general problems of the 2018 Chevrolet Traverse

I’ve had this vehicle for about a year or less the car ran fine with minor problems that come with having a vehicle. Up until last week the car never showed any signs of a failing transmission, it went from running fine to shuttering and suddenly I wasn’t able to reverse. The check engine light never came on, I’ve did all my routine checks and more with the dealership I bought it from and was never told anything when the vehicle was brought in for inspections.

The transmission on my 2018 chevy Traverse went out per the mechanic that recently inspected it. It was just purchased from a chevy dealership not even 8 months ago. I first noticed the problem a couple weeks ago when my car hit about 25mph getting on the highway then wouldn’t go any faster as I would try to accelerate speed, then it was jerking and was harshly engaging from time to time. Then it finally felt like someone crashed into the back of my car it jerked so hard and then accelerated but only went up to 40mph and wouldn’t go any faster. It would hit 40 mph and then idol at the speed when you would hit the gas to accelerate. No engine light came on or anything at that time. Then a couple days later the shifter would be put into reverse and then not go in reverse when you hit the gas to go. Having two young kids, my husband told me it wasn’t safe to be driving it at all. We had it towed to a mechanic shop to be inspected since we depend on a car for our job. The mechanic inspected it with a diagnostic code reader as well as looking at the transmission. The overall condition is that the transmission is not working anymore. I have done research and for this specific make, model and year there are tons of recalls for the transmission.

September 26th 2023 I noticed my Traverse accelerated by itself while in park I reported the evap issue made my check emgine light come on and stay on I noticed gm recalled 2019 Traverses and up a year models for the same reason but not 2018 models on September the 7th 2023 I also got a code saying control moduoe communication chassis expansion can bus offf when the check engine light ccame on also please help me with this matter I have a child I have to be responsible for im scared of this problem.

2018 chevy Traverse when decelerating around speeds under 35mph city driving the vehicle will randomly rev up and the rpm will go up to 4000 or 5000 rpm, this also happens while braking. Sometimes the car will jerk forward as if it was going to accelerate and other times it just stays at a high rpm for 5 seconds or less until I either come to a complete stop or try to accelerate and it does not respond. The engine sounds like it is in neutral and the accelerator is being held down. It also does not respond to the gas pedal when it is reving like this, and if I try to accelerate the car will eventually kick into gear and lunge forward. Took it to the dealer withing the first few months of owning it and they could not replicate the issue and said the computer did not return any issue. This problem comes and goes since I bought the car brand new in 2018 and concerns me, because it feels as if the car is accelerating on its own and may cause me to crash.

Started SUV then noticed check engine came on once driving. Went down a major road and noticed the SUV was losing power and wasn't shifting properly. Had my kids in the car and was able to turn around to get back to my house. Once I got it to a safe spot I pressed on the gas to properly park it. Then the SUV jerked forward in a sudden amd hard fashion and I almost hit the car in front of me.