I have an 04 cts with 209k miles. I have been dealing with so many issues. I have this one problem left. I have replaced all cam sensors and crank senors, all injectors, all spark plugs, all coil packs, the ecm, maf, tps, air manifold gasket. The list goes on. Im at a loss as to what to do. Im sure im in it more than its worth at this point but i would like to fix the problem. Thanks in advance. I have been dealing with it since about nov of last year.