How do i change a PCV valve on a 2004 Kia Sorento 6 cylinder 3.5L eng. rear wheel drive?

SOURCE: where is the pcv valve on 2003 Kia sorento

If it is not near the rocker cover, then follow the hoses from the charcoal canster to the head cylinder.

SOURCE: reset check engine light in a 2004 Kia Sorento

usually you can reset a check engine light buy disconnecting the battery for about 30 minutes.

SOURCE: How difficult is it to change the PCV valve. 2004

PCV is an acronym for positive crankcase ventilation.
The PCV Valve is a very common replacement item on many engines today. It's called the PCV valve for short but it stands for Positive Crankcase Ventilation. When your engine spins it many times collects pressure in the crankcase area, and it has to escape to relieve pressure on the motors bearings and seals. The PCV valve and PCV system is typically located near the intake manifold, and many times comes right off of the valve cover. It is very simple to replace the PCV valve, and you can do so by simply unscrewing it, and screwing in the new valve. We recommend using a little bit of teflon tape or paste to make sure you do not get any oil leaks.
Example (see picture below): 2,4 ltr. Audi V6 engine (BDV, AMM)
It's not difficult to replace PCV valve!

SOURCE: 2004 kia sorento cannot get rear brake rotor off.

make sure parking brake is off
take off caliper
pemove rotor
if the park brake shoes inside rotor are tight then you have to loosen the adjuster to remove
theres a hole in the rotor rotate it up and look through hole until you see the adjuster wheel loosen by rotating adjuster with flat blade screw driver

SOURCE: does the kia sorento 2.5 crdi xe have a timing on a 2004 plate

THE KIA SORENTO HAS 3.3 AND 3.8 ENGINES THEY HAVE TIMING CHAINS.THE KIA 2.4 ENGINES HAS TIMING BELT GUIDE PLATE.