Question about 1999 GMC Sierra

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Radiator I have a 1999 GMC Sierra Pickup. For the past 4days every time I shut of the engine, there's this leak around the upper fitting, under the radiator hose on the driver's side . At the base of where the fitting goes into, it leaks a reddish, brownish oily liquid....Can that star looking piece be tightened or does it need welding...or...Does the radiator need to be flushed?

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  • bobwat13w Sep 24, 2008

    Thanks, I'll try that this weekend.....Bob



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Check the "tightness" of the fitting. if i remember right its a flanged fitting. or a oring type. just remove it and check for the type......jimmy

Posted on Sep 24, 2008


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