Question about 2000 GMC Sonoma Extended Cab

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Water coming out of muffler when trying to crank 2000 GMC Sonoma

First, there was a crack in the radiator. Radiator ran dry & truck began making a tapping sound. Then the truck started running out of power & finally stopped altogether. We fixed the radiator crack & filled it with water to test it out. We then noticed water leaking out of the muffler. Possible blown head gasket or crack in the engine block? Help! This truck is our only mode of transportation!

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It could just be condensation - you hope..
However - sinse it got so hot - it could very well be a bad head gaskit or even worse a cracked head..
Never drive a overheating vehickle..
Always shut it off..
My wife has cracked 2 heads this way..

Good luck !!

Posted on Jul 22, 2009


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It sounds like you have a blown head gasket or cracked cylinder head. These are usually caused from the engine over heating. if the leak is that server a quick check would be to fill the radiator with water and leave the cap off, then crank the engine over if the water comes squirting out from the radiator its a good to say its in the head gasket or cylinder head. Good luck

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