I'm trying to find a diagrammed instruction manual on how to remove and install a new center bezel for a 2006 H2 Hummer.

Go to local dealer, parts department, ask staff to print an assembly diagram which includes all the parts and how they connected to the others, from it, you can see where the bolt/nut are, you can then remove and install a new one if it can be accessed, you decide to diy or hire mechanic for it.

Contact General Motors or check Ebay, somoene might be selling one. If you are looking for a repair manual, get a Haynes manual from any AutoParts store.

Its just fitted with few screws and hidden lock clips.The clips are very delicate and can break easily.But no worry,the clips are easily available.
on some vehicle models these screws are hidden.Once the panel is loose, don't just pull it out,there are few wire connectors connected,first disconnect the connector plug,then lift the panel out and keep in safe place for re-installing.
For your help,there are few very helpful similar help links with diagrams and solutions to make your task easy.Click the link below:----How to Remove Door Panels on Acura Integra
http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-door-panels-on-acura.html
-------How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html
---------

Vehicle door panel components?
http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html
----------How to remove the door panel to install a new window regulator on Cadillac Deville?
http://howtobyme.blogspot.com/2011/08/how-to-remove-door-panel-to-install-new.html ---------------
Hummer H2 Door Panel Removal? http://technoanswers.blogspot.in/2012/07/hummer-h2-door-panel-removal.html
------- Hummer H2: How to remove Front Door panel? http://www.howtobyme.blogspot.com/2012/07/hummer-h2-how-to-remove-front-door.html
-------------- 2009 Hummer H2 Door Panel Removal http://schematicsdiagram.blogspot.in/2012/07/2009-hummer-h2-door-panel-removal.html
-----------how to remove window motor on driver side door panel on 1994 Oldsmobile Cutlass Ciera
http://technoanswers.blogspot.com/2011/08/how-to-remove-window-motor-on-driver.html------------How to remove door panel, door window motor and regulator on 1991 cavalier?
http://technoanswers.blogspot.com/2011/05/how-to-remove-door-panel-door-window.html-------------
how to remove rear window inner panel on Hyundai Elantra?
http://technoanswers.blogspot.com/2011/05/how-to-remove-rear-window-inner-panel.html------------
ford explorer window motor, regulator and door panel removal?
http://technoanswers.blogspot.com/2011/02/ford-explorer-window-motor-regulator.html------------
These details will help. Thanks,.

DOOR PANEL REMOVAL

Its just fitted with few screws and hidden lock clips. The clips are very delicate and can break easily. But no worry, the clips are easily available.

On some vehicle models these screws are hidden. Once the panel is loose, don't just pull it out, there are few wire connectors connected, first disconnect the connector plug, then lift the panel out and keep in safe place for re-installing.

For your help, there are few very helpful similar help links with diagrams and solutions to make your task easy. Click the link below:----

How to Remove Door Panels on Acura Integra
http://repairhelpcenter.blogspot.com/2011/11/how-to-remove-door-panels-on-acura.html

-------

How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html

---------

Vehicle door panel components?

http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

----------
How to remove the door panel to install a new window regulator on Cadillac Deville?
http://howtobyme.blogspot.com/2011/08/how-to-remove-door-panel-to-install-new.html ---------------
Hummer H2 Door Panel Removal? http://technoanswers.blogspot.in/2012/07/hummer-h2-door-panel-removal.html

-------
Hummer H2: How to remove Front Door panel? http://www.howtobyme.blogspot.com/2012/07/hummer-h2-how-to-remove-front-door.html

--------------
2009 Hummer H2 Door Panel Removal

http://schematicsdiagram.blogspot.in/2012/07/2009-hummer-h2-door-panel-removal.html

-----------

how to remove window motor on driver side door panel on 1994 Oldsmobile Cutlass Ciera
http://technoanswers.blogspot.com/2011/08/how-to-remove-window-motor-on-driver.html

------------

How to remove door panel, door window motor and regulator on 1991 cavalier?
http://technoanswers.blogspot.com/2011/05/how-to-remove-door-panel-door-window.html

-------------
how to remove rear window inner panel on Hyundai Elantra?
http://technoanswers.blogspot.com/2011/05/how-to-remove-rear-window-inner-panel.html

------------
ford explorer window motor, regulator and door panel removal?
http://technoanswers.blogspot.com/2011/02/ford-explorer-window-motor-regulator.html

------------
These details will help.

Thanks,.

Click the link below:-----Door Panel Removal?

--------
How to remove the door panel to install a new window regulator?
http://howtobyme.blogspot.com/2011/08/how-to-remove-door-panel-to-install-new.html

---------
Hummer H2 Door Panel Removal? http://technoanswers.blogspot.in/2012/07/hummer-h2-door-panel-removal.html Hummer H2: How to remove Front Door panel? http://www.howtobyme.blogspot.com/2012/07/hummer-h2-how-to-remove-front-door.html 2009 Hummer H2 Door Panel Removal http://schematicsdiagram.blogspot.in/2012/07/2009-hummer-h2-door-panel-removal.html

-----------
how to remove window motor on driver side door panel?
http://technoanswers.blogspot.com/2011/08/how-to-remove-window-motor-on-driver.html

-----------
ford explorer window motor, regulator and door panel removal?
http://technoanswers.blogspot.com/2011/02/ford-explorer-window-motor-regulator.html

---------
Keep updated for more help.

follow your positive battery cable. it attaches to the starter. once you've located it you see usually 2 bolts hold it in place. take them out undo the wires on the back of it. reverse removal directions to install the new one. pay attention to where each wire came off of the old starter so you know where they go on the new one

I have the same vehicle and was able to remove mine with the following steps: 1) remove light behind each rear of luggage rack rail using phillips screwdriver (one screw each side). 2) remove molding underneath each light using T20 torx driver (2 screws each side). 3) Loosen cross rails nobs. 4) Side cross rails off of roof.

THIS IS THE PAGE WERE YOU CAN DOWN LOAD THE OWNERS MANUAL 400 PAGES TOTAL. WWW.HUMMERXCLUB.COM/MANUALS/2003H2.PDF

it can be easily changed by removing the plastic cover then u will see the light bulb, don't try to change it from the back, it wont open :)