My 2005 Magnum sxt (3

My 2005 Magnum sxt (3.5L) has intermittent warning lights. One looks like a lightning bolt between two reversed parentheses and the other is the bas light. First, the bas light will come on and then (while stopped at a light) the car will start erratically idling (high and low), and lurching (like its going to take off and hit the car in front of me) and shimmying/shuttering (like its going to stall), and the "lightening bolt" light will illuminate. Also, when accelerate the car seems to "buck" into the next gear. Sometimes these things go away and everything goes back to normal.