ACDelco GM OE GT264 Locking Quarter Turn Fuel Tank Cap - Includes 2 Keys, Black Review

Works great. . . I wish he had some kind of Lariet. By the way, I have a 2005 GMC Yukon XL Flex Fuel. There were no warning lights like one of the Suburban XL Flex owners had. (The Flex Yukon and Suburban are basically the same cars...different back doors).

Revain incorrectly lists GT264 as the correct gas cap for a 2005 Suburban 1500 Flex-Fuel. Odometer display every morning when you turn on the truck. The correct Acdelco fuel cap is 12F40L, except that there is a second gasket in the cap.

This is the closest thing to a gas valve with a factory shut off (bought on a 2004 Chevy Silverado LT). It works perfectly, and since my truck is parked in my driveway instead of in the garage, I have peace of mind. Be sure to look at how the gas cap threads are arranged before purchasing this one as I looked at another cap before I got it right. Mine is unthreaded. I highly recommend this product.

UPDATE: A few months later I got the "Tighten fuel cap" message on the dash. I have a 5.3 petrol engine. It worked great on my 2004 GMC Yukon XL SLT. Cap 1/4 turn. I've had it for a few months now and have had NO check engine lights. The only downside is that I couldn't transfer my stock gas cap leash to this new cap. A small sacrifice so people don't steal my gas overnight. Comes with 2 keys and a genuine AC Delco product.

The ACDelco gas cap, made in Mexico, is taller than the Original Equipment gas cap so the gas door will not close even though it has a recessed slot for the tether. not suitable. I ordered a different brand this time but I'll flush the filler tube with a gasket so I can't make a fair comparison and of course no other brand has a tether slot. my loss. The best I can say about ACDelco is that once installed it is locked. Some brands require the key to be turned in a certain direction to lock, but