If you’re wondering how to open the gas tank on a Chevy HHR this video will show you how to open the fuel door on your Chevrolet HHR. unlike many other vehicles, where you will press a button on your remote to open the fuel lid or you will press a button on your driver’s door, usually at the bottom, to open the fuel door, the Chevrolet HHR does things differently when it comes to accessing the fuel filler. This video shows you how you can put gas in your Chevy HHR.