2017 GMC Acadia: transmission slipping

Filed Jul 23, 2025 · Transmission · 77,000 miles · NY

The contact owns a 2017 GMC Acadia. The contact stated that while driving at an undisclosed speed, the transmission was slipping while attempting to change gears. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 77,000.

Filed Jul 30, 2023 · Transmission · MA

My Wife and I purchased the 2017 GMC Acadia All Terrain in August 2017. It always had some low gear hard engagement issues. It also had issues of not locking into park when placing in Park. If we released and re-shifted it would engage. On two occasions we had the GMC dealership Durand GMC Leominster MA. check the transmission. Around 34,000 miles and again around 55,00 0 miles On both occasions they claimed they could not recreate the incident I complained about. I told them I believed that to be impossible as it was common, especially going up hill. The service manager was adamant that their was no issue. As I was close to my powertrain warranty expiring I asked again with the same response. In May we started having serious transmission slippage, It became dangerous so we took it to Durand and they found a hole in a fluid tube caused by wear from a support clip. Their repair cost was high, I took it to a respected mechanic. He repaired the tube, unfortunately, the slipppage got worst and we will replace the transmission. My internet research shows many incidents like mine. I want to make it known that my vehicle concerns were swept under the rug. GMC repair video link Please watch the video of YOUR vehicle at this website: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 14, 2023 · Engine, Transmission · 78,588 miles · FL

The contact owns a 2017 GMC Acadia. The contact stated that while driving at various speeds, the transmission was slipping, and the vehicle would not properly accelerate. The vehicle was taken to the local dealer who replaced the camshaft and timing chain however, the failure persisted. The vehicle was later taken back to the dealer who later replaced the transmission. After replacing the transmission, the check engine warning light remained illuminated. A diagnostic test was performed, and it was determined that the camshaft and timing chain was faulty. The vehicle was not yet repaired. The manufacturer was not contacted. The failure mileage was 78,588. The VIN was not available.

Filed May 11, 2023 · Transmission · 150,000 miles · CO

The contact owns a 2017 GMC Acadia. The contact stated that on various occasions after shifting into park(P), it was not recognized and the "Attention Required, Shift to park(P)" message was displayed. The contact stated that multiple attempts at shifting the gear into neutral(N) or reverse(R) were needed for the park(P) to be recognized and for the contact to be able to turn off the vehicle. The contact also stated that while driving at various speeds, the transmission was slipping. The vehicle was taken to an independent mechanic, where it was diagnosed that the transmission needed to be replaced. The manufacturer was made aware of the failure. The approximate failure mileage was 150,000.

Filed Jun 30, 2022 · Transmission · GA

The transmission began to shutter/shake while trying to accelerate. Transmission slips occurring frequently causing the vehicle to not propel forward while driving causing huge risk while driving.

Filed Jun 4, 2018 · Engine · 200 miles · OH

I went to a local dealer and complained about a vibration/rumble while driving. It happened mostly around 1200-1700 RPM. The service manager heard of the problem. There was a manufacturers bulletin outlining the problem and suggesting a fuel management software upgrade. This was done. The bulletin also applied to cadillac xt5, which is on a shared platform with my 2107 gmc acadia denali awd. There are now several new RPM ranges when the vibration/rumble occurs in addition to the old 1200-1700. Not only has the old problem re-appeared but there are certain conditions about 1500 RPM when I am starting out from a stop for about 50 feet where the problem seems to almost stall out and then with a big clank (like down shifting or transmission is slipping and then suddenly engages) and takes off. I cannot help but think there is going to be a mechanical breakdown of something due to the sudden engagement and clank or even stalling out in traffic, if this problem is not fixed. I contacted the dealer once again but have not heard back yet.