GMC 2013 GMC Sierra, Owner'S Manual, Page: 460 / 534

Black plate (90,1)
GMC Sierra Owner Manual - 2013 - crc - 8/14/12
10-90 Vehicle Care
{
WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
5. Use an adequate clamping
device designed for towing to
ensure that the front wheels are
locked into the straight position.
6. Secure the vehicle to the dolly
following the manufacturer's
instructions.
7. Shift the transfer case to
N (Neutral). See “ Shifting into
Neutral ” under Four-Wheel Drive
on page 9 ‑ 38 for the proper
procedure to select the neutral
position for the vehicle.
8. Release the parking brake only
after the vehicle being towed is
firmly attached to the towing
vehicle.
9. Turn the ignition to LOCK/OFF.
After towing, see “ Shifting Out of
Neutral ” under Four-Wheel Drive on
page 9 ‑ 38 .
Rear Towing (Rear Wheels Off
the Ground)
Two ‐ Wheel ‐ Drive Vehicles
Use the following procedure to dolly
tow a two-wheel-drive vehicle from
the rear:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer's instructions.
2. Drive the rear wheels onto the
dolly.
3. Firmly set the parking brake.
See Parking Brake on
page 9 ‑ 51 .
4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly
following the manufacturer's
instructions.
6. Use an adequate clamping
device designed for towing to
ensure that the front wheels are
locked into the straight position.
7. Turn the ignition to LOCK/OFF.