2010 Silverado white smoke on startup

L with 120miles on it. I have never had one issue with it, not warning lights or anything. Maintenance has been up to date. After that, the exhaust is fine. When I stopped to get gas I cranked the truck and it poured out white smoke from the tailpipe, oil pressure droppe and when I checked it there was no oil touching the dipstick.

Put qts in it and let it run and it blew smoke out again as soon as I cranked it but no drop in oil level. On them, the seals would break down from the heat cycles over the years and start leaking. Ive noticed that if the vehicle sits overnight, or for a few hours, I get a cloud of bluish white smoke out of the exhaust for about seconds, then it goes away. I mean rite at startup.

GMC Chevy Tahoe Yukon SOLVED! Building a 3Stroker Crate Short Block for a Chevy Silverado - Truck Tech. I have read this is a pretty common issue among the 5. Any insisght into this issue woudl be great. Smelled of oil and definately came from within.

Truck had been sitting for hrs and was stone cold. Smoke was immediate and slowly died out, which is why I suspect pooling somewhere, cylinder, intake or ? Only clue to a prob was visual. Moved to golf cart community and for last year averaged 175.

I now drive highway and city. Car in garage when not in use. Is it because I gutted both catalytic converters? L Silverado with 190miles and have been experiencing white smoke at start up since 100k.

It has not been consistent but usually happens in the morning. The white smoke has also been observed during the day but rare. But it is always a good idea to keep an eye on your oil and coolant levels on any car, smoke or no smoke.

White smoke on start up in the morning for a few seconds is normal and harmless. Even in a hot and humid climate, there will be some condensation in the exhaust system overnight. If you own a GM truck or other vehicle with a 5. L smoking on startup , you should read this. When starting the vehicle after it has sat for a while you’ll get some bluish white smoke from the exhaust. You’re burning oil, but relax.

It’s most likely oil that has seeped into the vacuum hose through the PCV valve. Important Smoke on start up. Took it to the dealer again and they found out there is a NEW designed PCV out specifically because of this issue.