re: GMC Yukon - Fuel Pump Shuts off Constantly While Filling Tank (SOLVED: update pg 2)

It's the canister Or the hose that leaves the canister.

You can find the hose and un hook it from the canister and use air compressor to blow through it.

Put back together and see if that works. Most of the time that works with a truck as the bed gets dirty as shite and can clog the hose under it.

Being a Yukon might not get as dusty.

If hose clear doesn't work replace the canister.