My locking gas cap got very stiff and difficult to remove. I replaced it with another Stant which inherited the problem. I just put the original (never a problem) back in service but haven't driven yet so I don't know the outcome.

The truck is an '11 with a 6.2L engine. Any ideas? My attempts at searching were fruitless.

Thanks,,,

 

I once installed a locking gas cap in my 96 Jeep. Then one day I needed to drop the tank, which was full, of course. I figured I'd simply siphon gas into several gas cans using my Oklahoma credit card. Try as I might, I couldn't get anything out. There was something blocking the hose. I don't know if it was a back flow prevention device, or intentionally in there to stop theft. In any event, I went back to a regular cap which was much more convenient to use.
I also learned that fuel thieves don't siphon gas anyway. They simply punch a hole in your tank and place a can under it.

 

Status: after replacing the cap with the original everything worked fine on the first refill. I'll report again if I have any more difficulty.

 

a 1 inch sheet rock screw drilled into your cap center at a 45 degree angle will fix your cap removal problem......oh...and yes...that key is worthless if you have a 1 inch screw and a screw driver.

 

I always got it open but twisting the cap was difficult. The lock rotated in the cap correctly. I wondered if there was excess vacuum but when opening the cap there never was a noise to indicate that.

If it continues to work OK with the original cap I'll find a way to re-connect the lanyard and I'll shut up! I'd just like to learn something from the experience.