Hummer 2007 H3 Owner's Manual page 296

Dinghy Towing
Use the following procedure to tow your vehicle:
1. Shift the transmission to NEUTRAL (N).
2. Turn the engine off, but leave the
ignition in ON.
3. Firmly set the parking brake.
4. Securely attach the vehicle being towed to
the tow vehicle.
CAUTION:
{
Shifting a full-time four-wheel-drive
vehicle's transfer case into NEUTRAL
can cause your vehicle to roll even if the
automatic transmission is in PARK (P) or
the manual transmission is in any gear.
You or others could be injured. Make sure
the parking brake is firmly set before
you shift the transfer case to NEUTRAL.
296
5. Shift the transfer case to NEUTRAL (N). See
Full-Time Four-Wheel Drive on page 111 for
the proper procedure to select the NEUTRAL
position for your vehicle.
6. Put the transmission in PARK (P) for an
automatic transmission or in FIRST (1) for
a manual transmission.
7. Release the parking brake only after the
vehicle being towed is firmly attached to
the towing vehicle.
8. Turn the ignition off.
After towing, see "Shifting Out of NEUTRAL"
under Full-Time Four-Wheel Drive on page 111.
Dolly Towing
Notice: Dolly towing your vehicle will damage
drivetrain components. Do not dolly tow
your vehicle.
Your vehicle cannot be dolly towed. If you must
tow your vehicle behind another, use the
dinghy towing procedure listed previously.