[BlazerLT]

Bosch Platinum's are absolute crap in a 4.3L and will cause more problems than anything.

AC Delco Platinums are proven to perform the best.

The PCV valve will be in the driver's side valve cover and does need to be replaced. It will affect the idle plus if it is not working properly your oil will not be kept clean for long.

Also paulson, thanks for the attitude there, I posted a list of things you should do. You can check the ones you have done off and do the ones remaining. There is no reason for you snarky reply. I am trying to help so stop acting like a child with ADD.