Ignition Positions (Key Access) - GMC Sierra 2500 HD2022 Owner's Manual

Caution (Continued)
can mean premature wear and earlier
replacement. Follow this breaking-in
guideline every time you get new
brake linings.
Do not tow a trailer during break-in.
See Trailer Towing 0 278 for the trailer
towing capabilities of the vehicle and
more information.
Following break-in, engine speed and load
can be gradually increased.
On new vehicles, the various mechanical and
electrical systems experience a break-in
period during the first 6,400 km
(4,000 miles) of routine driving. As the
vehicle is driven, the mechanical systems
adjust to provide optimal fuel economy and
transmission shift performance.
Electrical systems will adapt and calibrate
during the break-in period. A one-time
occurrence of clicks and similar vehicle
noises is normal during this process.
Normal driving charges the vehicle s battery
to achieve the best operation of the vehicle,
including fuel economy.

Ignition Positions (Key Access)

0. Stopping the Engine/LOCK/OFF
1. ACC/ACCESSORY
2. ON/RUN
3. START
The ignition switch has four positions.
To shift out of P (Park), the ignition must be
ON/RUN and the brake pedal must be
applied.
Driving and Operating
0 (Stopping the Engine/LOCK/OFF) : This
position turns off the vehicle. It also locks
the ignition, the transmission, and the
steering column, if equipped with a locking
steering column.
To turn off the vehicle:
1. Make sure that the vehicle is stopped.
2. Shift to P (Park).
3. Continue to hold the brake pedal, then
set the parking brake. See Electric
Parking Brake 0 245.
4. Push the key all the way in toward the
steering column, then turn the key to
LOCK/OFF.
5. Remove the key.
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