jBell89

Hello is anyone else having issues with their Tahoe’s overflowing when filling up the tank? I’ve filled up 4 times now and as soon as the pump clicks off there’s a purge bubble that makes a significant amount of gas leak out and run down the side.

oilcanhenry

This is simple, or at least I know why your Chevy is doing this. Your fuel tank is not venting properly. Thus the pressure has to go somewhere, and that is out of your fill-up inlet when you pull the nozzle out. Likely you have an issue with you EVAP system, so it will not vent properly..

Rednucleus

sounds like dealer warranty time

oilcanhenry

I agree. Forget to see it was a 2021 model.

tech2

yep...let the dealer fix it. they probably has service bulletins addressing the issue.