How curious, we both have the same 2005 models.

Could you post a picture?

 

His is the same as yours. He just does not have the Adventure package ( I think that is the option package which adds the rear air suspension) which adds the rear air ride. On ones without the rear air suspension the bottom button panel is just a blank panel. The Tow/Haul (trailer) button does not have an indicator on it - that is on the instrument cluster since on the GM trucks that button is on the shifter and and also have the Tow/Haul indicator in the cluster (and the GM trucks use the same instrument cluster).

 

Thanks MixManSC that makes pefect sense.

As you may knowl, we don't see many Hummers here in the UK, possibly less than 70 or so, so its good to know what variants are out there.

 

Correct mine is the same as yours without leveling button