Chevrolet 2007 Colorado Owner's Manual page 305

Four-Wheel-Drive Vehicles
Use the following procedure to tow your vehicle
from the rear:
1. Drive the vehicle onto the dolly.
2. Firmly set the parking brake. See Parking
Brake on page 133 for more information.
3. Put an automatic transmission in PARK (P)
or a manual transmission in FIRST (1).
4. Follow the dolly manufacturer's instructions to
attach and secure the vehicle being towed to
the dolly and then the loaded dolly to the
tow vehicle.
For manual transmission vehicles, make sure
the wheels are straight before proceeding
to the next steps. On automatic transmission
vehicles, use an adequate clamping device
to ensure that the front wheels are locked
into the straight position.
CAUTION:
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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) for an
automatic transmission, or if your vehicle
is in gear, for a manual transmission.
You or others could be injured. Make
sure the parking brake is firmly set before
you shift the transfer case to NEUTRAL.
5. Shift the transfer case to NEUTRAL.
See Four-Wheel Drive on page 129 for
more information.
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