2016 GMC Acadia

Technician told me the engine "grenaded itself". "Cylinder #4 melted into the side walls of the cylinder wall caused by air to fuel mix ratio controlled by the ECU failure to mix appropriately." My family and I were traveling for Easter and were stranded on the side of the highway. I had a private repair shop (Greenville Auto Clinic LLC) confirm as well as the local dealership Greenville Chevy. The vehicle required an engine replacement. I did contact GMC's Zone Manager out of Atlanta, GA for assistance, he reduced the bill from over $10,000 down to $6098. There was no error messaging, only an engine that would not respond to the accelerator pedal. The engine would try to accelerate, but struggled to the point it would die when I applied too much pressure on the gas pedal.

Hello. I got a recall and fixed in July 2021 for Blind Spot Sensors/Modules on my 2016 GMC Acadia SLT. Now 3.5 years later Im having the same issue with these sensors that are located in the rear bumper of the car, they get water damage, corrosion, and then fail. A very poor design. And seems like the recall didn't fixed the issue either. This must to be a common issue for this car, lots of complaints online even after the recall. And the car dealership wont cover it because it was already fixed at that time and my warranty on my car expired not to long ago. They said it would be about $2000 to fix. I feel like this prematurely failed and it was recalled once for the same issue but now failed again is crazy after 3.5 years. This shouldn't be a on going thing especially after a recall. I shouldn't have to pay for this outta my own pocket for a flawed design and would like my repairs for this to be covered again. Please help. Attached is a invoice from July of 2021 recall that was repaired. I only got a verbal estimate from the dealership (text messages) which I do have. saying that it would be a $2000 fix this time. I didn't go through with it because I feel like it should be covered. Attached pictures of sensor/module in rear bumper that is corroded. Lights on both side mirrors will come on and stay on. Won't shut off. Messages on dash saying "Service Side Dectection System". Blind zone setting won't shut off.

The shift to park. It does not want to stay in park. I feel that if it does not stay in park, the vehicle could roll forward or backwards. Yes, it was looked at by an independent service center, and they thought it was on a recall. This is a 2016 GMC Arcadia and the 2017 model and newer have this problem and were on recall. No one else has looked at it. I do not drive the vehicle that often, so it does not have many miles on it. I took it out a few weeks ago and I noticed it.

Odometer Fraud. The contact purchased a 2016 GMC Acadia on February 28, 2026. After purchasing the vehicle, the contact obtained a Carfax report and discovered that there was a mileage discrepancy. The vehicle was a dealer sale. The contact called the dealer and was informed that the vehicle was purchased at an auction. The dealer agreed to refund a portion of the cost of the vehicle. The contact attempted several times to contact the dealer afterwards but was unsuccessful. At the time of purchase, the mileage was 92,400, and at the time of registration, it was discovered that the mileage was 192,000.