In 2 years of ownership I have replaced 4 ignition coils and the vehicle now needs yet another. At roughly 85000 miles (and year 5) the transmission wave plate failed. GM would only authorize a rebuild (last week).

- Prospect, KY, USA

Various GM vehicles have a known defect that allows water from the sun roof drain to enter the passenger compartment and more importantly allows water to enter the passenger compartment fuse block. This defect is covered under service bulletin #08-08-57-003C. This vehicle has had numerous electrical system issues that only occur during heavy rains and the dealer has been unable to recreate the problem after things have dried out so to speak. Most recently after a heavy rain, the battery was dead and when replaced with a new battery, the engine would not shut off even after the key was removed. This is a serious safety concern that can result in injury or death. The only way to shut off the engine is to remove the ECM fuse from the under hood fuse block. Not being able to shut the engine off via the key can have serious life consequences in the event of an emergency. This is a wide spread issue that seems to get worse over time and ends up with not being able to shut the engine off. The GM models affected by the service bulletin as follows: 2008-2012 Buick enclave 2007-2012 GMC Acadia 2007-2010 Saturn outlook

- Simpsonville, SC, USA

I bought my GMC Acadia, used with approx 50,000 miles on it and have owned it for less than 4 months and with in the last month have replaced 3 ignition coils and I am assuming will have to replace more. From my understanding there is no issue that is causing the coils to fail other than the part is going bad. And what I was informed is that GMC is now using a different type of ignition coil which would lead me to assuming that the ignition coils they put in the Acadias are faulty. And now the owners are left to foot the bill, which does not seem right. The tough part of my situation is that I purchased this GMC after trading in my Pontiac GTO that was in the shop for 10 months while GM sat around doing nothing for me. All 5 vehicles that I have owned were GM vehicles and needless to say now, I will not be purchasing a GM vehicle ever again. GM customer service is the main reason for this. I understand that these thing happen but GM should make the situation right and have not even come close to making me feel valued as a customer.

- Centralia, MO, USA

Initially noticed when shifting from park to another gear shifting was hard. About a week later noticed hesitation in shifting gears while driving at various rates of speed then the engine would rev once it shifted into gear. Eventually parked the car in drive then went to back out to take to dealership and it would not go into reverse. Vehicle towed to dealership where they replaced the wave plate and other parts that were contaminated. Since this incident the vehicle has not drove smoothly or shifted gears smoothly. It also gets less than 15 miles to the gallon during my daily commute now where prior to the transmission fix I would get 19-20. Vehicle hesitates and revs continually while driving and accelerating. When I returned the vehicle to the dealership stating there was still an issue I received "we could not replicate the issue" and sent on my way. After research on this site and other and reading the systemic issues others have had just like it I am concerned for my family and those around me safety if the transmission decides to stop while traveling high speed in traffic or when crossing traffic.

- Pasadena, MD, USA

When accelerating, my car seems to 'slip' or 'stutter' before clicking into gear. This happened in the first year of ownership. The dealership never acknowledged it when I would bring it in to get checked. After a few years of owning it I now know that it is a transmission issue very common with the GMC Acadia. I have read that it is a faulty wave plate. Not sure what that is but now with only 50,000 on my car it is really bad. It barely made it home last night. Transmission is totally slipping and even when just driving along at the same speed it went into limp mode. The gas revved like I was in neutral. This is extremely dangerous as I had a carload of girls on a trip to the mountains. What is it going to take until this causes an accident and casualties! GMC needs to step up and get this part recalled. It is a faulty part and they need to pay for the replacement!!!

- Danville, CA, USA

Bought used 2009 Acadia in 2011 with 55000 miles and nothing but headache 1) 60K miles: Liftgate came crashing down my wife's back while getting the groceries. They should have some safety measures to stop the gate from crashing. 2) 70K miles: Truck wont start in drive way. Towed truck to dealer and they changed fuel pump. 3) 70K miles: Engine misfire code. Replaced one coil. 4) 76K miles: Coolant always low. Dealer changed water pump. 5) 76K miles: Truck hesitate and feel a misfire between 45 and 55 mph. Took truck to dealer and they quoted me over $3300 to replace all coils, spark plugs, steering wheel column and steering rack busing. 6) since we bought the car we cant even drive it with the windows down or the roof open. The truck shakes roughly with both roof and windows open.

- Kingston, NY, USA