Hummer 2005 H2 - Manual (Page 288)

Front Mounted Receiver
Your vehicle is equipped with a front mounted receiver.
You can use the receiver with a power winch
platform (described later in this section) or with
other accessories.
Never use the front mounted receiver to tow a trailer.
You can use the front mounted receiver to tow your
vehicle behind another. See Recreational Vehicle
Towing on page 4-64.
Receiver Extension
Use the receiver extension (if equipped) with the front
mounted receiver and various light-duty accessories
such as bike racks.
Notice: Do not attach accessories or cargo that
weigh more than 240 lbs. (108 kg) to the receiver
extension. You could damage the receiver extension
and/or your vehicle’s frame components.
The receiver extension was not intended for
heavy-duty use, such as trailer towing, winching or
vehicle recovery.
4-56