lock GMC SIERRA 2007 Workshop Manual

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

Instrument Panel Storage Area
Your vehicle may have an instrument panel
storage area. It is located above the glove box.
To open, press and hold the driver’s side of the
handle in and pull out on the exposed portion
of the handle.
Center Console Storage Area
Your vehicle may have an upper and lower center
console storage area with cupholders.
To access the upper storage area, pull lever (A) up.
To access the lower storage area, raise the upper
storage bin, then pull lever (B) up. Use the key to
lock and unlock the lower storage area.
197

Luggage Carrier
The vehicle may have a luggage carrier that can
be used to load things on top of the vehicle.
The luggage carrier has siderails attached to the
roof. It may also have crossrails which can be
moved back and forth to help secure cargo. Tie the
load to the siderails or siderail supports.
Notice:Loading cargo on the luggage carrier
that weighs more than 200 lbs (91 kg) or
hangs over the rear or sides of the vehicle
may damage your vehicle. Load cargo so that
it rests on the slats as far forward as
possible and against the side rails, making
sure to fasten it securely.
Do not exceed the maximum vehicle capacity
when loading your vehicle. For more information
on vehicle capacity and loading, seeLoading Your
Vehicle on page 425.
To prevent damage or loss of cargo while you are
driving, check to make sure the luggage and
cargo are still securely fastened.Be sure the cargo is properly loaded.If small heavy objects are placed on the roof,
cut a piece of 3/8 inch plywood to t inside
the crossrails and siderails to spread the load.
Tie the plywood to the siderail supports.
Tie the load to the crossrails or the siderail
supports. Use the crossrails only to keep the
load from sliding. To move a crossrail, lift the
release lever, on both sides of the rail, up to
loosen it. Slide the crossrail to the desired
position balancing the force side to side. Press
the release lever on both sides of the rail, down
to tighten it. Try to slide the crossrail back and
forth slightly to be sure it is tight.
If you need to carry long items, move the
crossrails as far apart as they will go. Tie the
load to the crossrails and the siderails or
siderail supports. Also tie the load to the
bumpers. Do not tie the load so tightly that the
crossrails or siderails are damaged.
After moving a crossrail, be sure it is securely
locked into the siderail.
198

Your vehicle has a Center High-Mounted Stoplamp
(CHMSL) located above the rear glass.
If items are loaded on the roof of the vehicle, care
should be taken not to block or damage the
CHMSL unit.
Rear Seat Armrest
Your vehicle may have a rear seat armrest that
contains two cupholders. To access the
cupholders, pull the armrest down from the rear
seatback.
Cargo Management System
Your vehicle may have a cargo management
system. It is located in the bed of the truck. The
system contains three rails located on the front and
sides of the bed.
The system will include four adjustable cargo
tie-downs. The tie-downs can be placed on the
upper and lower slides of the rail.To adjust a tie-down, pull the locator pin out and
move the tie-down to another location making sure
the locator pin lines up with a locator hole on
the rail. If the locator pin does not line up with the
locator hole, the tie-down may be installed
incorrectly. Turn it over and reinstall. Once the pin
is inside the hole, the tie-down will not move
side to side. The maximum load for each rail is
500 lbs (227 kg).
199

Open:From the vent position, the sunroof can
be fully opened either manually or by using the
express-open feature. To open manually, press the
rear of the switch to the rst depression and hold
until the sunroof has reached the desired position.
To open using express-open, press the rear of the
switch fully and release. The sunroof will move to
the full open position. To stop the sunroof partway,
press the switch a second time.
Close:From the vent, or open position, press and
hold the front of the switch to close the sunroof.
The sunroof also has a roller sunshade that can be
used to block the rays of the sun. The roller
sunshade can be manually operated with the
sunroof in an open or closed position. To open the
sunshade, press and unlatch it, and roll it back. To
close, pull it forward and latch it into the closed
position.
When the sunroof is opened, an air deector will
automatically raise. The air deector will retract
when the sunroof is closed.Crew Cab
If your vehicle is a
crew cab, there are
two sunroof switches
located in the overhead
console above the
rearview mirror.
Vent:From the closed position, press the rear of
the passenger’s side switch to vent the sunroof.
To close the sunroof, press and hold the front
of the passenger’s side switch.
Manual-Open/Manual-Close:To open the
sunroof press and hold the rear of the driver’s side
switch until the sunroof reaches the desired
position. To close the sunroof, press and hold the
front of the driver’s side switch until the sunroof
reaches the desired position.
When the sunroof is opened, an air deector will
automatically raise. The air deector will retract
when the sunroof is closed.
201