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

I've seen other reviewers here say it can be removed instantly without a key. I tell them you need to install it properly. It must be pressed in as far as it will go so that there is no gap between the cover and the base plate on the bracket. If properly installed, it CANNOT be removed without unlocking it. Excellent for preventing water, dust and gravel from entering the fuel filler neck. Very happy with this mounting cap!