or replacement is truly warranted.

By following the recommended maintenance schedule and addressing any concerns as they arise, you can keep your Acadia running smoothly and prevent costly transmission repairs down the line.

Costs of Transmission Repairs

When it comes to the cost of transmission repairs for the GMC Acadia, there are a few different factors to consider. The total cost can vary based on the generation of Acadia, the specific transmission type, and whether the transmission is replaced or rebuilt.

For the first-generation GMC Acadia, the 6T75 and 6T70 transmissions are common. The cost of these transmissions can be around $2,955 each. In the second generation, you might encounter the 9T45, 9T50, and 9T65 transmissions. The 9T65 transmission costs approximately $3,300, while the 9T50 transmission costs around $3,250.

When it comes to deciding between a new transmission and a transmission rebuild, the decision will primarily depend on your Acadia’s year, mileage, and overall condition. In general, a typical transmission replacement for a GMC Acadia can cost between $4,000-$5,000+ while a rebuild tends to be somewhat cheaper. However, it’s important to weigh the benefits and drawbacks of each option. A new transmission might provide better long-term reliability, but it is more expensive. On the other hand, a rebuild can be more cost-effective, but it may not address all potential issues.

When it comes to repair costs, they can vary greatly. Some GMC Acadia owners have reported repair costs ranging from $1000 – $2499, while others have experienced higher costs in the $2500+ range. To minimize these expenses, it’s essential to maintain your transmission properly, adhere to regular checks, and address any signs of trouble as soon as they appear. Proper maintenance can help you avoid costly repairs, and ensure that your Acadia’s transmission remains reliable for as long as possible.


In conclusion, it’s essential for you as a GMC Acadia owner to be aware of the potential transmission problems that you may encounter. Maintaining your vehicle’s transmission system can help improve your Acadia’s reliability and extend its overall lifespan. Stay alert for any signs of transmission failure, such as strange noises, slipping, or hesitating during shifting.

Addressing these issues in a timely manner goes a long way to ensure a smooth and enjoyable driving experience. Remember, taking proactive steps in caring for your Acadia’s transmission will save you from potential expensive repairs or replacements down the road. Drive safely and enjoy your GMC Acadia!

  • Eric Williams

    I'm the founder of Daily Car Tips. I wrote articles in the automotive industry for more than 10 years, published in USA and Europe. I love sharing my knowledge and insights with fellow enthusiasts. Join me on this journey as we explore the exciting world of cars together!

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