It is on the driver side engine valve cover. Its a small part, There is a short L shaped (right angle) hose about 1/4 inch in diameter connected to it. Lift up on the hose and it should disconnect from the valve cover. the small metal cylinder should pull right off that hose. Thats your PCV valve.
Note: there is a similar hole on the opposite valve cover, but that has a larger hose that connects to the intake. You can use this as a reference to find the PCV valve on the driver side.
heater control valve located on 2001 gmc jimmy 4.3l
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.
The air door actuator on a 1998 GMC Jimmy is located in the dash. It is located behind the glove box.
It is located on the inside of the frame under the driver's door
Inside the Driver's Side Fender
where is the oil pump on a 1998 gmc jimmy in the oil pan.
the canister vent valve is located behind the spare tire you will have to take the spare tire so you can see it
The pump is in the gas tank. Not a fun job to remove.
Each tire has a Schroeder valve. Also the Air conditioning system has a schroeder valve to fill it. It is located on the passenger side of the engine compartment on one of the a/c hoses.
where is my voltage regulator located on my 1997 gmc jimmy
In the fuse/relay center under the hood.
gmc jimmy rear reservoir location