figured i would toss out my issues ,,,1) i have bank 1 and 2 lean codes think only thing recent was a passenger side oxygen sensor ,,,, looked at tech bulletins on alldata found 1 for replacing the lower intake gasket ,,,2) i have a evap purge flow faulted code ,,,i did find a small section of evap metal line rotted//seperated and have since replaced that section with vaccum hose ,,,finally my last issue is when the engine is cold and outside is very cold the truck sometimes stalls at red light idles ,,,, i am sure i might need more descriptive info on these subjects but figured i would see if other members had issues like these thanks for your time