I apologize in advance...I am a newly divorced(30 yrs) woman that's just trying to fix some things on my car to make it decent enough to trade it in. It breaks my heart because I have had my 2006 H2 since 2008 and she(yes, it's a she) has given me almost 186,000 miles of driving pleasure and kept myself and 3 children safe. The button that you press to change the transmission gears has been gone for a long time...just had to stick my finger in there and press it with no problems. I now have the replacement "button" and have Googled and spent too much time on Youtube looking for how to install it. The man at the auto part store said it would be very easy.....Can anyone point me in the right direction....

 

I also apologize if this is posted in the wrong place. I am open to learning as much as possible

 

I think it would be easier if you carefully unclip the new chrome button part from the black piece and then snap it into your handle. Or try and slide the leather cover back and see if there is a way to unclip the endcap and pull the whole assembly out.

 

Honda button for an H2? Get the right button and it just pushes in to snap in the retainers.
There are many designs/ listings on ebay:
Hummer: H2 Transmission Shifter - BLACK
Hummer: H2 Transmission Shifter Button Chrome!