The vehicle described in this complaint has a leak on the drivers side sun roof. Took vehicle to dealer to have problem resolved. Tech indicated that water was draining slowly. Tech indicated that drains were blown out and water was draining out in a faster rate. As of today's rain storm, sun roof continues to leak. Leak occurs when vehicle is sitting still and during movement.

- Chicago, IL, USA

Transmission started getting sluggish around 88, 000 miles. Vehicle wouldn't crank due to electrical stabilizer, now my sunroof is leaking. Dealership is going to charge me $275 dollar to unblock the sunroof drains what a rip off when this is the three time I have had the drains cleaned and the sunroof still leak. This has to be a GMC problem that they refuse to acknowledge. The transmission is still under the GMC warranty so thank god I don't have to pay out of pocket for that. The electrical modules seem to be okay for now but at any giving time the vehicle may stop working. GMC should own up to these problems and look out for their customers.

- Salisbury, NC, USA

I made a previous complaint filed here under NHTSA id number: 10765088. The local garber GMC dealership sealed the sunroof and cleaned the clogged hoses that drain water from the roof. They also replaced the passenger side airbag for a total of $600. They gave a guarantee that there would be no more leaks. On November 18 the car began leaking from the front passenger side airbag area and water poured from the roof onto the glove compartment when I made a full stop. Currently awaiting a return call from the service manager of GMC dealer. I have video of the problem. I was driving in the rain from one college campus location to another, in other words many stop and go and side streets at 30 mph or less. The car made squealing noises as well which happened last time too (September of this year).

- Port Saint Lucie, FL, USA

Power liftgate does not work. Liftgate will not open on its own, and when I open it, it slams down. This could cause injury to me or my children.

- Gardendale, AL, USA

Water enters the interior of the vehicle as the sunroof drains continue to clog up and water falls on driver and driver side electrical fuses.

- Atlanta, GA, USA

During acceleration the vehicle vibrates when going between 35 and 45 mph. Was not able to reproduce issue at dealership last fall, but is now getting much worse. Happens almost everytime the vehicle accelerates.

- Elizabethtown, KY, USA

The liftgate on my 2008 GMC Acadia does not stay up and keeps coming down on our heads and body.. I saw that there were recalls on this item but not on my VIN?? this is a major safety issue.

- Shirley, NY, USA

This vehicle leaks through the sunroof and it goes all around the interior of the vehicle. Since it leaks inside I'm afraid it is going to reach the electrical components of the vehicle. It also leaks around where the battery is at an it can cause a shortage. Water also falls in through all the way to the carpet where the driver and passenger side, I don't know if the rear rows are affected. This makes the car have a ugly smell and sometimes I can't even breathe in my own car-- it smells extremely humid and horrible. The water that leaks in also leaves nasty marks around the interior roof of the car that really makes me feel depressed as soon as I open my door and see it. This problem really concerns me and I've also see multiple reviews of people with the same vehicle that have this problem. I can't drive my car in the rain or take it through the car wash without water leaking inside, and I hope one day it doesn't cause a fire in the electrical components.

- Chicago, IL, USA

Just after buying my 08 Acadia everything on it went wrong. But now 2 half years later and only 13000 miles I cant take anymore. The sunroof has leaked since we bought it. I hardly ever drive it due to the leak and the noise the steering makes. Returned to dealer. They said drain tubes clogged. Still leaked. Carried to body shop they said same thing. Fixed again. Still leaks. Called GM dealer today said they cant fix it.they said to call body shop I just got it back from. They said that is who they would carry it too. I can only assume that I have mold issues. I can only assume my airbags wont work. I also figure with all the wiring wet anything could happen. I promise when something happens to my family due to this car GM will pay. I will make it my life work to make them pay.

- Prospect, TN, USA

HVAC blower motor submerged in water. Causing motor to fail. No defrost. Effecting field of vision. No sunroof on this model Acadia. Seems to be from condensation. Also concerned about electrical failure.

- Denham Springs, LA, USA

Transmission needs to be completely replaced. Most of my mileage is in-town driving and have under 64,000 miles. I have heard of many GMC Acadia's 2007-2009 having transmission problems.

- North Mankato, MN, USA

In light of the all the safety recalls by GM for ignition switch failures, I believe that my wife's crash in our 2008 GMC Acadia was the direct cause of the ignition switch failing. Driving North bound on AZ route 89 in the area of prescott, AZ called the granite dells, the car proceeded straight where the road turns slightly to the right. The cat proceeded into and partially up a granite stone out cropping on the opposite side of the road. The car then went air borne landing up side down on its roof in the middle of route 89. I believe that this accident happened due to ignition switch failure which in turn shut off the engine, power steering, and the entire air bag system which in this accident fail to deploy. My wife was air lifted to northern Arizona medical center in flagstaff, AZ for sever head injure from which she has recovered. It is my belief that the ignition failures that have shown up on other GM cars is also a problem for the 2008 GMC Acadia and possibly other like models of GM vehicles. In my opinion it has to be ignition switch failure that shut down the engine, power steering and air bag system causing this accident.

- Chino Valley, AZ, USA

The transmission had been hard shifting from 3rd to 4th for about 200 miles. At 25 mph while turning through a very busy intersection the engine revved shifted through what felt like every gear, the car lost acceleration power; going from 25 mph to 10mph. Parked the vehicle. Restarted to find that only first and second gears worked and the check engine light illuminated. During the 200 previous miles of concern; I had heard a faint whine during acceleration. The first time any trouble occurred the vehicle was stopped behind a school bus loading and while I applied the brake (still completely stopped) the car lurched forward. I immediately shifted to neutral, not wanting to rear end the school bus.

- Grantville, GA, USA

Engine light came on now it wont go off. We were not speeding at the time we were only going 5mph so we shut car off waited and turned back on engine light came back on and is not going off.

- Washington, DC, USA

Car has been shaking and knocking when I brake. I reported this issue to the local GMC dealership when I first brought it in. I actually brought it in to fix something else. This car has many issues. The most recent time I took it in was on September 4th. They want to charge me over $2000 just to try to find the problem even though they already told me it is the transmission. They know that GMC Acadias have been having issues with transmissions (check GMC transmissions board at edmunds.com). Actually GMC should do a recall of these vehicles for this transmission issues as many cars are all having the same issue. I only have 72000 miles on this car and I bought it brand new. So it is an absolute shame that this car is always having transmission issues. I think the dealership already knew that it was a transmission issue when I brought it in several months ago but they never fixed it or addressed it then. I have the records to prove it. Now they want to say it is a transmission issue and want me to pay $2000 just to do an assessment.

- Oakland, CA, USA

While out shopping with my children when I attempted to turn off the vehicle to depart for the mall, the ignition turned to the off position, I removed the key but the car remained on. I then noticed that the check engine light illuminated. Shortly after, the car began shaking violently; I assume as it was attempting to shut off. I inserted the key, shifted into to reverse, pulled out of spot and then back in again. Proceeded to turn vehicle off and again, key removed but car still running. Again the violent shaking along with loud noises began. Afraid, I instructed my children to leave the vehicle. We got a comfortable distance from the vehicle and continued to watch. It took 25 minutes for the car to shut totally down. When I went back to the car, as I opened the door, I noticed the warning sound as if the key was in the ignition and also although the entire dash was off, the check engine light was still on, (im not sure how since the car was "off" and no key inserted). I drove the car home and the same thing happened when exiting the vehicle. The car remained on, began shaking and the check engine light also stayed on after the car was totally shut down. Very scary experience. I noticed via the internet that this was not a new issue. I wonder why GM would not have corrected this problem with its vehicles by now. I am a single parent and my teenage daughter sometimes has to run errands for me in this vehicle, I would hate for this to happen when im not with her.... its was frightening enough for me!

- Redan, GA, USA

GMC Acadia 2008. Water leakage from sunroof and or windshield, entering columns containing airbags (water was leaking out of airbags on columns) and down into dash board and down to carpets. Mold building up in roof liner and carpets. Electrical system malfunctions on temperature gauge.

- St Louis, MO, USA

I own a 2008 GMC Acadia. Water leeks from the roof of the car coming in through the sun roof and then leaking through the top cover of the ceiling down onto the third row and down through the front beans where the fuse box is. I have contacted GM multiple times they gave me a reference # of 71-941161425 they continue to say that my truck does not fall under the recall even though they have recalled the same model and year for the exact same reasons. This has the potential of shorting out the fuse box while driving making this truck unsafe to drive the potential of mold build up. I have a 15 month old daughter that is supposed to ride in this and the last thing I need is water from the ceiling dripping on here that has gone through the mold that has built up inbetween the roof and the ceiling cover. GMC refuses to do anything about this stating that is out of warranty. If this fuse box shorts out while we are driving and causes an accident where bodily harm is done GMC is directly responsible for it. I have bought this car recently thinking it would be safe and I was wrong.

- Elk Grove Village, IL, USA

I noticed that when driving on an expressway and would attempt to pass a slower moving vehicle, as I would move into the passing lane and attempt to accelerate, the car would hesitate for a few seconds, lose speed, then suddenly downshift and accelerate at an unexpected rate. I also noticed that the car would unexpectedly accelerate or decelerate under normal driving conditions. I bought the vehicle to the dealer for repair, they responded that they could find nothing wrong, but the what I was experiencing was characteristic of the 6-speed transmission on the vehicle. The problem continued and I found it dangerous. I returned the vehicle and the dealer's remedy was to "reset the transmission computer." During this time, I also noticed that the "service stabilitrac and traction control" warning would come on. Onstar recommended I shut off the engine to reset the system. I found this only happened when I first used the car in the mornings to go to work. Again, the dealer said there was nothing wrong and the computers were showing no codes -- they also stated that they could not duplicate the problem. I got the car back from the dealer and it happened again - at 7:00 am. I called onstar and they gave me two codes. I bought the car back to the dealer and gave him the codes. It now seems that there were two defective sensors controlling the stabilitrac / traction control system and how they communicate with the transmission. I was told that GM is changing manufacturers on the sensors. I have not had use of the car since the beginning of June and am still waiting for GM to produce these parts. In the meantime, unexpected acceleration, deceleration, and gear shifting was occurring under all driving situations causing -- in my mind -- a danger to myself, my passengers, and others. The dealer has had the car on five different occasions since June 8. this last service they have had the car since July 20.

- Brooklyn, NY, USA