Anyone else have this issue? How did it get resolved? If I unplug my battery cable, my CEL stays off for a couple weeks then pops back on. Also, could anyone tell me/post a pic of where the evap can is located? I am going to blow it out and see if that helps. My buddy had the same issue in his Silverado and he did that and the light never came back on. Thanks!!!
How would I go about testing this out? Fuel cap being the metal flap or the rubber boot on the door? Thanks!!
https://www.fixdapp.com/blog/p0456 The cap is just a rubber stem, can remove and do a leak test with water, probably not expensive to replace for starters. The link above has good information on the typical evap system, take a look.
Thanks man! The charcoal canister is located in the rear right wheel well, correct? Looks like I can get a smoke tester on amazon if the gas cap isnt the issue.