04 Silverado Cooling System Question
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04 Silverado Cooling System Question

  1. #1
    Senior Member GottaJet's Avatar
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    Default 04 Silverado Cooling System Question

    Hey Guys, I have a quick question about my 04 Silverado 5.3
    I want to drain my radiator and according to the Haynes manual there is a drain valve on the lower left of the radiator and even a nifty little hose to direct what your draining into a container. Well wouldn't you know it mine has a couple of barbs where the manual shows the valve but No valve and it has the little holders for the hose but no hose. Is this some kind of California anti pollution deal or what?. Am I going to have to pull the block plugs to drain this thing? Any help you
    Can provide will be greatly appreciated
    Shhh!! Can you hear that?? GJ

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  3. #2
    New here Beer:30's Avatar
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    Just pull the lower hose. Messy, but that's about all you can do on newer ones.

    Make sure you're parked over a storm drain.
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  4. #3
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    look for something like this:



    they're usually located on the passenger side rear of the radiator. if you loosen it and you dont get water gushing out, take a small screwdriver and poke around in the hole. a lot of times theres a crust formed that blocks the drain and a little poke breaks it loose.

    if you cant find ANYTHING... lower radiator hose removal like mentioned above works too.

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  6. #4
    Senior Member GottaJet's Avatar
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    Quote Originally Posted by Beer:30 View Post
    Just pull the lower hose. Messy, but that's about all you can do on newer ones.

    Make sure you're parked over a storm drain.
    Lol!! Thanks guys
    Shhh!! Can you hear that?? GJ

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