mastermonkhabib
01-28-2006, 07:40 PM
Can anyone tell me where the PCV valve is located on the 4.2 liter engine (2002 Envoy). I have a Chilton manual, but it does not say anything about a PCV valve.
Thanks,
Donnie
lt2000
01-28-2006, 08:02 PM
the vin# S engine does not have a PCV.
gary
tblazed
01-29-2006, 09:35 AM
Actually it does have Positive Crankcase Ventillation, just no valve. It has a PCV tube which provides a passage between the crankcase and the intake manifold. Not a maintenance item to be concerned about, unless the tube gets clogged up!
ScarabEpic22
01-29-2006, 06:05 PM
Yep, tblazed is right, no PCV valve on the I6 engines, dont know about the V8s though.