Various times when putting the car into park and then turning off the car the message stating action required: Shift to park will show on the console screen. The car will not turn off until the car recognizes the gear is in the park position, which it already is. It takes some shaking of the shift button to get the car to register that the gear is in the park position. It used to happen maybe once a month but now it seems to happen a few times each week.

- Eastvale, CA, USA

2016 gen 2 Chevy Volt experiencing error message of 'shift to park' even though car is in park. Car will not turn off until message cleared and that takes several attempts. Issue is widespread based on internet search. Also, transmission cooling fluid leak from transmission coolant intake line requiring complete replacement.

- Escondido, CA, USA

This is an update to my original complaint #:11299056 for un-commanded acceleration on 1/13/2020. The Chevy dealership worked with GM corporate engineers and were unable to duplicate the problem after several days. The returned the car and blamed it on the floor mat. This is not likely since the mat is a oem heavy rubber mat and the accelerator pedal does not rest on the floor board. Since the car was returned and driving for weeks, I noticed the battery range will not charge more than 49 miles of electrical charge when it often charged up into the 50-60 mile range prior to the incident. I've been driving the car in slower heavy traffic lately and this driving style often increases electric mileage range after a full nights charge. It will not do so anymore even though the economy management screen indicate maximum range economy of over 250 mpg. I'm a retired gas turbine mechanic and I know a problem when I experience one. I suspect that a battery cell may have had an uncontrolled discharge and is no longer able to accept a recharge. I have relayed this information to the dealer. No response yet.

- Bonita, CA, USA

Car won't shut down and states shift to park on screen while car is in park. Shift assembly is bad.

- Pompano Beach, FL, USA

Un-commanded vehicle acceleration under full electric drive mode (twice). While driving steady around 65 mph on the freeway (no cruise control used), a slight step on the accelerator, caused the car immediately accelerated up to 88 mph (dash show large electrical draw of battery power). Stepping on the brake, using the regen paddle on the steering wheel and repeated pressing the cruise control power didn't disengage the power surge. Car would accelerate when brake pressure was lifted. After repeated hard pressing of the brake pedal, there was a "clack" sound from below the driver console and the car returned to normal. Being on the freeway, I was not able to pull over and restart/reboot the car. I continued to drive cautiously, monitoring the car and left the freeway for surface streets. Everything seemed to be okay until I came to a complete stop behind traffic. When traffic started moving again, I lightly depressed the accelerator pedal and the car began accelerating quickly on it's own. Several hard presses of the brake pedal and the car returned to normal. This second incident was not as violent and the first and there was no "clack" sound from below the driver dash as with the first. This is worrisome and cannot be related to the cruise control since is was at a stop and cc isn't supposed to engage under 25 mph. The rest of the several miles to my work was uneventful. I've contacted the dealer about the safety of driving it or having it towed. Waiting for their response. I imagine the on-board computer would've stored today's driving data.

- Bonita, CA, USA

When parking the car after having stopped, ant error message 'shift to park' appears on the display even though the shifter was in park. This problem prevents car from being turned off.

- Santa Clara, CA, USA

Unable to turn off power to car with error on dashboard saying shift to park. Have to power on and off several times while moving the shifter in and out of park to get the car to turn off.

- Kent, WA, USA

This vehicle has a shift to park message that been seen on many GM vehicles. Some of the owner sites I have been to say that this is covered under warranty. I have not been so lucky with GM. The dealer did cover 1 repair of this problem but now says I have to pay. The problem has returned and persists. A shift to park message is displayed on the dash after the car is in park and will not shutdown. I have attached all the documentation that I have.

- Fallston, MD, USA

Sensor does not recognize when car is in park. Continues to run and will not turn off when in park. Error message displayed is "shift to park" even when in park. This is a safety issue because car will not disengage or turn off. This occurs frequently.

- Landenberg, PA, USA

Shift to park displays after you've set the car to park.

- Albany, OR, USA

All vehicle systems are not registering that the vehicle is in park when the shifter is in the park position. The instrument cluster gear indicator registers the vehicle as in park, but when attempting to power down the vehicle an error message occurs directing the driver to shift the vehicle into park. When exiting the vehicle the doors will not lock.

- Imperial Beach, CA, USA

When vehicle is shifted into park position and engine in powered off, the dash reads out that vehicle must be in park position. I have to jiggle the shifter or depress the button several times to engage into park position. If this is ignored the vehicle does not register in park and cannot safely be left unattended. This occurrence has been happening for over a month at a daily rate. The dealership does not honor the power train warranty for this issue.

- Calimesa, CA, USA

My vehicle was stationary in a left turn lane at an intersection. I took my foot off the gas and pressed the gas pedal to accelerate the car through the intersection. When I pressed the gas, the car did not accelerate. I repeatedly tried to accelerate and the car seemed to not even idle because it would roll backwards when the brake was released. After a while there was some weird noises and the car did some unusual shaking. I also observed on my dashboard that the car was switching between the electric battery power and the gas fuel power. I was not clicking anything to do this it was doing it while I had my foot on the brake and was touching nothing else. After about an hour and many tries the gas finally engaged and I was able to pull the vehicle into a nearby parking lot but there were still various noise problems and shaking. Had the vehicle towed to the dealership to have it serviced. The dealership said the transmission failed and a new one was sent and put into the vehicle. The vehicle only had 1080 miles on it.

- Cincinnati, OH, USA