What 300 owners told NHTSA about the 2012 GMC Acadia Denali

Was waiting on dealership to catch up to bring in for a transmission problem. I know it is transmission related due to not wanting to shift properly and the fact my friend has same make and model only about 100000 more miles than mine does was doing same symptoms and she took to 3 or 4 mechanics and all said nothing wrong..no codes show up...needless to say after about 2 months it stalled out on her on interstate with speed limit 75 and she barely moving. I myself was at a sharp curve in turn lane waiting on traffic and when I braked to stop it made horrible sound and felt like brake was pushed through floorboard. When I was clear to go i push accelerator down to the floor and am barely inching along and am now stuck in the road in a 90 curve where its hard to see traffic coming. This was very scary and traumatic having this happen. I'm just glad it was only myself and the other drivers were being observant and paying attention to the road. This has happened a lot compared to research on blogs car complaints websites. The common problem is it doesn't give a code when diagnostic checked. 99% of cases show they best guess or find something else wrong and you pay 3 or 4 charges until you finally convince them its the transmission and then you're out 5000. Not counting the average 4500 you've already pd due to not listening to the driver of their vehicle and causing unnecessary charges and leaving you without a vehicle too long that isn't necessary.

NHTSA ODI 11431779

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 [XXX] 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 [XXX] AND ADVISED HIM OF WHAT HAS HAPPENED WITH THE VEHICLE WHILE ON VACATION. [XXX] 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 [XXX] AND SHE GAVE ME A CLAIM #[XXX] 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. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI 10701556