onder the hood of the car, right near the release velve
It is top center on the rear valve cover.
Yes, it is on the center of the rear valve cover.
It should be on the top of the valve cover connecting the engine and the injector.
Drivers side valve cover towards the firewall.
Pull upward on the hose that the PCV valve is in. The PCV valve will pull out of the hose. The PCV valve is located in the valve cover.
Disconnect the PCV valve tube from the PCV valve.Disconnect the PCV valve electrical connector if it has one.Turn the PCV valve counterclockwise to remove from the valve cover.To install, reverse the removal procedure.
Remove the PCV valve retaining screws. Remove the PCV valve hose. Reverse the process to install the new PCV valve.
I was told on 2008 avalanche, should be same on 2007 (not sure) to replace the whole left side valve cover. The PCV is build in in cover ?
The PCV valve has a check ball in it, That's what you are hearing. REPLACE PCV VALVE
The PCV valve is located in the valve cover
The pcv valve is on the passenger side valve cover