The 2014 GMC Acadia is a midsize SUV that offers spacious seating, a smooth ride, and a powerful engine.
However, some owners of this model have reported experiencing transmission problems that can affect the performance and safety of their vehicles.
In this article, we will explore the most common 2014 GMC Acadia transmission problems, their causes, symptoms, and solutions.
We will also provide you with some tips on how to prevent or minimize these problems and how to deal with them if they occur.
By the end of this article, you will have a complete guide on what to do if you encounter any 2014 GMC Acadia transmission problems.
What are the symptoms of a bad transmission in a 2014 GMC Acadia?
Some of the common symptoms are:
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Gear slippage or slow shifting
This means that the transmission does not shift smoothly or quickly between gears, or that it slips out of gear unexpectedly. This can cause a loss of power, acceleration, and fuel efficiency. It can also damage the transmission components and lead to more serious problems. Gear slippage or slow shifting can be caused by low fluid levels, fluid leaks, solenoid problems, or internal wear and tear.
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Grinding or brushing noises
This means that you hear strange sounds coming from the transmission while driving, especially when accelerating or decelerating. These noises can indicate that there is friction or metal-to-metal contact between the transmission parts, which can result in overheating, wear, and damage. Grinding or brushing noises can be caused by worn or damaged needle bearings in the torque converter, or by other mechanical issues.
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Shudder or vibration
This means that the vehicle shakes or trembles convulsively when driving, especially at certain speeds or under certain loads. This can affect the comfort and stability of the vehicle, and can also indicate that the transmission is not functioning properly. Shudder or vibration can be caused by torque converter problems, such as shudder, which occurs when the clutch inside the torque converter does not lock or unlock smoothly, or by other issues such as misalignment, imbalance, or faulty mounts.
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Check the engine light or transmission warning light
This means that the vehicle’s computer has detected a problem with the transmission system, and has activated a warning light on the dashboard. This can alert you to a potential issue that needs to be diagnosed and fixed as soon as possible before it worsens or causes further damage. The check engine light or transmission warning light can be triggered by various transmission problems, such as overheating, solenoid issues, sensor failures, or internal malfunctions.
What Are The 2014 Gmc Acadia Transmission Problems?
Some of the common causes of transmission problems are:
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Low fluid levels or leaks
The transmission fluid is essential for lubricating, cooling, and pressurizing the transmission components. If the fluid level is too low, or if there is a leak in the transmission or driveshaft seals, the transmission may not function properly and may overheat, slip, or damage the internal parts.
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Worn clutches
The clutches are the parts that engage and disengage the gears in the transmission. If the clutches are worn or damaged, they may not be able to hold the gears securely and may cause the transmission to slip, shudder, or grind.
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Faulty solenoids
The solenoids are the electronic valves that control the flow of fluid in the transmission. They are activated by the vehicle’s computer based on the speed, load, and throttle position. If the solenoids are faulty, they may not open or close properly and may cause the transmission to shift erratically, harshly, or not at all.
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Torque converter problems
The torque converter is the part that connects the engine and the transmission. It allows the engine to run at different speeds than the transmission and provides a smooth and efficient transfer of power. If the torque converter is defective, it may cause the transmission to shudder, vibrate, overheat, or slip.
Some of the common torque converter problems are shudder, which occurs when the clutch inside the converter does not lock or unlock smoothly, and needle bearing failure, which occurs when the bearings that support the converter wear out and cause friction or noise.
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Sensor failures
The transmission system relies on various sensors to monitor the speed, temperature, pressure, and position of the transmission and the engine. If any of these sensors fail, they may send incorrect or no signals to the computer, which may result in improper or no shifting, check engine light, or transmission warning light.
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Internal malfunctions
The transmission system consists of many complex and delicate parts, such as gears, valves, bands, pistons, springs, and chains. If any of these parts break, wear out, or become misaligned, they may cause the transmission to malfunction or fail.
How To Diagnose 2014 Gmc Acadia Transmission Problems?
Here are some steps that you can follow to diagnose your transmission problems:
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Check the transmission fluid level and condition
The transmission fluid is essential for the proper functioning of the transmission. It lubricates, cools, and pressurizes the transmission components. To check the fluid level, you need to locate the transmission dipstick under the hood, pull it out, wipe it clean, and reinsert it. Then, pull it out again and read the level on the dipstick. It should be between the full and add marks. If the fluid level is low, you need to add more fluid of the correct type and viscosity.
To check the fluid condition, you need to examine the color, smell, and texture of the fluid on the dipstick. It should be red, clear, and smooth. If the fluid is brown, black, cloudy, or has a burnt smell or metal particles, it indicates that the fluid is old, contaminated, or overheated. You need to change the fluid or flush the transmission as soon as possible.
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Scan the vehicle’s computer for trouble codes
The vehicle’s computer monitors the transmission system and detects any problems or malfunctions. It stores the trouble codes in its memory and activates the check engine light or the transmission warning light on the dashboard.
To read the trouble codes, you need to connect a scan tool or a code reader to the diagnostic port under the dashboard. The scan tool or the code reader will display the trouble codes and their meanings on its screen. You can use the trouble codes to identify the specific problem or component that is causing the transmission issue.
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Perform a road test
A road test is a simple way to evaluate the transmission performance and behavior under different driving conditions. To perform a road test, you need to drive your vehicle on various roads and speeds and observe how the transmission shifts, responds and sounds. You need to pay attention to any signs of transmission problems, such as delayed, harsh, erratic, or noisy shifting, gear slippage, shudder, vibration, or loss of power.
You also need to check the transmission temperature gauge on the dashboard, if your vehicle has one, and make sure that the transmission does not overheat. A road test can help you to confirm or rule out some of the transmission problems that you may have detected by checking the fluid or scanning the computer.
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Inspect the transmission components
If the previous steps do not reveal the cause of the transmission problem, or if you want to verify the diagnosis, you need to inspect the transmission components visually and mechanically. This may require you to raise the vehicle on a lift or a jack and remove some parts of the transmission or the driveshaft. You need to look for any signs of damage, wear, or leakage on the transmission components, such as the seals, gaskets, clutches, solenoids, torque converter, sensors, valves, bands, pistons, springs, and chains.
You may also need to measure the pressure, resistance, or voltage of some of the components using a pressure gauge, a multimeter, or a test light. You may also need to perform some adjustments or calibrations on some of the components using a scan tool or a special tool. Inspecting the transmission components can help you pinpoint the exact problem or component that is causing the transmission issue.
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How Common Are 2014 GMC Acadia Transmission Problems?
Transmission problems are quite common for the 2014 GMC Acadia, especially during the first generation of this model from 2014 to 2018. The 6T70 and 6T75 transmissions used in these models were known for their shifting difficulties, such as gear slippage, slow shifting, grinding noises, shudder, vibration, and warning lights.
Some of the possible causes of these problems are low fluid levels, leaks, worn clutches, faulty solenoids, torque converter problems, sensor failures, and internal malfunctions.
However, the reported transmission issues are few, with just 15 complaints on file with the National Highway Traffic Safety Administration, and complaints on owner forums being scarce.
Therefore, the frequency and severity of transmission problems may vary depending on the vehicle’s condition, maintenance, and usage.
How To Fix 2014 GMC Acadia Transmission Problems?
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Low fluid levels or leaks
If the transmission fluid level is low or there is a leak in the transmission system, you need to add more fluid of the correct type and viscosity or replace the faulty seals, gaskets, or hoses that are causing the leak. You can check the fluid level and condition by using the transmission dipstick under the hood. You can also use a flashlight and a mirror to inspect the transmission and the driveshaft for any signs of leakage.
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Worn clutches
If the clutches are worn or damaged, they may need to be replaced or adjusted. This may require you to remove the transmission pan, the valve body, and the clutch packs, and install new or rebuilt clutches. You may also need to replace the transmission filter and the fluid. This is a complex and labor-intensive process that may require special tools and skills.
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Faulty solenoids
If the solenoids are faulty, they may need to be tested and replaced. You can test the solenoids by using a multimeter or a test light to measure the resistance or voltage of the solenoids. You can also use a scan tool to activate the solenoids and observe their operation. If the solenoids are defective, you need to remove the transmission pan and the valve body, and replace the faulty solenoids. You may also need to replace the transmission filter and the fluid.
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Torque converter problems
If the torque converter is defective, it may need to be replaced or repaired. You can diagnose the torque converter problems by using a scan tool to monitor the torque converter clutch operation, or by performing a stall test or a shudder test. If the torque converter is faulty, you need to disconnect the transmission from the engine, and remove the torque converter from the transmission. You may need to replace the entire torque converter, or rebuild it by replacing the needle bearings, the clutch, or the seals.
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Sensor failures
If any of the sensors that monitor the transmission system fail, they may need to be replaced or repaired. You can diagnose the sensor failures by using a scan tool to read the trouble codes and the data from the sensors, or by using a multimeter or a test light to measure the resistance or voltage of the sensors. If the sensors are faulty, you need to locate and replace the defective sensors. You may also need to clear the trouble codes and reset the computer.
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Internal malfunctions
If any of the internal parts of the transmission break, wear out, or become misaligned, they may need to be replaced or repaired. This may require you to disassemble the transmission and inspect the components, such as the gears, valves, bands, pistons, springs, and chains. You may need to replace or rebuild the damaged or worn parts or adjust or calibrate the components. This is a complicated and time-consuming process that may require special tools and skills.
How To Prevent Or Minimize 2014 Gmc Acadia Transmission Problems?
To prevent or minimize 2014 GMC Acadia transmission problems, you need to follow some preventive maintenance tips and practices. Here are some of them:
Check the transmission fluid level and condition regularly
The transmission fluid is essential for the proper functioning of the transmission. It lubricates, cools, and pressurizes the transmission components. You should check the fluid level and condition at least once a month, or more often if you notice any signs of transmission problems.
To check the fluid level, you need to locate the transmission dipstick under the hood, pull it out, wipe it clean, and reinsert it. Then, pull it out again and read the level on the dipstick. It should be between the full and add marks.
If the fluid level is low, you need to add more fluid of the correct type and viscosity. To check the fluid condition, you need to examine the color, smell, and texture of the fluid on the dipstick. It should be red, clear, and smooth. If the fluid is brown, black, cloudy, or has a burnt smell or metal particles, it indicates that the fluid is old, contaminated, or overheated. You need to change the fluid or flush the transmission as soon as possible.
Change the transmission fluid and filter periodically
The transmission fluid and filter are vital for keeping the transmission clean and free of debris and contaminants. Over time, the fluid and filter may become dirty, clogged, or worn out, and may affect the transmission performance and durability.
You should change the fluid and filter according to the manufacturer’s recommendations, or more frequently if you drive in severe conditions, such as towing, heavy loads, or frequent stop-and-go traffic. Changing the fluid and filter can help to prevent or minimize transmission problems, such as overheating, slippage, shudder, or noise.
Avoid driving habits that can damage the transmission
The way you drive your vehicle can have a significant impact on the transmission’s health and lifespan. You should avoid driving habits that can cause excessive stress or wear on the transmission, such as:
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Do not shift gears while the vehicle is moving
This can damage the transmission components and cause the transmission to malfunction or fail. You should always come to a complete stop before shifting from drive to reverse, or vice versa.
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Do not tow or carry heavy loads beyond the vehicle’s capacity
This can overheat the transmission and cause the fluid to break down or the components to wear out. You should always follow the manufacturer’s specifications for the maximum towing and payload capacity of your vehicle, and use the appropriate gear and mode for towing or hauling.
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Do not accelerate or decelerate abruptly
This can cause the transmission to shift harshly or erratically and may damage the clutches, solenoids, or torque converter. You should always accelerate and decelerate smoothly and gradually, and avoid sudden changes in speed or direction.
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Have your transmission inspected and serviced regularly
The transmission is a complex and delicate system that requires regular inspection and service to ensure its optimal performance and reliability. You should have your transmission checked and serviced by a professional mechanic at least once a year, or more often if you notice any signs of transmission problems.
The mechanic can perform some tests and inspections on the transmission system, such as scanning the computer for trouble codes, performing a road test, measuring the fluid pressure, testing the solenoids and sensors, and inspecting the transmission components.
The mechanic can also perform some repairs or adjustments on the transmission system, such as replacing or rebuilding the clutches, solenoids, torque converter, or sensors, or adjusting or calibrating the components.
Having your transmission inspected and serviced regularly can help to prevent or minimize transmission problems, or to diagnose and fix them before they worsen or cause further damage.
What Are The Recalls And Warranties For 2014 Gmc Acadia Transmission Problems?
There are some recalls and warranties for the 2014 GMC Acadia transmission problems. Here is a summary:
- Two recalls involve the transmission shift cable adjuster, which may disengage from the transmission shift lever and cause the vehicle to roll away. The affected years are 2014 and 2009. The dealer must inspect and replace the shift cable adjuster for free.
- There are also some technical service bulletins (TSBs) that address some transmission issues, such as torque converter shudder, sensor failures, and fluid leaks. The TSBs provide diagnostic and repair instructions for the authorized dealers, but they are not recalls and may not be covered by the warranty.
- The warranty for the 2014 GMC Acadia covers the transmission for 5 years or 100,000 miles, whichever comes first. The warranty covers the cost of parts and labor for any defects in materials or workmanship, but not for normal wear and tear, maintenance, or damage caused by misuse, negligence, or accidents.
How To Find The Best Service And Repair For 2014 Gmc Acadia Transmission Problems?
To find the best service and repair for 2014 GMC Acadia transmission problems, you need to do some research and comparison. Here are some steps that you can follow to find the best service and repair for your transmission problems:
Check the reviews and ratings of the service and repair shops
You can use online platforms, such as Google, Yelp, or Angie’s List, to find and compare the service and repair shops near you. You can read the reviews and ratings from other customers who have used their services, and see their feedback on the quality, price, and customer service of the shops. You can also ask for recommendations from your friends, family, or colleagues who have similar vehicles or transmission problems.
Verify the credentials and certifications of the service and repair technicians
You can check the credentials and certifications of the service and repair technicians who will work on your transmission. You can look for the ASE (Automotive Service Excellence) certification, which is a nationally recognized standard for automotive technicians. You can also look for the ATRA (Automatic Transmission Rebuilders Association) certification, which is a specific certification for transmission specialists. You can also ask for their experience, training, and warranty policies.
Get estimates and compare prices and services
You can get estimates from different service and repair shops, and compare their prices and services. You can ask for a written estimate that includes the diagnosis, parts, labor, and taxes. You can also ask for a breakdown of the services and repairs that they will perform and the time and cost involved. You can also ask for any discounts, coupons, or special offers that they may have.
Choose the service and repair shop that meets your needs and expectations
You can choose the service and repair shop that offers the best value, quality, and customer service for your transmission problems. You can consider the factors such as the reputation, credentials, certifications, estimates, prices, services, and warranties of the shops. You can also trust your intuition and choose the shop that you feel comfortable and confident with.
How much does it cost to replace a transmission in a 2014 GMC Acadia?
A 2014 GMC Acadia transmission replacement costs between $2,600 and $3,200, depending on your mechanic’s hourly rates. The cost of the new transmission is probably going to be somewhere between $1,800 and $2,400, while the rest of the cost accounts for labor. Replacing a transmission is a complex and labor-intensive process that may require special tools and skills.
What Kind Of Transmission Does A 2014 Gmc Acadia Have?
The 2014 GMC Acadia has two types of transmissions, depending on the model year and the engine size. The first type is the 6-speed 6T75 automatic transmission, which is used for the 3.6L V6 engine.
The second type is the 6-speed 6T70 automatic transmission, which is used for the 2.5L I4 engine12. Both transmissions are electronically controlled and have a manual shift mode3.
The 6T75 and 6T70 transmissions are part of the Hydra-Matic family of transmissions, which are designed and manufactured by General Motors.
GMC Acadia Transmission Reset
Here are some possible methods that you can try:
- Disconnect the battery cables: This method may work for some older models, such as the 2009 Acadia. You need to disconnect the positive and negative battery cables and touch them together for about 10 seconds. This may reset the transmission control module (TCM) and clear any trouble codes. You may need to drive the vehicle for a while to relearn the shift points.
- Perform a manual reset mode: This method may work for some newer models, such as the 2017 Acadia. You need to turn the ignition on without starting the engine and press the accelerator pedal for 10 seconds. Then, turn the ignition off and wait for 2 minutes. This may reset the TCM and adaptive learning.
- Use a scan tool or a code reader: This method may work for most models and years, but it requires a special device that can communicate with the vehicle’s computer. You need to connect the scan tool or the code reader to the diagnostic port under the dashboard and follow the instructions on the device’s screen. You may be able to read and clear the trouble codes, reset the TCM, or perform a service fast learn.
2014 GMC Acadia Jerking When Accelerating
There are several possible causes for your 2014 GMC Acadia jerking when accelerating, such as:
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Misfiring engine
This means that one or more of the cylinders are not firing properly, which can affect the power and smoothness of the engine. This can be caused by faulty spark plugs, coil packs, plug wires, or fuel injectors.
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Low fluid levels or leaks
This means that the transmission fluid is too low or there is a leak in the transmission system. This can cause the transmission to overheat, slip, or damage the internal parts.
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Worn clutches
This means that the clutches that engage and disengage the gears are worn or damaged. This can cause the transmission to slip, shudder, or grind.
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Faulty solenoids
This means that the solenoids that control the flow of fluid in the transmission are faulty. This can cause the transmission to shift erratically, harshly, or not at all.
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Torque converter problems
This means that the torque converter that connects the engine and the transmission is defective. This can cause the transmission to shudder, vibrate, overheat, or slip. Some of the common torque converter problems are shudder, which occurs when the clutch inside the converter does not lock or unlock smoothly, and needle bearing failure, which occurs when the bearings that support the converter wear out and cause friction or noise.
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Sensor failures
This means that the sensors that monitor the speed, temperature, pressure, and position of the transmission and the engine fail. This can cause the transmission to shift improperly or not at all, or activate the check engine or transmission warning light.
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Internal malfunctions
This means that the internal parts of the transmission, such as the gears, valves, bands, pistons, springs, and chains, break, wear out, or become misaligned. This can cause the transmission to malfunction or fail.
Conclusion
The 2014 GMC Acadia is a midsize SUV that offers many features and benefits, but it also has some transmission problems that can affect its performance and safety.
Some of the common transmission problems are low fluid levels, leaks, worn clutches, faulty solenoids, torque converter problems, sensor failures, and internal malfunctions.
These problems can cause symptoms such as gear slippage, slow shifting, grinding noises, shudder, vibration, and warning lights.
To diagnose and fix these problems, you need to check the fluid level and condition, scan the computer for trouble codes, perform a road test, and inspect the transmission components.
You may also need to consult a professional mechanic for assistance.
To prevent or minimize these problems, you need to follow some preventive maintenance tips and practices, such as checking the fluid and filter regularly, changing them periodically, avoiding driving habits that can damage the transmission, and having your transmission inspected and serviced regularly.
You should also check if your vehicle is eligible for any recalls or warranties for the transmission problems.
By following this complete guide, you can ensure that your 2014 GMC Acadia transmission is in good shape and condition.
