2003 GMC YUKON DENALI Owners Manual

Shifting Into Park (P)
It can be dangerous to get out of your vehicle
if the shift lever is not fully in
PARK (P) with
the parking brake firmly set. Your vehicle can
roll. If you have left the engine running, the
vehicle can move suddenly. You or others
could be injured.
To be sure your vehicle won’t
move, even when you’re on fairly level ground,
use the steps that follow.
If you’re pulling a
trailer, see “Towing a Trailer’’ in the Index.
1. Hold the brake pedal down with your right foot and
set the parking brake.
2. Move the shift lever into PARK (P) like this:
Pull the shift lever toward you.
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Move the lever up as far as it will go.
3. Turn the ignition key to LOCK.
4. Remove the key and take it with you.
If you can
leave your vehicle with the ignition key in your
hand, your vehicle is in PARK (P).
Leaving Your Vehicle With the Engine
Running
I
It can be dangerous to leave your vehicle with
the engine running. Your vehicle could move suddenly
if the shift lever is not fully in
PARK (P) with the parking brake firmly set.
And,
if you leave the vehicle with the engine
running,
it could overheat and even catch fire.
You or others could be injured. Don’t leave
your vehicle with the engine running.
If you have to leave your vehicle with the engine
running, be sure your vehicle is in PARK (P) and the
parking brake is firmly set before you leave it. After you
move the shift lever into PARK (P): hold the regular
brake pedal down. Then, see
if you can move the shift
lever away from PARK (P) without first pulling it
toward you. If you can, it means that the shift lever
wasn’t fully locked into PARK
(P).
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Torque Lock
If you are parking on a hill and you don’t shift your
vehicle into PARK (P) properly, the weight of the vehicle
may put
too much force on the parking pawl in the
transmission. You may find it difficult
to pull the shift
lever
out of PARK (P). This is called torque lock.
To prevent torque lock, set the parking brake and then
shift into PARK (P) properly before you leave the
driver’s seat. To find
out how, see Shifting lnto Park (P)
on page 2-26.
When you are ready to drive, move the shift lever out of
PARK (P) before you release the parking brake.
If torque lock does occur, you may need
to have another
vehicle push yours a little uphill
to take some of the
pressure from the parking pawl in the transmission,
so
you can pull the shift lever out of PARK (P).
Shifting Out of Park (P)
Your vehicle has an automatic transmission shift lock
control system. You have
to fully apply your regular
brakes before you can shift from PARK (P) when the
ignition is in RUN. See Automatic Transmission
Operation
on page 2-22.
If you cannot shift out of PARK (P), ease pressure on
the shift lever and push the shift lever all the way up into
PARK (P) as you maintain brake application. Then,
move the shift lever into the gear you want.
If you ever hold the brake pedal down but still can’t shift
out of PARK (P), try this:
1. Turn the key to LOCK.
2. Apply and hold the brake until the end of Step 4.
3. Shift the vehicle to NEUTRAL (N).
4. Start the vehicle and then shift to the drive gear
you want.
5. Have the system fixed as soon as you can.
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Parking Over Things That Burn Ermine Exhaust
Things that can burn could touch hot exhaust parts under your vehicle and ignite. Don’t park
over papers, leaves, dry grass or other things
that can burn. En!
le exhaust car-
AI. It contains ! gas
carbon monoxide
(CO), which you can’t see or
smell.
It can cause unconsciousness and death.
You might have exhaust coming in if:
Your exhaust system sounds strange or
Your vehicle gets rusty underneath.
Your vehicle was damaged in a collision.
Your vehicle was damaged when driving
over high points on the road or over road
debris. different.
Repairs weren’t done correctly.
Your vehicle or exhaust system had been
If you ever suspect exhaust is coming into your
vehicle:
Drive it only with all the windows down to
Have your vehicle fixed immediately.
modified improperly.
blow out any
CO; and
I I
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Running Your Engine While You
Are Parked
It’s better not to park with the engine running. But if you
ever have
to, here are some things to know.
Id g the en- le with the climate co ,ol
system off could allow dangerous exhaust into
your vehicle. See the earlier Caution under
“Engine Exhaust.”
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even
if
the fan is at the highest setting. One place this
can happen is a garage. Exhaust
- with CO -
can come in easily. NEVER park in a garage
with
the engine running.
Another closed-in place can be a blizzard. See
“Winter Driving”
in the Index.
It can be dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P) with
the parking brake firmly set. Your vehicle can
roll. Don’t leave your vehicle when the engine
is running unless you have to.
If you’ve left the
engine running, the vehicle can move
suddenly. You or others could be injured.
To
be sure your vehicle won’t move, even when
you’re on fairly level ground, always set your
parking brake and move
the shift lever to
PARK (P).
Follow the proper steps to be sure your vehicle won’t
move. See Shifting lnto Park
(P) on page 2-26.
If you’re pulling a trailer, see Towing a Trailer on
page
4-47.
2-30

Mirrors
Automatic Dimming Rearview Mirror
with Onstar@, Compass
and
Temperature Display
Your vehicle may have this feature. When on, an
electrochromic mirror automatically dims to the proper
level to minimize glare from lights behind you after dark.
The mirror also includes a duel display in the upper
right corner of the mirror face. The compass reading and
the outside temperature will both appear in the display
at the same time.
Temperature and Compass Display
Press the on/off button, located to the far left, briefly to
turn the comp/temp display on or
off.
If the display reads CAL, you will need to calibrate the
compass. For more information on calibration, see
below.
To adjust between Fahrenheit and Celsius do the
following:
1.
2. Press and hold the
on/off button for approximately
four seconds until either a flashing OF, or "C
appears.
Press the button again to change the display to the
desired unit
of measurement. After approximately
four seconds of inactivity, the new unit will be locked
in and the compass/temperature display will
return.
6 (On/Off): This is the on/off button.
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Electrochromic Mirror Operation
The electrochromic (self dimming) mirror function is
turned on automatically each time the ignition is started.
To operate the electrochromic mirror do the following:
1.
2.
Make sure the green indicator light, located to
the left of the on/off button, is lit. If it’s not, press
and hold the on/off button for approximately
six seconds until the green light comes on,
indicating that the mirror is in electrochromic
(self dimming) mode.
Turn off the electrochromic mirror function by
pressing and holding the on/off button for
approximately six seconds until the green indicator
light turns off.
Compass Variance
The mirror is set in zone eight upon leaving the factory.
It will be necessary to adjust the compass to
compensate for compass variance if you live outside of
zone eight. Under certain circumstances, as during a
long distance cross-country trip, it will be necessary
to
adjust for compass variance. Compass variance is
the difference between earth’s magnetic north and true
geographic north. If not adjusted to account for
compass variance, your compass could give false
readings.
l-0 adjust for compass variance do the following:
1. Find your current location and variance zone
number on the following zone map.
2. Press and hold the on/off button until a Z and a
zone number appears in the display. The compass
is now in zone mode.
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3. Keep pressing the on/off button until the desired
zone number appears in the display. Release the
button. After approximately four seconds of
inactivity, the new zone number will be locked in
and the comphemp display will return.
4. Calibrate the compass as described below.
Compass Calibration
The compass may need calibration if one of the
following occurs:
After approximately five seconds, the display does
not show a compass heading
(N for North, for
example), there may be a strong magnetic field
interfering with the compass. Such interference may
be caused by a magnetic antenna mount, magnetic
note pad holder or a similar magnetic item.
The compass does not display the correct heading
and the compass zone variance is set correctly. In
order
to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed, push
the on/off button for approximately
12 seconds or
until CAL is displayed.
The compass can be calibrated by drivingthe vehicle in
circles at
5 mph (8 km/h) or less until the display
reads a direction.
Passenger Air Bag Indicator
Your vehicle may be equipped with a passenger air bag
indicator, on the mirror glass, just above the buttons.
If your vehicle has this feature, the mirror will display the
word
ON, or an air bag symbol in Canada, when the
passenger air bag is enabled. For more information, see
Passenger Sensing System on page
1-8 1.
Cleaning the Mirror
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner.
Do not spray
glass cleaner directly on the mirror as that may cause
the liquid cleaner
to enter the mirror housing.
2-33