Hummer 2006 H2 Owner's Manual page 404

Once it is removed, you will see the following:
Release the jack by turning the end of the jack handle
counterclockwise.
To remove the tools, do the following:
1. Pull the bottom of the driver's side second row seat
up to access the tools. See 60/40 Split Bench Seat
on page 1-6 for more information.
5-74
Jack B
2. Remove the strap from the seat rail. Then
carefully slide the tool bag out from under the
seat rail as shown.
Take care to not pinch the seat cables or electrical
harnesses.