2007 GMC SIERRA lock

Shifting Into Park (P)
{CAUTION:
It can be dangerous to get out of your
vehicle if the shift lever is not fully in
PARK (P) with the parking brake rmly 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 will not move, even
when you are on fairly level ground, use
the steps that follow. With four-wheel drive,
if your transfer case is in NEUTRAL, your
vehicle will be free to roll, even if your shift
CAUTION: (Continued)
CAUTION: (Continued)
lever is in PARK (P). So, be sure the
transfer case is in a drive gear — not in
NEUTRAL. If you are pulling a trailer, see
Towing a Trailer on page 445.
1. Hold the brake pedal down with your right foot
and set the parking brake.
2. Move the shift lever into the PARK (P)
position by pulling the shift lever toward
you and moving it up as far as it will go.
3. Be sure the transfer case is in a drive
gear — not in NEUTRAL (N).
4. Turn the ignition key to LOCK.
5. 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).
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Leaving Your Vehicle With the Engine
Running
{CAUTION:
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 rmly set.
If you have four-wheel drive and your
transfer case is in NEUTRAL, your vehicle
will be free to roll, even if your shift lever
is in PARK (P). So be sure the transfer
case is in a drive gear — not in NEUTRAL.
CAUTION: (Continued)
CAUTION: (Continued)
And, if you leave the vehicle with the
engine running, it could overheat and
even catch re. You or others could be
injured. Do not leave your vehicle with the
engine running unless you have to.
If you have to leave your vehicle with the engine
running, be sure your vehicle is in PARK (P)
and the parking brake is rmly 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 rst pulling it toward you. If
you can, it means that the shift lever was not
fully locked into PARK (P).
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Torque Lock
If you are parking on a hill and you do not shift
your transmission into PARK (P) properly,
the weight of the vehicle may put too much force
on the parking pawl in the transmission. You
may nd 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 nd out how, seeShifting Into
Park (P) on page 163.
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, then you will be able to
pull the shift lever out of PARK (P).
Shifting Out of Park (P)
Your vehicle has an automatic transmission shift
lock control system which locks the shift lever
in PARK (P) when the ignition is in the LOCK. You
have to fully apply your regular brakes before
you can shift from PARK (P) when the ignition is
in RUN. SeeAutomatic Transmission Operation on
page 138.
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. Move the shift lever into another gear.
165

Temperature and Compass Display
Press the on/off button, located to the far
left, briey to turn the compass/temperature
display on or off.
If the display reads CAL, the compass needs to
be calibrated. For more information, see “Compass
Calibration” following.To adjust between Fahrenheit and Celsius, do the
following:
1. Press and hold the on/off button for
approximately four seconds until either a
ashing F or C appears.
2. 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.
If an abnormal temperature reading is displayed
for an extended period of time, see your
dealer. Under certain circumstances, a delay in
updating the temperature is normal.
170

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 the
vehicle is 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, the compass could give
false readings.
To 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 untilaZand
a zone number appears in the display. The
compass is now in zone mode.
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 compass/temperature display will return.
172

If the mirrors are accidentally folded/unfolded
manually, they may shake or utter at normal
driving speeds and may not stay in the unfolded
position. If this happens, you will need to reset the
mirrors. See “Resetting the Power Foldaway
Mirrors” next.
Resetting the Power Foldaway Mirrors
You will need to reset the power foldaway mirrors
if the following occurs:
The mirrors are accidentally obstructed while
folding.
They are accidentally manually
folded/unfolded.
The mirrors will not stay in the unfolded
position.
The mirrors shake and utter at normal
driving speeds.
To reset the power foldaway mirrors, fold and
unfold them one time using the mirror controls.
This will reset them to their normal position.
This mirror has the following features.
Automatic Dimming
The driver’s outside mirror will adjust for the glare
of the headlamps behind you. SeeAutomatic
Dimming Rearview Mirror with OnStar
®, Compass
and Temperature Display on page 169.
Curb View Assist
If your vehicle has the memory package, the
outside mirrors are able to perform the curb view
assist mirror function. This feature may be
useful in allowing the driver to view the curb when
parallel parking. This feature will cause the
passenger’s and/or driver’s mirror to tilt to a
preselected position when the vehicle is in
REVERSE (R).
The passenger’s and/or driver’s mirror will return
to its original position when the vehicle is
shifted out of REVERSE (R), or the ignition is
turned off or to LOCK.
This feature can be turned on or off through the
Driver Information Center (DIC). SeeDriver
Information Center (DIC) on page 267.
178

OnStar®System
OnStar®uses several innovative technologies and
live advisors to provide you with a wide range
of safety, security, information, and convenience
services. If your airbags deploy, the system is
designed to make an automatic call to OnStar
®
Emergency advisors who can request emergency
services be sent to your location. If you lock
your keys in the vehicle, call OnStar
®at
1-888-4-ONSTAR and they can send a signal to
unlock your doors. If you need roadside
assistance, press the OnStar
®button and they
can contact Roadside Service for you.
OnStar
®service is provided to you subject to the
OnStar®Terms and Conditions. You may
cancel your OnStar®service at any time by
contacting OnStar®as provided below. A completeOnStar
®Owners Guide and the OnStar®Terms
and Conditions are included in the vehicle’s
OnStar
®Subscriber glove box literature. For more
information, visit onstar.com or onstar.ca,
contact OnStar
®at 1-888-4-ONSTAR
(1-888-466-7827) or TTY 1-877-248-2080, or
press the OnStar
®button to speak with an
OnStar®advisor 24 hours a day, 7 days a week.
Not all OnStar
®features are available on all
vehicles. To check if your vehicle is equipped to
provide the services described below, or for a
full description of OnStar
®services and system
limitations, see the OnStar®Owner’s Guide in your
glove box or visit onstar.com.
OnStar®Services
For new vehicles with OnStar®, the Safe & Sound
Plan, or the Directions & Connections®Plan is
included for one year from the date of purchase.
You can extend this plan beyond the rst year,
or upgrade to the Directions & Connections
®Plan.
For more information, press the OnStar®button
to speak with an advisor. Some OnStar®services
(such as Remote Door Unlock or Stolen Vehicle
Location Assistance) may not be available
until you register with OnStar
®.
180

Available Services with Safe &
Sound®Plan

Automatic Notication of Airbag Deployment
Advanced Automatic Crash Notication
(AACN) (If equipped)
Link to Emergency Services
Roadside Assistance
Stolen Vehicle Location Assistance
AccidentAssist
Remote Door Unlock/Vehicle Alert
OnStar®Vehicle Diagnostics
GM Goodwrench®On Demand Diagnostics
OnStar®Hands-Free Calling with
30 complimentary minutes
OnStar®Virtual Advisor (U.S. Only)
Available Services included with Directions
& Connections®Plan

All Safe and Sound Plan Services
Driving Directions - Advisor delivered or
OnStar®Turn-by-Turn Navigation (If equipped)
RideAssist
Information and Convenience Services
OnStar®Hands-Free Calling
OnStar®Hands-Free Calling allows eligible
OnStar®subscribers to make and receive calls
using voice commands. Hands-Free Calling is fully
integrated into the vehicle, and can be used
with OnStar
®Pre-Paid Minute Packages.
Hands-Free Calling may also be linked to a
Verizon Wireless service plan in the U.S. or a Bell
Mobility service plan in Canada, depending on
eligibility. To nd out more, refer to the OnStar
®
Owners Guide in the vehicle’s glove box, visit
www.onstar.com or www.onstar.ca, or speak with
an OnStar
®advisor by pressing the OnStar®
button or calling 1-888-4-ONSTAR
(1-888-466-7827).
181