It was the engine block heater, or coolant heater. For whatever reason, it cracked or something and failed. They're probably going to put a regular freeze plug in it. Does this happen often with these heaters?

 

old dexcool can destroy some parts, flush it every 30,000 or 2 years or so.

 

Well, it'll have fresh antifreeze now! LOL I'll definitely switch it every 2 years if not sooner. Who knows if it was the original Dex-Cool, but it was dealer serviced at least semi-regularly. It has that white gunk the GM dealers around here seem to like to use on door and hood hinges.

 

The dexcool had white gunk?

 

The "white gunk" they use on the hinges is white lithium... if that is in your antifreeze, you have a bigger problem than you think.

 

Or you got the dexcool milkshake which is what happens when the coolant system is exposed to air or an incompatible (green) antifreeze.

 

Man, when that happened to me, I got mud. I thought that's what happened when it got in the oil.

Also, just made a new sig from my phone. What do you guys think?

 

I like it man !!

 

doin pretty good mike. not so sure about the monte right now, and working the graveyard shift is starting to get old, haha, but at least i have some extra $ for once to put towards the monte's woes your car's lookin good man. i havent really gotten to check out any pics you posted, but looks sweet in the sig pic

i think the white lithium grease is on his car's hinges. although that coulda been put there by a PO too.... who knows if it was the dealer.

guess that explains why i had mud in the overflow tank when i bought the car. probibly why my intake gaskets are coming apart fast...

and the sig looks good!

 

No, no. Just on door, hood hinges, etc. That did sound misleading. LOL
And sure, previous owners could have used it, but I just remember the Chevy dealer where I bought my last Chevy brand new used it on all the cars they serviced.
Damn, that was expensive. $102.70. I haven't seen the details of the bill yet. I guess it was worth it, I would have had to have a rollback bring the car home and then fix it myself.