My 02 malibu is idleing too hight how do i fix the problem. brian

Check your idle air control valve(IAC), it should be along your throttle body. Try disconnecting the wire harness to the IAC and see if there is a difference to the engines idle. If there is no change it may be dirty with carbon build up and seized, it needs to be cleaned with throttle body cleaner or it may need to be replaced. Good luck and hope this helps. After cleaning or replacing the IAC you need to reset the base line for it's idle, Turn the ignition to the run position for 30 sec and then turn the key to the off position for 10 sec then start the ending and let idle for 1 min then go for a test drive. Good luck and hope this helps.