Quote Originally Posted by jlinde View Post
I will check the mentioned hoses and tubes -the changing of intake gaskets sounds like a very good idea as there is a slight
smell of antifreeze now and then. I changed head and intake gaskets on my doughters 3.4 liter Montana and on our 94 Pontiac
Trans Sport but for the 97 3800 Grand Prix there are 2 different types according to Rockauto so maybe I have to buy both types
or wait until the intake is off. /Thanks, Jan L
My 97 has the ones will the dowel alignment pins but some 97's dont have this. These dowel pins help prevent the gaskets from slipping when installing the manifold. It's up to you, but make sure you buy the aluminum AC delco intake manifold gaskets. The quality of these gaskets are so much better. My 97 gtp I purchased with 34k miles in 2004 or so and the stock gaskets were cracked horribly. Make sure the gasket area is nice and clean before installing new gaskets, also don't forget you MUST apply a gasket maker (I use GM assembly adhesive) to the bottom corners where bottom gasket ends meet. If you don't do this, you WILL DEVELOPE a vacuum leak.