PCV Valve. Tube Assembly - PCV.
Incl.PCV Hose. PCV Valve.
PCV Valve
Fits Envoy XL, Envoy XUV, Express 1500, Express 2500, Express 3500, Rainier, Savana 1500, Savana 2500, Savana 3500, Trailblazer EXT
Express, Savana; 4.8L, 5.3L, 6.0L.
PCV Valve - Repair or Replace
If your PCV system is malfunctioning, you may notice any of several symptoms: if your tailpipe smokes or your engine idle speed is high or erratic, the PCV valve or its associated parts may need service. You may also notice that the dipstick in your won't stay in the dipstick tube, or that your oil cap hisses as the engine is running.