my 00 limited is inconsistently shooting small plumes of white smoke from the exhaust. terrified at first that i had blown (or was in the process of blowing) a head gasket...

checked the coolant- no leaks. temp gauge is normal, and there is nothing leaking underneath on the ground.

yesterday the AC started knocking when i turned it on, could it be the door or the compressor causing the moisture (to create the smoke?)