Alot of times on my 2004 chevy cavalier when you press the gas it hessitates severely and someimes it will die but it will start right back up.. the ICM has been replaced already and no codes show up

SOURCE: 2004 chevy cavalier makes a ''knocking'' sound

This could be any number of things. It could be your CV axle going bad, your tie rod joint has gone bad, your lower ball joint has gone bad. More than likely it will be your CV axle. What you need to look for is rips on any of the boots for these parts. The one that has the rip will more than likely be your problem. Just check for grease coming out of any of these parts and you will find your culprit because it has dried up and is causing the knocking sound. Let me know if you have any further questions. Thanks for using FixYa!

SOURCE: Diagram of Serpentine Belt 1998 Chevy Cavalier

diagram should be on the radiator shroud / top of radiator

SOURCE: Received P0455 Evap System Large Leak Detected - 2004 Cavalier

your problem is probably a vacuum hose that goes from the purge valve to the gas tank (crack or broken hose). There should be two of these check both. A broken vacuum line will make the purge valve make a clicking noise that can be mistaken for noisy engine valves.