The PCV valve on a 99 GMC Yukon is found in the left valve cover. It allows trapped gases inside the engine to be recirculated and reused.
i am having truble finding the pcv valve on my 2002 Denal 6.0 eng. this is the Yukon XL thank you Jim t. jet3970@AOL.com
If I'm not mistaken, it does not have a pcv valve, my 2000 doesn't have one on it...
The PCV valve on a 1999 GMC Jimmy is located on top of the engine, on the left side. It connects the valve cover to the intake manifold.
for the 1997 4x4 4 door gmc yukon, GM uses the 6lug on 5.5in
Where id the AC expancion valve located in a 202 gmc yukon with rear air
most likely on the left valve cover
On the engine valve cover on driver side.
wiring diagram of a/c system for 1997 gmc yukon
PCV valve on top of the valve cover towards the end of the cover. Will have a 90 degree black rubber boot on it.
I anwered this question Look at post ... "Where is Expansion valve located on 2003 Yukon Denali XL"
remove the old pcv valve by pulling it straight out of the valve cover, pull the hose off the other end. Installation is the reverse of removal.