I have a 2003 Chevy S10 V6. Yesterday, out of nowhere, the temp gage went up to the red. I pulled over and shut it off... had a look under the hood and saw antifreeze bubbling out of the manifold near the bolts...

I added antifreeze to the radiator and water to the reserve and after that it ran cool.

Any thoughts?

 

sounds like intake gaskets are leaking between port and mounting bolt. I would check for more seepage, and water level over next few days.

 

keep checking your oil and coolant, sounds like intake gasket. 1 or 2 day job if its a first time for you. would suggest not running the car until the gasket is fixed as you could do more damage.

 

Just did mine over 4of July weekend great write up on handymanlyness.com make sure you use the flo pro meatle gaskets.and remember have fun