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 without 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
https://parts-catalog.acdelco.com/acesCat.php?glsId=aces
[ame]Amazon.com: ACDelco 214-2147 OE Service Vapor Canister Purge Valve : Automotive
The time needed : 1-2 hrs ( took me 35 minutes)
Tools needed:
lug wrench
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.
step 1: Jack car up and take rear passenger side wheel off.
step 2: 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)
step 3: Locate solenoid and disconnect electrical wire by lifting the tab and pulling down
step 4: Hold solenoid firmly and pull towards yourself to slide it off the bracket.
step 5: 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
Step 6: maneuver the solenoid out of the car (should come out where you took the filler neck hoses off)
Step 7: 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.
Technical chat.
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 until 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 any questions feel free to message me.
*links edited
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
https://parts-catalog.acdelco.com/acesCat.php?glsId=aces
[ame]Amazon.com: ACDelco 214-2147 OE Service Vapor Canister Purge Valve : Automotive
The time needed : 1-2 hrs ( took me 35 minutes)
Tools needed:
lug wrench
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.
step 1: Jack car up and take rear passenger side wheel off.
step 2: 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)
step 3: Locate solenoid and disconnect electrical wire by lifting the tab and pulling down
step 4: Hold solenoid firmly and pull towards yourself to slide it off the bracket.
step 5: 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
Step 6: maneuver the solenoid out of the car (should come out where you took the filler neck hoses off)
Step 7: 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.


Technical chat.
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 until 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 any questions feel free to message me.
*links edited