P 0456 Jeep wrangler evap code

I kept getting a P 0456 evap code on my 2013 Rubicon. It's a small evap leak code. Most times, it's the gas cap. Another usual suspect and a good place to check is the purge vent valve under the hood near the battery. There are videos on YouTube on how to go about checking that.
If you pull the tube at start up, there should be no vacuum, and once it warms up in 5 to 10 minutes, there should be a vacuum then. I checked this after replacing the gas cap a couple of times and still having the pesky light.
So after confirming that the purge vent valve was working, I then replaced the evap system integrity module on the evap cannister. I reset my light, and it has been a good solid month with heavy driving, and my engine light has not come back on. My repair was a success this time.