Where is the PCV valve located on a jeep liberty Is it easy to change If a dealership asks 45 to change is that too steep?

Not sure where PCV valve is on Jeep Liberty, but it is usually located on the valve cover. It is recongizable by the hose that connects to it. Most PCV valves just slide out when pulled and are replaced the same way. PCV valves are not expensive and esasy to replace. Dealership probably asking $45 for parts + labor. Cheaper if you do it yourself.

The PVC valve is located on the side of the oil filler cap (where you add oil). Just pull the rubber hose off the back of it and turn it counter-clockwise to the six o'clock poition. Pull it out. They seem to get sticky even though you change your oil on time. Spray it out with carburetor cleaner and shake it out. The steel ball in there should move back and forth as free from grim as possible.