multiple codes only when slick or snowing
so this winter is my first winter with my envoy 06 slt black on black, anyhow the last couple times it has snowed (basically last couple weeks) my check engine light has come on but shuts off after a day. Well today i finally caught it on and in time to get into advanced.
Now when light comes on it in 2wd with stabilitrac and traction control all on.. also at times when i park even if light is not on the idle becomes rough, but if i shut it off and turn back on it becomes normal again...?! Here is the list see what we can get figured out and possible solutions:
think i need to clean out some sensors and throttle body and that should take care of most of them but not sure... let me know thanks