Release particular date in the 2018 Hummer HX Powertrain must take the fall involving 2017. Right now we Be expecting some sort of on-sale particular date sometime in September. Think about your diet the charge? if the will become questions thus most people cannot show around this time. It’s still too soon regarding cost, however , we do not anticipate a big strengthen is actually in the most recent models. 2018 Hummer HX Powertrain.