Transmission Fault and/or Check Engine Light With Code P0716, P0776, P0717, P0777, P2714, P2715, and/or P02723 on GMC Acadia

Vehicles with a 6speed automatic transmission may develop one or more of the following faults related to a broken 35R clutch wave plate inside the transmission: Illumination of the Check Engine Light with code P0716, P0776, P0717, P0777, P2714, P2715, and/or P02723, loss of reverse gear, slipping or harsh 3rd or 5th gear shift. Removal and dis-assembly of the transmission will be required to replace the broken 35R wave plate. It is also extremely important that all debris from the failed part be cleaned from the transmission while it is disassembled in order to try and prevent future problems.

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Average mileage: 85,152 (11,600–251,750)
Drive Trains affected: AWD, FWD
6 model years affected: 2007, 2008, 2009, 2010, more2011, 2012
154 people reported this problem
86 people shared problem details
Car wasn't shifting properly. Broke down completely to a stand still (with my 3 kids in the car miles away from my home) and needed to be towed. Diagnosis from dealership: 3-5-R WAVE PLATE BROKEN. Transmission was repaired and reassembled. This seems to be a common problem with this vehicle. Class Action law suit??
2008 GMC Acadia65,000
Like other's owner horror stories, car is in the shop with no reverse and 3 5 wave plate busted....of what can be said without openning transmission to see what other damage there. Was told that I am looking at 5K to replace the damn I am PIST, cause this is my first expensive car with all the bels and wistles, except the navigation system stopped working about 3 month after I purchased car - used with 30k miles on it, and the DVD player, which was so my kiddo can be entertained on long trips, stopped working 6 month later. all within months of expired warrantly, ofcourse. Oh and the leaking sunroof.....#@$%#^ I have NEVER seen a car LEAK every time it rains. How can you make such poor quality product??? I first do my research on the problem and then call Buick customer support and let them have it, demanding that THEY cover the cost since they put a faulty part, (which is bound to brake after warranty expires) to begin with. Get transferred to another department that "handles" such issues, and am told that dealership manager will call me back with "financial assistance" offer...Well 2.5k out the door is better then 5K, I admit, but HEY, why should I swallow $2,500 of my hard earned savings???? GMC SHOULD!!! Can't we do anything to make this issue a recall item?
2007 GMC Acadia83,259
The transmission just started slipping in 3rd gear. I'm afraid that after reading all of these complaints that the wave plate might be fixing to go. I'm taking it to the dealership tomorrow. Update: Same ole same ole. Broken wave plate. The service writer stated when asked if this was a common problem ? He very candidly said yes. As these vehs start getting miles on them which in most cases comes after the warranties have just expired,he expects business to really pick up. I will say that my dealership bent over backwards to accomodate me. They gave me a new loaner vehicle and prorated the cost. It's still going to cost me right at $1500.00. It's a big expense right at Xmas time. GM needs to man up. I also filed a complaint with the NHTSA. If you have a 2007 thru 2011 Acadia and it's still under warranty the transmission slips right? Get it fixed on their dime. This is going to get somebody killed. It's not a matter of if these transmissions will's when...
After a trip from Texas to Florida and back we began to experience issues with the transmission and within two days we had just about lost 3rd, 5th, and reverse gears. Mileage was at about 117,400. Knowing the seriousness of transmission issues it was immediately taken into a mechanic. He was able to find the service bulletin that described the issue. Luckily our mechanic is a good guy and tries to fix the problem with the least expense to the customer. He was able to access the transmission at the rear and pull out the guts until he found this broken piece, Unfortunately, there is no "solution" to keep this from happening again as he had to replace with the exact same parts. Thank goodness he was able to make the fix without pulling the transmission and our total cost was $1057 instead of up to $3k or more. Being judicious and taking it in quick also helped as we had caught it early before causing significant damage. In fact, it was only the symptoms that had appeared and no codes had been thrown. I hope this report can help others. We have since purchased a used Toyota Sequoia and are in the process of selling the Acadia as I'm not inclined to play roulette with when this will happen again.
2008 GMC Acadia- AWD38,400
At 38,400 miles by 2008 Acadia let me sitting on a busy roadway for 2 hours. After it was in the shop for 3 days, I was told they would have to rebuild my transmission. Great! Not very happy with this whole mess. I purchased this vehicle for daily use and also because I thought I could travel here and there for family vacations. Now I am afraid this will happen again. Just dissapointed in a car I loved. Rebuilt transmission with 38,000 miles. What next!
2008 GMC Acadia93,000
Transmission slippage and hard shifting. No codes. Had dealer take a look. 35R wave plate. Tranny needed to be rebuilt. 5 months out of warranty. GM needs to step up and extend the warranty on this part.
2007 GMC Acadia62,000
Just informed of my wave plate being broken, to the tune of $2660+tax, and if debris in valve body, brand new transmission. Nothing like "quality" GM product. 62,000 miles is a little low to have this kind of problem.
We first had engine running rough issues and were stranded on our way home from vacation. After $600 worth of repairs, the shop was able to get this running properly. Two weeks later the Transimssion started slipping intermittently. Within 2 days, it was so bad we had it back at the dealer. They believe it is the 3/5 wave plate also. We only have 67,000 miles on this Acadia so I wouldn't have expected it to have such major issues with the drive train. GM wants to ignore the issue even though it is clear that there is a problem and they need to do a recall. It would cost them too much to recall this problem so it is easier to act like there isn't a problem. The mechanics at the dealer even admitted to me that there is a definite problem. I think a class action lawsuit is the next course of action for all of us having this same issue. Does anyone know how to go about starting a class action lawsuit?
2008 GMC Acadia77,000
Driving along at 55mph on highway in cruise control, transmission slipped out of gear into like 3rd gear, limped it home 60 miles (real joy). Ran code reader on it P0700 and P0717. Reset codes, came right back 2 houses down. Read all the threads on-line, limped 8 miles over 2 hours to the dealer turning off car and restarting, erasing codes when that didn't work, wished I lived near tall bridge to throw this POS off of since this is our 3rd major issue after owning this SLT2 for less than 2 years! We were lucky enough to experience the water leaking sunroof and seam issues you can search on and the car has mold we can't get rid of. Wave plate shot and needs to be replaced. My super conservative Dad even is telling me to sell the POS the day I get it back and eat the loss and buy non-GM. Funny coming from a WWII vet who owned nothing but GM's over the past 60 years. GM is not the same as it was. I see a Honda in the near future.
2007 GMC Acadia- FWD38,400
First, loud noise coming from transmission, engine reving, no reverse. Dropped off @ dealership. Broken waveplate, trans needed rebuilt. When complete, a saturn outlook sitting outside with the same exact problem.I hope we're good now?
2009 GMC Acadia96,000
I have had this car for 7 months and I bought at 89,000 miles then when we we're driving it a message popped up saying transmission fluids hot idle engine and it started slipping at 2 gear and 3rd gear and eventually lost reverse. Have to rebuild the transmission
2008 GMC Acadia48,789
I also have been having transmission problems, left me stranded on frontage expressway,had to miss work, and my husband to, I am very disappointed,with my 2008 acadia, what GMC should do is have a recall, there is to many acadia's with same problems,that's very sad to hear all these comments.
First GM car...a black 57 Bel Air Sport Coupe. Last GM 08 Acadia. Bad transmission at 61,000 miles.
Where the code Like P0716 (I have the same except the code )
2008 GMC Acadia- AWD72,000
wave plate shattered
2009 GMC Acadia64,000
The suv will not reverse.
Wave plate broke and got into transmission. Making a grinding noise. Had wave plate and transmission replaced. I am having same problem one year later. Should of bought new transmission instead of a rebuilt because it only has a one year warranty and the new has a two year. GM is aware of this problem and does nothing to fix it! We have spend 7,000 dollars on this vehicle since we bought it! I will never buy a GMC Acadia ever again!
2009 GMC Acadia140,000
Shifts hard into third gear. Struggles to move in reverse
2008 GMC Acadia116,000
It over heated and would not shift correctly. Check engine light vome on and it had three codes one of which is the wave plate. Took it to GMC to check it out and fix it and since it didn't do it when they drove it, they won't fix it. Told me to come back if it happens again. It has did it 3 times with me before taking it to them. I want to get it fixed now instead of waiting to be stranded a fourth time.
2007 GMC Acadia125,000
My truck struggles really bad while backing up, and it shifts very hard going into 2nd or 3rd gear it's horrible.
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