Owners/service Manual problems of the 2016 Chevrolet Volt

For the last two weeks, a "shift to park" message has been occurring increasingly upon vehicle power off. Vehicle has 29716 miles. Typically occurs upon parking the vehicle and shifting into park when the vehicle is at a full stop. Upon depressing the power button to power off the vehicle, a shift to park" message appears on the instrument cluster. (which is odd since the vehicle shift is already in park. ) the vehicle will not power down as long as the "shift to park" message remains on the instrument cluster. Attempts to clear the message from the instrument cluster do not seem to be detected. (tried wiggling shift; depressing the shift trigger; shifting to drive and back into park several times; open and closed door several times; depressed power button on and off several times with no apparent effect. Vehicle eventually clears the shift to park message and allows the driver to power off with no apparent connection to a clear cut method to manually clear the message. (there is no typical time that can be relied upon for the eventual clearing of the message from the instrument cluster to return to normal power off functionality. ) vehicle was taken to dealership. Dealership reported that the problem was in the shift mechanism. Dealership replaced the entire shifter assembly and jumper harness, n-harness and n-control. Bill for repair was $572. 26 . Dealership did not cover the repair under warrantee. Dealership also communicated that repair had no existing recall notification and could not be compensated by manufacturer recall.