i was reading some stuff about changing the pcw valve. the ideling on my 2008 suburban is sometimes not steady, do i have to change it or is there already a updated one in there? i am going to get the tranni and oil serviced and i was going to get new spark plugs as well, was just wondering if this should be changed too?

 

PCW? Do you mean PCV = Positive Crankcase Ventilation valve... the PCV is a serviceable item...

 

i jus changed my PCV valve its 6 bucks at autozone and its right infront of u on the top part of the driver side engine, 30 seconds to do, hope that helps

 

Thanks for the reply, I will do that too,is it under the big plastic cover on the drivers side back or front?