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View Full Version : should a duramax blow white smoke when its cold?



kawikid1425
12-23-2008, 21:45
hello got a new lb7 dmax, just started getting cold here and noticed when it is cold out it blows some white smoke out the exhaust until it warms up a little. is this normal? just wondering. only does it like when you pull out off the driveway and go down the road it will smoke for maybe a 1/8 mile.

trailrider0493
12-24-2008, 08:45
Mine does the same thing when I first take it out of the garage.

Mark Rinker
12-24-2008, 08:56
Normal when cold.