Chevrolet 2007 TrailBlazer Owner's Manua page 365

Dolly Towing
Front Towing (Front Wheels
Off the Ground)
Two-Wheel-Drive Vehicles
Notice: If you tow a two-wheel-drive vehicle
with the rear wheels on the ground, the
transmission could be damaged. The repairs
would not be covered by your warranty.
Never tow your vehicle with the rear wheels
on the ground.
Four-Wheel-Drive Vehicles
Four-wheel-drive vehicles can be dolly towed
with the rear wheels on the ground.
Use the following procedure to tow your vehicle:
1. Drive the vehicle onto the tow dolly.
2. Shift the automatic transmission to PARK (P).
3. Turn the engine off, but leave the
ignition on.
4. Firmly set the parking brake.
5. Securely attach the vehicle being towed
to the dolly.
CAUTION:
{
Shifting a four-wheel-drive vehicle's
transfer case into NEUTRAL can cause
your vehicle to roll even if the
transmission is in PARK (P). You or
others could be injured. Make sure the
parking brake is firmly set before you shift
the transfer case to NEUTRAL.
6. Shift the transfer case to NEUTRAL (N). See
Four-Wheel Drive on page 121 for the proper
procedure to select the NEUTRAL (N)
position for your vehicle.
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
Four-Wheel Drive on page 121.
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