Head gasget,get it sorted ASAP. Do not drive it.
It's burning coolant.
I had to change the drivers side valve cover because it has the pcv valve built inside the valve cover. Original part has small round hole in bottom, new design has larger square hole. I watched video on you tube and changed it on my 2008 5.3 L suburban, took 30 minutes part cost me $75 no more smoke... way less oil consumption... HOW TO REPLACE GM 5 3 VALVE COVER
Only two reasons for this first is its below 0 outside the next is blown head gasket. Now thats WHITE smoke.ONLY.If it smells sweet like anti freeze that confirms head problem. black smoke is fuel, blue smoke is oil. sorry hope this helps TIM
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