Vehicle Shudder problems of the 2012 GMC Acadia

When driving my car and holding the speed at 50-60mph the rpm begin to fluctuate and the car shudders. Also when going up hills it does them same thing and and feels as if it has a harder time shifting. My car only has 97944 miles on it.

Under acceleration the vehicle shutters between 1100-2300 rpm the vehicle shakes and is a very common issue with all of these vehicles this major transmission issue must be addressed as this is a wave plate issue in the functionality of the transmission my vehicle is currently at 86,000 miles and is experiencing this issue and must me addressed if not this can result in a sudden loss in power on the highway causing a potential accident this recall was executed on the 2007-10 Acadia, traverse, outlook. Number 10126145.

Car make some vibration and loss power at between 2000 and 2700 rpm, when I make some aceletion on low rpm, and make some noise when transmition need change gear, up o down, on low rpm, dealer in first time, say the problem was a throttle body, and I fixed, but a problem keep going, went I returner to dealer shop, now they say it's a tramition problem.

Vehicle shudders and engine surges if engine rpms drop under 22oo. Car does not drive smoothly. Has tripped into "limp home mode" while driving on 4 lane highway at 60mph. Vehicle had to be towed. Dealer "said there was not error code to repair", have taken it in on 4 different occasions with a repair to fuel relay repair, motor mount, and twice with no repair before warranty was up, now outside of warranty in mileage. This vehicle is not safe. Problem has been going on since August 2017.

Vehicle shudders and jerks at all speeds. It is particularly worse at lower speeds. The automatic transmission is acting like someone is popping the clutch on an manual transmission. It is scary and dangerous to drive when this is happening, however it only happens intermittently. Have found many similar complaints via google, however cannot get dealer to address the issue as no error codes are present and they cannot recreate the issue.

On 03/07/15 at approximately 1715 at tyler state park our vehicle was backed into the parking space on a slight incline at cabin one. Our 3 year old daughter was in our 2012 GMC Acadia in the driver seat and our friend’s 9 year old son was in the passenger seat; with the vehicle in park the ignition turned off and the keys in my husband pocket. Our 3 year old daughter was able to get the vehicle out of park and into drive, causing the vehicle to roll forward down the incline, across the street and hitting two trees. This caused damage to the bumper and right quarter panel causing the passenger door to catch on the metal frame when opening the door and the front end of vehicle shakes when driven between 65mph-70 mph. Both children were ok with just bumps on their heads. I called the gm dealer in tyler, TX and was advised by tim to contact a gm dealer when I returned home since the vehicle was drivable and we were on vacation. On Monday March 16, 2015 at approximately 0715 I called texan GMC and spoke with tony and advised him of what has happened with the vehicle while on vacation. Tony advised me I could bring the vehicle in to have the recalls fixed but I would need to call GMC customer service @ 800-222-1020 and get and incident report started with them and see when they would like to have a technician take a look at the vehicle. I called GMC spoke with cheryl and she gave me a claim #71-1451210965 I then took the vehicle to have diagnostic testing done on Monday 03/16015 and was called on Monday 03//23/2015 advising me that there were no finding of a malfunction with the vehicle and that gm will not be fixing any damage to my vehicle that was a result to this incident. No matter their findings there is a malfunction somewhere and I feel that gm does not want to admit to there being a malfunction. I just want the issue fixed so this does not happen again.