Okay, after recently buying my car my CEL came on(P0449), sadly it turned out to be the Evap vent solenoid. Turns out that tons of other GM vehicles have this problem. I took the car to the dealer and was slammed with an estimate of $1000 to replace the vent solenoid. (I ended up taking the car back and paying the diagnostic fee
) After looking on the forums I found that some other members had this issue and could be resolved with out dropping the tank.
The part cost $15.00 shipped on Amazon. P/N :214-2147
(this part number worked for my 08 GT) 2009 G8's might have a different part number.
Links to various sites
http://www.amazon.com/ACDelco-214-2147-Service-Vapor-Canister/dp/B0031IBSDG/ref=sr_1_1?ie=UTF8&qid=1382406665&sr=8-1&keywords=214-2147Time needed : 1-2 hrs ( took me 35 minutes)
Jack and Jack stand
long Needle noise pliers
Flat head screw driver
Doing it this way requires you to work by feel since its in a weird spot. The pictures I took should give you a visual of what you are looking at.
Jack car up and take rear passenger side wheel off.
Locate the 2 hoses from the gas tank filler neck and disconnect
them. ( The plastic hose will have has two tabs that need to be squeezed in and pulled to take it out(see pictures)
Locate solenoid and disconnect electrical wire by lifting the tab and pulling down
: Hold solenoid firmly and pull towards yourself to slide it off the bracket.
: Using the long needle noise squeeze the hose clamp off the vent hose and pull off the solenoid. At this point the solenoid should be freed
: maneuver the solenoid out of the car (should come out where you took the filler neck hoses off)
: Reinstall in reverse order( I used a hose clamp on the vent hose for easier installation) A little bit of oil on the hose will help the install go smother.
After taking out the defective solenoid I checked the Ohms and it was reading 10.9 ohms, The new one however was reading 22.0 ohms.
Also Your Check engine light might not come off untill 3 Cold start cycles (on star says up to one week), I happen to have a Scanner that I can clear codes with.
Hope this helps someone and questions feel free to message me.