GMC Acadia Transmission Problems

Designed to be a more fuel efficient alternative to the traditional full size SUV, the GMC Acadia was introduced for the 2007 model year, and rode on the new FWD Lambda platform. All-wheel drive and a selection of V6 engines were available, making it a viable option for people that wanted fullsize capability and reasonable fuel economy. To that end, first gen versions of this upscale 3 row crossover were fitted with the 6 speed 6T75 transmission. Let’s look at some of the most common GMC Acadia transmission problems.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

GMC Acadia Transmission Models

GMC Acadia: 6T75E Transmission
GMC Acadia: 9T65 Transmission (2018-Up)

GMC Acadia Diagnostic Trouble Codes | DTC

Trouble CodeDescription
P0711Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712Transmission Fluid Temperature Sensor Circuit Low Input
P0713Transmission Fluid Temperature Sensor Circuit High Input
P0716Input/Turbine Speed Sensor Circuit Range/Performance 
P0717Input/Turbine Speed Sensor Circuit No Signal
P0722Output Speed Sensor Circuit No Signal
P0723Output Speed Sensor Circuit Intermittent
P0741Torque Converter Clutch Circuit
P0742Torque Converter Clutch Circuit Stuck On
P0751Shift Solenoid 'A' Performance or Stuck Off
P0756Shift Solenoid 'B' Performance or Stuck Off
P0776Pressure Control Solenoid 'B' Performance or Stuck Off
P0796Pressure Control Solenoid 'C' Performance or Stuck off
P0816Transmission Fluid Pressure Manual Valve Position Switch Park/Neutral with Drive Ratio
P0816Downshift Switch Circuit
P0826Up and Down Shift Switch Circuit
P0842Transmission Fluid Pressure Sensor/Switch “A” Circuit Low
P0850Park/Neutral Switch Input Circuit
P0851Park/Neutral Switch Input Circuit Low
P0852Park/Neutral Switch Input Circuit High
P0961Pressure Control Solenoid “A” Control Circuit Range/Performance
P0962Pressure Control Solenoid “A” Control Circuit Low
P0963Pressure Control Solenoid “A” Control Circuit High
P0965Pressure Control Solenoid “B” Control Circuit Range/Performance
P0966Pressure Control Solenoid “B” Control Circuit Low
P0967Pressure Control Solenoid “B” Control Circuit High
P0969Pressure Control Solenoid “C” Control Circuit Range/Performance
P0970Pressure Control Solenoid “C” Control Circuit Low
P0971Pressure Control Solenoid “C” Control Circuit High
P0973Shift Solenoid “A” Control Circuit Low
P0974Shift Solenoid “A” Control Circuit High
P0976Shift Solenoid “B” Control Circuit Low
P0977Shift Solenoid “B” Control Circuit High
P2714Pressure Control Solenoid ‘D’ Performance or Stuck Off
P2723Pressure Control Solenoid ‘E’ Stuck Off

GMC Acadia Recalls

2014 GMC Acadia Recall 14V092000 / 14048

Summary – According to the recall, the GMC Acadia transmission shift lever may become detached from the transmission shift cable adjuster. If this happens, the transmission shifter won’t work properly, and the gear indicator won’t be able to display the gear that’s actually selected.
Consequence – Should the shifter become detached while the truck is being driven, the driver won’t be able to select Park, even though the shifter is in the correct position. This can lead to an unintended rollaway, resulting in serious property damage and/or injury.
Remedy – This recall began on April 10, 2014, and GMC dealers were instructed to inspect and replace any affected transmission shift cable adjusters, free of charge. Owners can contact GMC at 1-800-462-8782, referring to recall # 14048. Or they can call the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236

2009 GMC Acadia Recall 09V073000 / 09041

Summary – On some 2009 models, the transmission shift cable adjustment clip may come loose, causing the gear indicator to display the wrong gear.
Consequence – If this problem occurs, the driver could remove the ignition key and exit the vehicle thinking the transmission is in Park, even though it isn’t. This can lead to a rollaway, which can cause injury and/or property damage. A lesser consequence would be the inability to start the vehicle because the transmission is not in Park.
Remedy – This recall began on March 24, 2009, and GMC dealers were instructed to inspect and replace any affected transmission shift cable adjustment clips, free of charge. Owners can contact GMC at 1-800-462-8782, referring to recall # 09041. Or they can call the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236

GMC Acadia Technical Service Bulletins (TSB)

TSB 07-07-30-019 – Check engine light on with poor vehicle performance – 6T70 Transmission | 6T75 Transmission
2008 Buick Enclave – 2007 GMC Acadia – 2007 Pontiac G6 – 2007 Saturn Aura – 2007 Saturn Outlook
Problem – Drivers may experience poor engine/transmission performance, along with the following transmission diagnostic trouble codes: P0716, P0717, P0722, P0723, P0751, P0756, P0776, P0796, P2714, P2723
Solution – These transmission problems may be caused by a failed speed sensor

TSB 13120A – 2013 GMC Acadia 
Problem – The torque converter clutch solenoid can stick due to debris in the transmission. When the vehicle is at the end of a coast-down, as the vehicle is coming to a stop, a stuck solenoid will fail to release the torque converter clutch. This keeps the engine directly connected to the driven wheels. As the vehicle stops, the engine speed will be pulled down below normal idle speed and the engine may stall. The vehicle can be immediately restarted and driven.
Solution – The valve control solenoid should be replaced, and the transmission control module will have to be reprogrammed in order to correct the problem.

TSB 09-07-30-012B – 2008-2009 GMC Acadia  
Problem – Owners may experience a Check Engine/SES light along with no reverse and/or a slip / flare or harsh shifts in 3rd and/or 5th gear. This condition may be caused by a broken 3-5-R clutch wave plate, allowing the apply piston to over- stroke, causing the piston to leak and causing loss of gear application. This normally will not occur before approximately 32,000 km (20,000 mi). Debris generated by the condition can affect the operation of the speed sensors and other clutches.
Solution – A new 35R clutch wave plate will need to be installed.

PIP4627A – 35R clutch wave plate broken – 6T70 Transmission | 6T75 Transmission
2007 – 2009 Saturn Aura – 2007 – 2009 Saturn Outlook – 2008 – 2009 Saturn Vue – 2007 – 2009 GMC Acadia – 2007 – 2009 Pontiac G5 – 2008 – 2009 Pontiac Torrent – 2008 – 2009 Buick Enclave – 2008 – 2009 Chevrolet Equinox – 2008 – 2009 Chevrolet Malibu – 2009 Chevrolet Traverse
Problem – On vehicles equipped with the 3.6L V6 and 6-speed automatic transmission, drivers may experience no reverse, slipping, and/or harsh shifting between 3rd-5th gears. They may also have diagnostic trouble codes P0776 and P0842. This condition is typically caused by a broken 35R clutch wave plate.
Solution – During the repair/rebuild process, the wave plate must be installed properly (with the rounded edge of the internal splines facing the 35R piston), in order to prevent premature failure.

TSB 13120A – Torque converter clutch sticking – 6T70 Transmission | 6T75 Transmission
2013 Buick Enclave – 2013 Cadillac SRX – 2013 Cadillac XTS – 2013 Chevrolet Malibu – 2013 Chevrolet Traverse – 2013 GMC Acadia – 2013 GMC Terrain
Problem – The torque converter clutch solenoid can stick due to debris in the transmission. When the vehicle is at the end of a coast-down, as the vehicle is coming to a stop, a stuck solenoid will fail to release the torque converter clutch. This keeps the engine directly connected to the driven wheels. As the vehicle stops, the engine speed will be pulled down below normal idle speed and the engine may stall. The vehicle can be immediately restarted and driven.
Solution – The valve control solenoid should be replaced, and the transmission control module will have to be reprogrammed in order to correct the problem.

2009 Acadia – TSB PIP4668
Problem: Symptoms associated with this service bulletin include:

  1. Hesitation when accelerating during a right hand turn around 15 mph.
    2. Hesitation/delay/harsh shift around 40 mph during 5-3-2 shift.
    3. Low speed hesitation during a 2-3 shift on light acceleration after launch.
    4. Cruise control busyness around 50 mph and/or poor shift feel.
    5 .Delayed up-shift after a forced throttle downshift after returning to normal throttle.
    6. Nonlinear deceleration feel and/or tachometer swing on 5-4 coast-down shift as a result of entering and exiting Decel Fuel Cut Off (DFCO)

Solution: The transmission control module will have to be reprogrammed in order to correct these problems.

Common Problems with the GMC Acadia Transmission

Related to DTC P0741 – 2008-2010 GMC Acadia  
Problem – If after rebuilding a 6T75E, the TCC remains stuck in the ‘off’ position, the problem may be due to using the incorrect control valve channel upper plate.
Solution – Install a revised control valve channel upper plate with slot (GM part #24226373).

Input/Output Speed Sensor Issues – 6T70E Transmission
Problem – When repairing a failed input speed sensor or output speed sensor, steering system damage could occur.
Solution – To avoid damage to the clock springs, the splined steering knuckle must be prevented from falling out of the steering rack when dropping the subframe to access the valve body.

Lack of Response
Leaking Fluid
Low Fluid
Burning Smell
Grinding or Shaking
Whining, Clunking or Humming
Refuses to Go Into Gear
Torque Converter Issues
Valve Body Issues
Transmission Noisy in Neutral
Gears Slipping
No 3rd or 4th Gear
No 1st or 2nd Gear
No Reverse
Dragging Clutch
Trouble Codes / Check Engine Light

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

How to Diagnose & Fix

  1. Check the OBD Codes
  2. Check the fluid level
  3. Test transmission pressure
  4. Drop the transmission pan
  5. Repair, replace or rebuild

What to Read Next

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What Problem Does Your Acadia Have?

Let us know the year, mileage and problem you’re having as well as any trouble (OBD) codes you’ve found. If you’ve been given a quote or paid for a repair, we’d like to hear about that too!

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Leave a Comment

dan

2008 Acadia 220,000 with no codes for tranny likes to slip in 1st & 2nd at light throttle but give it gas and it will shift fine 3.6vvt 6 speed 2wd

Danny

08 Acadia 157k miles will shift into gears but just revs when you push on the gas like it’s in neutral will not drive and battery will not hold charge over night no check engine light on or anything.

Maureen Gitto

I have a GMC acadia Denali and it’s making a clunking noise when turning and sometimes going straight it only has 44,000 miles on it

McKenzie

I have a 2015 GMC Acadia and I have 80,0000 miles and is still under warranty. The transmission doesn’t seem to be shifting right between 2nd and 3rd gear. The car feels like it is down shifting between 20-25 mph. Sometimes the jerking feeling is so harsh it almost feels like being rear ended. The dealership garage doesn’t seem to know what the issue is. I have taken it to them four times in 2 weeks and they still can’t seem to figure it out. This last time they kept the car for 3 days. They wanted to keep it longer but I need my transportation and they didn’t want to give me a loaner. We finally worked it out that I could get a loaner In a couple days. Still doesn’t make me happy. My warranty will be up soon and they have no clue what’s wrong with the car. I called GMC and they aren’t very helpful At all. I wish I didn’t have two more years to pay on this peace of junk. I will definitely trade it soon and I will stay far away from gmc vehicles. Mainly because I feel like They really don’t care. I called the GMC customer care and they opened a case however they won’t call me back. I’ve left massages, I’ve called them and I get nowhere. It’s horrible customer service. The dealership garage already had me irritated and gmc costumer care seems to be worse. This time I will search the reviews before we make another purchase.

Jennie

Similar to my 2015. Took it in due to the shaking when I would hit 25-30 MPH. They said it was the motor mount and charged me $250. As soon as it was taken off the lot, could still feel the shaking. They took another look and told me I needed a new transmission, $4,800. I love the vehicle and do not want to go with any other make/model but I cannot risk having this happen again. Sad to see this happen with GMC.

Mike Whitacre

Just bought a 2012 Acadia at 102,000 miles. Several problems, timing chain had just been replaced, Power steering fluid leaked out through the cooler, the antenna was bad. and I noticed a surging when the vehicle started uphill. The surging is validated by the tachometer. It stops surging when it shifts to a lower gear. It also seems to be intermittent at lease when the dealer representative took it for a test drive.
I started researching the Acadia, like I should have before I bought this nightmare. I had a relative that had good service from an Acadia that they had only a short time. I now know I would not have bought his vehicle. I feel like an idiot. but I’ll just have to figure out what to do from here. I was told by a GM service center that the Torque converter is bad.now the fix is $2000. I can only hope that is the fix so I can get this vehicle traded off. Any suggestions?

UMEH GABRIEL CHIMEZIE

I bought used gmc acadia, I send it to my country only to go for mid year leave , as I was travelling for a 30 minute drive I found out that the car movement is not normal, I managed to go and come back, after packing the car I come later to repack, as I put to reverse gear the car could not move, please what is the cause?

Joe Shelton

I purchased a 2009 Acadia SLT on 1-5-18. It came with a new transmission with a year warranty. On 1-6/18 I was turning left and had the tranny slip. Called the dealer and has told to contact the place that installed the new transmission. They have replaced the transmission 4 times in 108 days. They have had it 35 days. I just went on a road trip of 600 miles and you guessed it the transmission wants to shift in and out when it is going up a grade. When will my nightmare end? I know when I get rid of this car! Can’t afford to keep it and can’t afford to replace it. GM should have to make these right!

clarence collins

if the engine nat warm the check engine light come on after it get warm aou can hand shift it

Elizabeth

I bought a 2009 GMC Acadia on 7/11/13 w/79,000 miles on it, from a reputable dealership, supposedly. I have had it in the shop 5 times since I bought it. Cruise control went out, Catalytic converter replaced, timing chains replaced, battery replaced, motor mount replaced, and now the transmission needs replacing. I was told it had a 5yr/100,000 mile Powertrain warranty on it, but then on 10/16/13, I was told that expired on 7/29/13, because the car was sold in July 2008. Prior to buying an Acadia, I read where there were many problems with the 2007 & 2008 transmissions and that new transmissions were installed in Acadias in 2010. How can I prove if this is true? And how much should a transmission replacement cost?

Cari

I bought a 2009 Acadia in March 2017 at 108k miles and have had almost the same exact list of items replaced… cruise control switch, battery, alternator, almost every coil pack, timing chains (within 24 hours of purchasing), one of the internal computer modules, and it presently needs a new catalytic converter and has transmission slipping, which means I need to figure out how to get rid of this thing, but I don’t want to sell it privately, and don’t want to go back to the dealer I bought it from because they just yanked me around on the transmission issues until my warranty expired.