Through a gasket to inside the engine, through a gasket to outside the
engine, through a crack to somewhere else, bad radiator cap, cracked coolant
Pull the plugs and look for fouling, look around on the block and manifold
for boiled coolant residue.
Could be simple and cheap like a radiator cap, ..........or not.
Should be under warranty anyhow.
Don, I had the same thing happen to my 99 Silverado. I checked the
tank and it really was not that low... I added a small amount of the
coolent mixture anyway, problem went away?? They told me it could be a
bad sensor? B.G.
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