2008 GMC Acadia: transmission slipping

Filed Dec 3, 2019 · Engine, Transmission · 110,000 miles · CA · crash

Transmission failed, transmission slipped out of gear, transmission stuck in first gear, gm approved a 2013 safety recall for this vehicle, the transmission failed in 2017, the transmission was repaired and the entire engine has been replaced twice. The transmission is failing again because it is a product defect that is dangerous. Gm has refused to repair or replace the vehicle and the autonation has refused to repair or replace the vehicle. Gm and autonation have sold a dangerous used car with a fraudulent intent. Gm and autonation have ratified the intentional fraud. The car needs to be replaced immediately because it is still dangerous to drive and the transmission is currently failing again.

Filed Dec 27, 2016 · Transmission · 145,000 miles · IN

Due to deceleration the mechanic replaced the throttle body. After that the vehicle decelerates often driving down the street and seems to slip into neutral. Also will just die at times. Now they are saying a new transmission even though it was replaced 13 months ago. Codes p07756 p0797 stuck on p0963 p0969 p2728 road test by mechanic the vehicle seemed to take off in a higher gear and exhibited low power. During continued driving the transmission slipped out of gear before finally engaging their diagnosis internal transmission failure recommend replace transmission.

Filed Jun 10, 2015 · Transmission · 90,000 miles · CA

As I was driving onto the freeway and trying to merge my vehicle had slipped out of gear while it was in drive. I had no acceleration and I was on an incline. Once my vehicle slowed to 20mph it had re engaged and I was able to merge off of the freeway. This created a safety hazard for my girlfriend and I and her 3 young children because the speed limit on the freeway was 65 MPH with very limited space to merge because other drivers are trying to merge onto an exit ramp. This created a safety hazard not only for our family but for others trying to merge onto the freeway behind us at a very low speed and those trying to exit at the same time. Luckily for us nobody was hurt. The vehicle is now in the shop and we were told that it is the 3-5-r wave plate. After reading on multiple forums about this vehicle and the transmission issues I believe that gmc needs to be held accountable for the malfunctions in this transmission because it is a safety hazard to those on the road.

Filed May 14, 2015 · Transmission · 92,000 miles · LA

Tl* the contact owns a 2008 gmc acadia. While driving approximately 45 MPH, the transmission slipped into a low gear in a jerking motion and the rpms increased rapidly. The engine warning indicator illuminated. The vehicle was maneuvered to the side of the road where the engine was turned off. After restarting the vehicle, the contact was able to resume driving 45 MPH with caution. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 92,000.

Filed Apr 22, 2015 · Engine, Transmission · 53,000 miles · TX

2008 gmc acadia with slightly under 53,000 miles. Was driving across town and the transmission started to shift unexpectedly as if slipping out of gear and the engine going to high revolutions. Check engine light came on. Vehicle stopped for awhile, restarted, began heading towards dealership. Acceleration completely failed and vehicle rolled to a stop with inability to go forward or in reverse. Vehicle towed to gm dealership. Been informed that the clutch broke and spread metal bits across the transmission. Transmission must be replaced even though vehicle only has 53,000 miles on it. Complaint also filed with gm customer care requesting financial assistance with the prohibitive cost of premature repair.

Filed Jan 3, 2015 · Transmission · 52,875 miles · DE

Transmission is slipping really badly to the point it is unsafe for me to drive and this is will less than 53,000 miles on the vehicle. Brought it into a mechanic and the transmission needs to be rebuilt or be completely replaced with an estimated price of $3,000-$4,000 for the repair. I know that there are many, many other people that have experienced this same transmission issue and have filed complaints so when are you going to hold gmc accountable for these defective transmissions?

Filed Nov 26, 2014 · Steering, Transmission · 131,000 miles · MN

We were out in south dakota 200 miles from home. We were driving the acadia and the transmission began to slip. We didn't think anything of it at first. We drove the acadia home and scheduled to have the car looked at. On the monday after we got home, I was driving my kids to school when suddenly the car went completely out of gear and the check engine light came on. I tried putting it into park and then back into gear and had no luck in getting it to go into gear. I shut the engine off and started it again and it did go into gear. I dropped my kids off at school and when in park it went out of gear again. I shut the engine off and on again and got it to go into gear. Drove it directly to the auto shop. They ran the codes. They said it was a 3/5 wave plate issue. Had to have the transmission rebuilt. 2200 for the rebuild. Reading online that this seems to be a common issue with vehicles. Talked to the transmission shop and they said they were rebuilding 8 of these a week from the saturn, buick, chevy and acadias with the 6 speed transmission. They said the wave plate wasn't heat treated at the factory or something like that. It gets heated and deteriorates. Gm would do nothing to help. Hopefully, you guys can.

Filed Sep 8, 2014 · Transmission · 71,174 miles · MN

My wife was driving down the highway with our kids when the transmission suddenly slipped. The engine revved up and then dropped into the next gear. The next time she came to a stop the car wouldn't shift into third or fifth gear. It will not go into reverse either. There are no "service engine" lights on. The service garage said she was lucky it didn't happen in heavy traffic. This seems to be a very common problem with these gm vehicles. Gm will do nothing because it's out of warranty. This is obviously a defect in manufacturing.

Filed Aug 12, 2014 · Transmission · 133,000 miles · NC

Tl* the contact owns a 2008 gmc acadia. While driving approximately 60 MPH, the vehicle lost power and the transmission gears failed. The contact stated that the transmission gears intermittently slipped. The vehicle was towed to an independent mechanic who stated that the waveguide needed to be replaced and the transmission needed to be rebuilt. The vehicle was not repaired. The approximate failure mileage was 133,000.

Filed Aug 11, 2014 · Transmission · 58,658 miles · PA

While driving my 2008 gmc acadia on the highway, the car started shifting hard, jumping, slipping, etc. This caused a very dangerous situation as this could have potentially caused an accident. I was able to get to a parking lot and then my car would not go in reverse, so it had to be pushed into the parking space. The 3-5-reverse wave plate is broken and will need to be replaced. After doing some research on the internet I have found that this is a major problem with 2007-2009 gmc acadias, not to mention several other gm vehicles with the same transmission also have this issue. If there are that many vehicles having the same issue, this proves there is a major defect with this part and gm should be held responsible for this. This problem created an unsafe driving experience for myself and my family while on a busy highway that potentially could have caused a serious accident. Please do something about this and hold gm accountable for their defective part.

Filed Jun 30, 2014 · Transmission · 127,000 miles · CT

The car transmission slipped into neutral, the engine revved to 5000 rpms. I was traveling on interstate 91 in springfield , mass. I had to shift the gear into manual and then back to drive to get the car into gear. The car reduced speed and it was very scary. I had my son as a passenger in the car. The gm dealer told me the "wave plate cracked" on the transmission.

Filed Feb 22, 2014 · Acceleration, Transmission · 85,000 miles · NY

While driving car bucked and shifted irregularly, transmission slipped, no power, no reverse.