i keep getting this message. it started about 3 days ago and everyday since then it just randomly comes on. i get out and check it and its still tight. um...



****EDIT****

bad purge valve for the evap system

 

Vacuum leak?

 

car runs fine

 

no evap leak is what that causes not vacuum, has it thrown a code yet? if so what code?

 

no codes, just a *ding ding* check gas cap

 

the only real reason you have to make sure its tight is because the evap system detects it as a evap leak and genrealy throws code but being that these are "newer" cars maybe it can tell the differnce between a acual leak in the system and an open gas cap?

 

if its tight and still does it it needs a new gas cap. if your under warrenty take it to the dealer, they will replace it for you

 

where is the evap and how do i check it?

 

All over the car, its the system that pressurizes the fuel tank to check for fuel vapor leaks.

As posted above, most likely a bad gas cap. If that doesn't fix it, there is a leak in the lines somewhere. Have the dealer fix it, should be covered under 8/80 federal emissions warranty.

 

sweet alright thanks guys

 

same thing happened to me..it was under warranty and i took it to the dealer 2 times..they did a smoke test to check for leaks..nothing the first time and finally it leaked the 2nd time and they replaced it for free

 

Bumping a thread here, i'm having the same thing happen to me on my 07 ss/sc. No codes just the gas cap message comes on every once in a while. OP, did you take it to the dealer yet? Do they need to see the message before they replace the gas cap?

 

im going tomorrow i have been busy. but i have an appointment set. i just got a check engine light and its saying large Evap leak now. so there going to fix that too

 

was a bad purge valve and yes its covered under warranty