Owners/service Manual problems of the 2009 Dodge Caliber

In June of 2013 while driving down I-75 heading up north, my temp light came on, the temp gage never moved past the normal range (directly between cold and hot) after I noticed the light I was watching the temp gage and my car just shut down. I lost all power, speed, steering, everything. Thankfully I was already in the right hand lane and I was close to an exit so that I could exit the highway. I called the dealership where I got the car and they had no idea what happened. After sitting for an hour I was able to drive back downstate. I got the car April 1 2013. In December of 2013 the lightning bolt popped up on my dash, I have no clue what that means since my car did not come with an owners manual when I got it used. The rpms jerked up to 4, then dropped back down. This happened roughly 10 times over the past year. In August of 2014 the car began to jerk like it was having a hard time getting into gear. At first it only happened at stop signs and red lights, then it began to do it while I drove. Anywhere between 10 to 60 mph. Normally it would only do it a couple a times and then it began doing it every time the car was running. I took it to the local Dodge dealership, they checked it on the computer and even test drove it, according to them it didn't do anything while they were driving it and since the check engine light doesn't come it the computers didn't pick up any issues. Also have a hard time getting the key out of the ignition after I shut off the car.