Traction control stabilitrak troubles

My car's traction control light came on and said service traction control and service stabilitrak and also traction control is off and stabilitrak is off and the check engine light came on once it came on the motor started running rough and when traction control light and engine light are on at the same time the suburban changes gears hard but if just the engine light is on it changes smooth can you help it is giving a code #7 cylinder misfire