2009 GMC Acadia: jerking or lurching

Filed Oct 19, 2015 · Seats · 39,215 miles · AL

Tl* the contact owns a 2009 gmc acadia. While driving 65 MPH, the vehicle jerked when the accelerator pedal was depressed. In addition, the driver seat failed to go backwards. The dealer diagnosed that the failure was due to the seat track and needed to be repaired. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 39,215.

Filed Oct 8, 2015 · GA

My check engine light it on. While driving and sitting still my car will jerk multiple times. Make a squealing noise, grinding noise and when accelerating from a stop it feels like my car does not want to move. The squealing noise also occurs when car is being cranked. The tire sensor light has come on recently as well and I have put air in my tires but the sensor will not go off.

Filed Dec 9, 2014 · Engine, Transmission · 82,000 miles · TN

We purchased a 2009 acadia from a reputable dealer that claims quality in regards to their used vehicles. We have had the vehicle for 6 months and the vehicle has left me stranded on different occasions and compromised others individuals and my own well being. First incident the car was in gear but would not start. We never found the reason the vehicle would not start. The battery fully charged. No other issues noted. Second incident the vehicle the vehicle again did not start after several attempts to start. Eventually car just started, no issue was uncovered as the culprit. The vehicle overheated out of the blue while in route to respond to an emergency call and had the water pump replaced. While on the interstate with my 4 month old grandson the vehicle jerked after reaching the speed of approximately 65 MPH and then the RPM registered about 3800 to 4500 and the vehicle came to a crawl on the interstate. The check engine light came on and I took it had diagnostics ran and it indicated transmission concerns. I took the vehicle to the dealer and the light had gone off and the dealer stated that there was nothing found. My husband and I left and while in route to another city the vehicle again jerked at approximately 65 MPH and the RPM once again registered between 3500 and 4500. We were able to crawl along at about 25 MPH and barely made it safely to a certified gmc dealer which stated that the transmission was completely gone and we needed another and the cost would be approximately $3900. The dealer refuses to honor or stand behind their product. We recently had the vehicle at the dealer to ensure safety recalls were taken care of, the dealer indicating no concerns after a "proposed" inspection. There is clearly documented concerns with this issue. We were lucky as there were no injuries, but the situations that we were left in were extremely dangerous.

Filed Nov 20, 2014 · Transmission · 76,176 miles · AE

While driving our 2009 acadia at highway speed (75mph) we experienced a sudden RPM spike and lose of acceleration. Any attempt to apply gas was just met with RPM with no acceleration. As speed slowed the vehicle lurched and the transmission engaged as we approached 40 MPH. The vehicle struggled to maintain this speed and would constantly lunge and lurch trying to change gears to adjust for the speed. The timing was not good for this as we are stationed in germany, and we were an hour from home driving on the autobahn. While we were struggling to stay at the minimum speed (roughly 40 MPH), other vehicles are approaching us at autobahn speeds, potentially causing an accident. Fortunately, germans are very good drivers and very aware of slower moving vehicles. We were fortunate to have pull off areas to cool the transmission, but our trip took five hours. Apparently this is a known issue with the 6t75 transmissions that gm put in the 2007-2009 acadia's. No service bulletins or warnings ever went out to me to let me know about this issue. If I would've received one, I would have been able to catch this earlier and been able to save the transmission from catastrophic failure. The 3-5-r wave plate failed preventing shifting to those gears. I believe gm needs to own up to this and either issue a recall or offer owners with less than 100k miles on their vehicles compensation for the repairs. At a minimum, all acadia/enclave/traverse/outlook owners with 6t75 transmissions need to receive a notification to expect the imminent failure, in order that they may get the 3-5-r wave plate replaced with a properly tempered plate. Gm has already identified the reason for the failure, but has chosen not to act in a manner reflecting integrity to their customers. Thank you for your time.

Filed Aug 25, 2014 · Transmission · 69,000 miles · VA

Tl* the contact owns a 2009 gmc acadia. While driving approximately 20 MPH, the vehicle jerked without warning. The contact also stated that shifting was difficult. On one occasion, the vehicle was shifted into reverse and the contact depressed the accelerator pedal, but the vehicle failed to reverse. The failure occurred on multiple occasions. The dealer stated that the transmission needed to be replaced. The manufacturer was notified of the failure. The approximate failure mileage was 69,000.

Filed May 16, 2014 · Steering, Transmission · GA

Tl* the contact owns a 2009 gmc acadia. The contact stated that the vehicle would jerk violently intermittently. The contact noticed that there was water leaking from underneath the vehicle. Additionally, the power steering assist would sporadically seize accompanied by an abnormal noise when completing a turn. The vehicle was taken to a dealer where it was advised that the water pump and ignition coil needed to be replaced. An unknown repair was made to the steering component to rectify the failure. On a separate occasion, the vehicle was taken to the dealer for routine service where the dealer advised that the tie rods failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was unknown.

Filed Mar 31, 2014 · Transmission · 81,453 miles · CO

My wife was driving home from work when she experienced erratic operation of her vehicle. When taking off at first the vehicle lacked power then suddenly the engine RPM raced and the vehicle lurched forward. The engine speed was uncontrollable with the throttle. At a stop light the vehicle would barely take off and suddenly engine RPM's would race and the vehicle would surge when throttle was applied. The vehicle was driven directly to the gmc dealership on the way home and at that point it was determined the reverse gear was completely inoperative. The transmission failed due to a broken reverse wave plate. Vehicle was delivered new 7/10/09 (less than 5 years). The transmission replacement final billing was $3,906.54.

Filed Apr 9, 2011 · Steering · 42,845 miles · OH

Power steering stopped working while turning at red light if you rev up engine you can turn at idle no power steering pump jerks and spits fluid out ordered new pump call gm they say they know but its not there problem when are going to fix there problem when some one gets killed this vehicle only has 43,000 on it.