One problem related to engine rattling and whining sounds has been reported for the 2015 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Jeep Grand Cherokee based on all problems reported for the 2015 Grand Cherokee.
I was driving down the road, with my foot steady on the gas, and the transmission shifted hard (8 speed automatic) and lunged my car forward without any pressure on the gas pedal. Then it continued to shift hard and lunge until I reached and maintained 40 mph ( in which my Jeep put the transmission into 8th gear at a steady 1000 rpm). This has happened multiple times since, and sometimes when I remote start the Jeep, it will give off a very loud high pitched whining sound for about a minute, then stops.