🔒 ACDelco GM Original Equipment GT306 Fuel Tank Filler Cap - Enhanced Performance & Reliability Review

Good OEM replacement. These caps usually cause the evap code to appear on OBDII readers. Replace the cap first if you don't notice anything abnormal. Fits 2006 Hummer H2 SUT (truck but I'm sure it will fit other models too).

This coverage was much better than what the local auto parts store was offering. It is sealed in the spout and has a secondary seal that runs around the outside of the spout. On our Hummer H2 we kept getting the "tighten gas tank cap" message and that fixed the problem.

This gas cap fits my 2005 Hummer SUT H2 perfectly. Even with a clip to keep it from falling to the ground, down to my black plastic liner that holds the petrol gun in place. But I just wish I could find the same one that had a key lock. Because the lock plate cover ordered by someone else didn't fit my Hummer.

Body Shop replaced the original fuel cap on my 07 H3 with a non-original one after a crash repair. A non-OEM gas cap can cause a leak in the evaporator, causing the engine light to illuminate and the engine to run rough. These problems seem to have been fixed with a factory gas cap on my truck. Plus, it looks just like the cap that originally came with the truck. I am satisfied with this product.

Thanks to Revain for moving the valve. After researching my engine lights and then using an ODB scanner/reader and investigating the cause of the emissions code, I was able to research further online and found a few causes. One replaced the gas cap - I also found one sold by Revain that fitted perfectly. Next it was necessary to install the canister purge valve. I found instructions on YouTube videos that were perfect and so easy. After installing the valve, I reset the code using the ODB…