GMC Yukon 2025 - Ignition Positions

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
196 Driving and Operating
Caution (Continued)
•
Do
not tow atrailer. See Trailer Towing
3286 for the trailer towing capabilities
of the vehicle and more information.
After the break-in period, the engine speed
and load can be gradually increased.
On new vehicles, the various mechanical
a
n
d electrical systems adjust during the
first 6,400 km (4,000 miles) of routine
driving 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 battery to
achieve the best operation of the vehicle.
Ignition Positions
Vehicles equipped with Keyless Access have
pushbutton starting.
The Remote Key must be in the vehicle for the
system to operate. If the pushbutton start is
not working, the vehicle may be near astrong
radio antenna signal causing interference to
the Keyless Access system. See Remote Key
Operation 38.
To shift out of P (Park), the ignition must be on
or in Service Mode, and the brake pedal must
be applied.
{ Warning
T
urning off the vehicle while moving may
ca
use loss of power assist in the brake and
steering systems and disable the airbags.
While driving, only shut the vehicle off in
an emergency.
Stopping the Engine/LOCK/OFF (No Indicator
Li
ghts): When the vehicle is stopped, press
ENGINE START/STOP once to turn the engine
off.
If the vehicle is in P (Park), the ignition will turn
off, and Retained Accessory Power (RAP) will
remain active. See Retained Accessory Power
(RAP) 3201.
If the vehicle is not in P (Park), the ignition
will return to ON/RUN mode and display
the message SHIFT TO PARK in the Driver
Information Center (DIC). When the vehicle is
shifted into P (Park), the ignition system will
turn off.
The vehicle may have an electric steering
column lock. The lock is activated when the
ignition is turned off and either front door is
opened. Asound may be heard as the lock
actuates or releases. The steering column lock