so your "Trac Off" light is on? is you ABS light on also? could be a speed sensoron one of the wheels! There is a right up about it somewhere here, search "ABS and Trac Light"
Also , the crank sensor will give a code if it's that.
your coil pack could be getting weak also.
I've been working on mine for a while and Cylinder 6 misfire, Random misfire, replaced crank sensor when that code came up and then replaced the cam sensor when that came up. Ran Seafoam and a full tank of high test, moved injectors around, moved injector wires around and still have the same misfires and sputtering/backfire. COIL gets replaced tommarrow!! Advance has a cheap on w/ 90 day warranty for $20.00. You don't know which one is bad so you might want three, it's up to you good luck!!!!!