Review on 🔒 ACDelco GM Original Equipment GT376 Fuel Tank Filler Locking Cap - Secure Your Fuel with Black Cap by Johnathan Delic

I wanted something as a deterrent and more or less just something to keep water/dirt out. Entrance to the gas tank. The flap over the opening is by design to keep things out, but when you stick the fuel pump injector nozzle into the inlet, the flap opens and some water enters the tank. (No big deal.) This lid prevents this and also serves as a deterrent to vandals etc as it appears to be locked. I said appears because I can take it off even if it seems blocked. So I gave it a 4. To be honest, Chevrolet says it's a "capless gas station" and that cap shouldn't even fit. The 2019 Silverado LD shouldn't even have a lid. Locking and unlocking is a little tricky as there isn't much room in the hole for the key and your fingers. Also, the key will not come out of the cap unless it is in the closed position. It works for me, but as I said, the truck is designed without a hubcap.