hey boys mine has the same problem and had a cat replacement done 1 month ago. Chugging still happens. I tried the disconnect battery tick for at least 5 hrs (I leave it overnight and that cures it for about 1week and a half then the chugging rado0mly appears). I read 04 and 05 have this problem with no know cure so was wondering if an 06 or up pcm swap would fix it. Keep up the feed back cause im sure 1 of us will come up with the fix. too bad cause this is pissing me off to the point of trading the car in for an import
