2003 Montana CEL E-Vap code

[Steelcity]

Well the service engine soon light came on a few days ago and too it to my buddy and it read "e-vap" which he said could be loose/bad gas cap ,rusted filler neck or anything to do with the pressurization of the system . He then took of the cap and the sealing gasket was cracked ,so this is what I will try first . $24.78 at rock auto.
He did reset the light and it did stay off but that was only 3 miles.

 

[melsg5]

Well if it comes back the next thing would be a smoke test to find a leak.

 

[Steelcity]

Well put on new ac delco cap and CEL still off knock on wood