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  1. #1

    Default '08 Silverado, smoke upon start up

    Hey guys,
    I noticed today that upon start up, I saw 3-4 seconds of white smoke.
    What could cause this?
    KCCO!

  2. #2

    Default

    If it was a cold morning, it's just condensation.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3
    Legend

    Join Date
    Sep 2010
    Location
    everett, massachusetts
    Posts
    1,464

    Default

    on a cold start you will see water vapor , and even see water draining out the mufflers. if the engine is hot and you see white vapor that would be coolant. also it will have a smell to it.

  4. #4
    Sr. Apprentice Kuntryboy's Avatar
    Join Date
    Jan 2011
    Location
    South Carolina
    Posts
    30

    Default

    if the smoke was blueish then its probably a leak of some sort.
    2010 Crew Cab Z71 4x4--Daystar Leveling kit--275/70/18 BFG AT's--Tonneau cover--75,000 miles--
    To Do: Iron Cross Winch Bumper--Winch

  5. #5

    Default

    Kuntryboy,
    It did have a blueish hue. It was definitely something being burned off.
    where would the leak be coming from?

  6. #6

    Default

    If the engine is cold, there is no exhaust heat to burn off any fluid.
    If the engine is hot, it is probably engine oil.

  7. #7

    Default

    Ok, so let me put this all together.
    I know it's engine oil because I'm always down 2 quarts within a span of 5,000km.
    Yes, this issue is happening at cold starts. This morning I stood behind it, used the remote start and thick, white, blueish smoke came out for 2-3 seconds, then exhaust vapours.

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