For a 2007 Suburban: The Evap Vent Valve is above the spare tire. The vent is factory Zip Tied to the filler tube up to the filler hole, ie: afterthought IMHO. The old vent looks like a cap on the hose, the 'certified' replacement is foam filled to prevent dirt from getting in I guess. There was/is much dirt up around the filler neck inside the fender so that a good thing.
The replacement 214-2082 kit includes a different Valve than OE. It has barbed 5/8" ends inlet and outlet. Although there is no other difference. The OE was barbed on inlet only. There was a connector for the vent side. I coulda made it work... but ... get 4' of 5/8 heater hose and be done with it.
Easy repair, had to clear the code myself with my brand new OBDII zapper and the remote start worked X4 attempts. I believe it is fixed. Total cost $82. Total time less research, 30 minutes.
Thanks to all on the forum!