Hummer 2009 H2 - Manual (Page 127)

Shifting into Neutral
To shift the transfer case to N (Neutral) do the following:
1. Make sure the vehicle is parked so that it will
not roll.
2. Set the parking brake and apply the regular brake
pedal. See Parking Brake on page 2-42.
3. Start the vehicle or turn the ignition to ON/RUN.
4. Put the transmission in N (Neutral).
5. Shift the transfer case to Full-Time Four-Wheel
Drive.
6. Turn the transfer case dial clockwise to N (Neutral)
position. The transfer case will not shift to N (Neutral)
unless this position is held for 10 seconds. The
N (Neutral) light will come on and then the dial can
be slowly released. The dial will be in the Four-Wheel
Low Lock position but the transfer case will be in
N (Neutral) with the N (Neutral) light on.
7. If the engine is running, make sure that the transfer
case is in N (Neutral) by shifting the transmission
to R (Reverse) for one second, then shift the
transmission to D (Drive) for one second.
8. Turn the ignition to ACC/ACCESSORY, which will
turn the engine off.
9. Place the transmission shift lever in P (Park).
10. Release the parking brake prior to moving the
vehicle.
11. Turn the ignition to LOCK/OFF.
Shifting Out of Neutral
To shift out of N (Neutral) do the following:
1. Set the parking brake and apply the regular brake
pedal.
2. Shift the transmission to N (Neutral) and turn the
ignition to ON/RUN with the engine off.
3. Turn the transfer case dial to Full-Time Four-Wheel
Drive, Four-Wheel High Lock or Four-Wheel
Low Lock.
After the transfer case has shifted out of N (Neutral)
the N (Neutral) light will go out.
4. Release the parking brake prior to moving the
vehicle.
Notice: Shifting the transmission into gear before
the requested mode indicator light has stopped
flashing could damage the transfer case. To help
avoid damaging the vehicle, always wait for the
mode indicator lights to stop flashing before
shifting the transmission into gear.
5. Start the engine and shift the transmission to the
desired position.
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