2017 GMC Acadia

On [XXX] my 2017 Acadia Denali started driving poorly and a steering assist reduced message appeared. I had O'Reilly scan for error messages and they were: P0128 and P0826-00. The dealership confirmed that they would need to replace the thermostat. The Buick GMC Beaverton technician made a video of my vehicle: [XXX] My safety was put at risk due to the risk of my steering going out. My car intermittently was having trouble engaging in driving (it randomly acted like it was not firing, it was "jerking"), I heard my cooling fan come on immediately the next day when started my car to drive it to the GMC dealership. I feared that my car would just die going over a mountain pass without cell coverage. On [XXX] I had the same steering assist reduced message and then replaced my thermostat at 39,228 miles. I will need to replace this again, 37,638 miles later. The GMC service technician mentioned that this is a typical problem for my car, and I have discovered a 2022 Acadia recall for their thermostats. Please extend this recall to include the 2017 Acadia. The component was not inspected by the police or insurance rep (yet), but it was inspected by the GMC dealership and O'Reilly veri scan. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle will apply breaks abruptly on its own whenever it thinks a vehicle is too close. Was in traffic and it kept slamming on the breaks as I would try and move forward. Will slam on the breaks whenever I attempt to just slow down during the course of driving. Was on the highway and anytime I pressed the breaks to slow down, automatic breaks would slam down breaks on its own. Drove vehicle right to dealership as the was a major safety issue for me especially with my baby in the car.

The contact owns a 2017 GMC Acadia. The contact stated while driving at approximately 5 MPH, the vehicle experienced phantom braking. An unknown warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was 114,590.

I bought my vehicle in 2020. In 2019, there was a special coverage notice (N172097060) with part repair because of known service side detection issues for water module intrusion. My understanding is this is due to the poor design and placement of the item in the rear of the vehicle that is known for getting water in it when driving, which then impacts the entire electronic system (not just service side detection). Beginning in spring 2023, I began to have these issues, starting with service side detection first. I then had other major electrical issues connected to this issue I believe are a safety concern. I have had very scary episodes at high speeds of my entire car electronic system shutting down, speedometer going to zero, gas going to empty, glitching and not starting multiple times. It got to the point my entire car was not drivable due to this issue - the dealer has a temporary fix on it to allow it to continue to be drivable until parts are in. The dealer has confirmed the issue I am experiencing is this safety special coverage issue from 2019. I contacted the dealer I bought my car from and they stated they did the special coverage fix in 2019. They confirm this issue is occurring again. However, they claim that because it was fixed in 2019, I am responsible for paying and fixing it this time around. The issue was not resolved and I believe this is a huge safety issue that should be a recall, not just a special coverage. It was very scary driving on a highway with my children in tow and having my entire system go out at a high speed. It has been inconvenient, parts are supposedly on backorder and being told it's my responsibility to cover it when it's a known issue. I have also found online many other owners having this issue. The special coverage did not fix it if water continues to get into the module and continues to generate these issues again. I appreciate any assistance on this matter and thank you for your time!

Shift to park error code along with several other error codes including no remote detected that have continually and intermittentantly appeared since my car was at 16 K miles. My car has been in the shop over 10 times and these problems continue to return. my car won't shut off correctly, and this drains the battery. On 2 different occasions I was locked inside my car, unable to start it. Both of those times the outside temperature was over 100 degrees, and I almost had to break my window to exit and survive. I frantically pushed several buttons, trying to start the car, and luckily something tripped so I could open my car. The dealership replaced my battery twice before 31 K miles. They have replaced 2 different fobs when the car didn't recognize them. The dealership has replaced the transmission control assembly, the body control module, the fuel injector, the immobolizer control module, the brake control module, and my car has currently been in the shop for over 3 weeks as they may also need to replace the instrument control module and HVAC module due to those error codes. My car is at 46 K miles and has been in the shop 3 different times since 39 K (less than 10 K miles) all for similar problems. Thankfully I bought the extended warranty that will expire in 2 years. Something is draining the battery and GMC cannot or will not address the problem. There are similar documented cases: https://lemonlawexperts.com/gm-shift-to-park-recall-update/#:~:text=According%20to%20NHTSA%2C%20GM%20has,several%20model%20year%20Acadia%20vehicles. and https://gmauthority.com/blog/2020/05/gmc-acadia-shift-to-park-class-action-lawsuit-filed-in-texas/ Please help to make GMC resolve this complicated problem! I now keep a tool in my car to break a window if I ever get locked in. I also keep my AAA membership active as I have had to get my car jumped several times. I do have videos of the problem, but cannot send a MP4 file.