Check coolant level
I'm pretty sure it's the head gasket, maybe before it was over heater.
Needs to be readjusted.
I have a 2001 chevy venture and I never had any probs. Only thing is the electrical goes out about 180,000 miles
5w30
134A freon
it goes on/in the top of the gas tank
The vacuum line diagram for a 1997 Chevy Venture 3.4 engine outline where each line goes and what it connects to. It can be found within the service manual.
The Venture Bros- - 2003 What Goes Down Must Come Up 3-7 was released on: USA: 13 July 2008
Up. Heat goes up.
what goes up, goes down!
Not sure how old this posting is but the problem could be the lower intake gasket. I just had mine replaced. If its not under warranty the dealer said it would cost $800.
On the engine end of the upper rad hose. When replacing it make sute the spring goes toward the engine.
On my 97 it is in side the backdoor just under where it goes through the glass.