I just did the seafoam treatment. You can find this product in your local parts (auotzone) type store. Just before you take your ride to the shop for an oil change add about a quarter can to your oil (pour directly into the opening where you add oil). Next drive to the shop and have your oil changed, don't wait a day or anything. You only need to drive about 2-3 miles to get some good results. On your PCV valve it is located in the valve covers on the drivers side of your engine. It will have a hose coming off of it and going to the center/front part of your intake on top of the motor. It is a small plastic 'L' shaped part and just pulls out and pushes back in to replace. I just replaced it on my 99 Rodeo. The part was $2-3.00 and is not even made with $66 dollars of plastic, YOU can do this yourself <img src="/forums/images/graemlins/smile.gif" alt="" />

Good Luck!

Tim B.
99 Rodeo