I just used the Volt tire inflator to increase pressure on each tire of my recently-bought 2015, per the video on https://gm-volt.com/forum/showthread.php?18943-Chevy-Volt-Flat-Tire-Tire-Inflator-Guide. The dial initially showed pressure similar to the TPMS; I added air up to about 40 psi...

I just opened the left hatch door in the trunk and it is empty. I am wondering if this is only included in the the Premier.

If you need to inflate the tires or fix a flat, the owner's manual should be your primary reference. However, the PDF below may be easier to read. It can be printed and stored in your glove compartment with your Owners Manual, or saved to your phone. I recommend new Volt owners try out the air...

The Volt's compressor gauge is nearly 100% accurate as I demonstrate in this video. Anyone else notice how accurate it is with their Volt inflator? http://youtu.be/jyBmnp_wDN4 MrEnergyCzar