2007 GMC SIERRA CLASSIC roof

Seats and Restraint Systems
....................... 7
Front Seats
.............................................. 9
Rear Seats
............................................. 19
Safety Belts
............................................ 22
Child Restraints
...................................... 44
Airbag System
........................................ 91
Restraint System Check
....................... 111
Features and Controls
.............................. 113
Keys
..................................................... 115
Doors and Locks
.................................. 120
Windows
............................................... 129
Theft-Deterrent Systems
....................... 131
Starting and Operating Your Vehicle
..... 134
Mirrors
.................................................. 176OnStar®System
................................... 189
Universal Home Remote System
.......... 191
Storage Areas
...................................... 202
Sunroof
................................................ 205
Instrument Panel
....................................... 207
Instrument Panel Overview
................... 210
Climate Controls
................................... 230
Warning Lights, Gages, and Indicators
.... 244
Driver Information Center (DIC)
............ 265
Audio System(s)
................................... 289
Driving Your Vehicle
................................. 355
Your Driving, the Road, and
Your Vehicle
..................................... 356
Towing
................................................. 423
2007 GMC Sierra Classic Owner ManualM
1

Mirrors......................................................... 176
Manual Rearview Mirror............................. 176
Automatic Dimming Rearview Mirror with
OnStar
®, Compass and Temperature
Display................................................... 176
Automatic Dimming Rearview Mirror with
Compass and Temperature Display........ 180
Outside Manual Mirrors............................. 183
Outside Trailer-Tow Mirrors....................... 183
Outside West Coast-Type Mirrors.............. 185
Outside Power Mirrors............................... 185
Outside Power Foldaway Mirrors............... 186
Outside Automatic Dimming Mirror............. 187
Outside Curb View Assist Mirrors.............. 187
Outside Convex Mirror............................... 188
Outside Heated Mirrors............................. 188
OnStar
®System.......................................... 189Universal Home Remote System................ 191
Universal Home Remote System
(With Three Round LED)....................... 191
Universal Home Remote System
(With One Triangular LED)..................... 192
Universal Home Remote System
Operation (With Three Round LED)....... 193
Universal Home Remote System
Operation (With One Triangular LED)..... 198
Storage Areas............................................. 202
Glove Box................................................. 202
Cupholder(s).............................................. 202
Front Storage Area.................................... 202
Center Console Storage Area.................... 202
Tonneau Cover......................................... 203
Sunroof....................................................... 205
Section 2 Features and Controls
114

Sunroof
The vehicle may have a power sliding sunroof.
To open or close the sunroof, the ignition must be
on or Retained Accessory Power (RAP) must
be active. SeeRetained Accessory Power (RAP)
on page 137for more information.
The sunroof control is
located on the overhead
console. Press the
rear of the control to
open the sunroof to the
vent position, then
press the rear of the
control again to
express-open the
sunroof.
To close the sunroof, press and hold the front of
the control. The control must be held until the
glass stops moving, so that the sunroof will be fully
seated.The sunroof also has a roller sunscreen that can
be used to block the rays of the sun. The roller
sunscreen can be manually operated with
the sunroof in an open or closed position. To open
the sunscreen, press up to unlatch it and roll it
back. To close, pull it forward and latch it to
the close position.
If the battery has been recharged, disconnected,
or not working, the sunroof may need to be
reprogrammed. To do this, start the vehicle and
press forward on the sunroof control until it moves
to a fully closed position. This resets the sunroof
memory, enabling the sunroof to function properly.
205

Instrument Panel Overview........................ 210
Hazard Warning Flashers.......................... 212
Other Warning Devices............................. 213
Horn.......................................................... 213
Tilt Wheel.................................................. 213
Turn Signal/Multifunction Lever.................. 214
Turn and Lane-Change Signals................. 214
Headlamp High/Low-Beam Changer.......... 215
Flash-to-Pass............................................ 216
Windshield Wipers..................................... 216
Windshield Washer.................................... 217
Cruise Control........................................... 217
Headlamps................................................ 221
Headlamps on Reminder........................... 222
Daytime Running Lamps (DRL)................. 222
Automatic Headlamp System..................... 223
Fog Lamps................................................ 225
Auxiliary Roof Mounted Lamp.................... 226
Instrument Panel Brightness...................... 226
Dome Lamps............................................. 226
Dome Lamp Override................................ 227
Entry Lighting............................................ 227
Exit Lighting.............................................. 227Front Reading Lamps................................ 227
Cargo Lamp.............................................. 228
Accessory Power Outlet(s)........................ 228
Ashtray(s) and Cigarette Lighter................ 229
Climate Controls......................................... 230
Climate Control System............................. 230
Dual Climate Control System..................... 231
Dual Automatic Climate Control System.... 235
Outlet Adjustment...................................... 243
Warning Lights, Gages, and Indicators..... 244
Instrument Panel Cluster........................... 245
Speedometer and Odometer...................... 246
Trip Odometer........................................... 246
Tachometer............................................... 246
Safety Belt Reminder Light........................ 247
Airbag Readiness Light............................. 247
Airbag Off Light......................................... 248
Passenger Airbag Status Indicator............. 250
Battery Warning Light................................ 253
Voltmeter Gage......................................... 253
Up-Shift Light (Manual Transmission)........ 254
Brake System Warning Light..................... 254
Section 3 Instrument Panel
207

S. Cigarette Lighter. SeeAshtray(s) and Cigarette
Lighter on page 229.
T. Accessory Power Outlet. SeeAccessory Power
Outlet(s) on page 228.
U. Manual Selectable Ride Control (If Equipped).
SeeManual Selectable Ride on page 365.
V. Auxiliary Roof Mounted Lamp Button (If
Equipped). SeeAuxiliary Roof Mounted Lamp
on page 226.
W. Passenger Airbag Off Switch (If Equipped).
SeeAirbag Off Switch on page 100.
X. Glove Box. SeeGlove Box on page 202.
Hazard Warning Flashers
The hazard warning ashers warn others. They
also let police know you have a problem.
Your front and rear turn signal lamps will ash on
and off.The hazard warning
asher button is located
on top of the steering
column.
The hazard warning ashers work no matter what
ignition position the key is in, and even if the
key is not in the ignition.
Press the button to make the front and rear turn
signal lamps ash on and off. Press the button
again to turn the ashers off.
When the hazard warning ashers are on, your
turn signals will not work.
212

The headlamp control has four positions:
9(Off):Turn the control to this position to turn
off the Daytime Running Lamps (DRL) and
the automatic headlamps.
AUTO (Automatic):Turn the control to this
position to activate the automatic headlamp mode.
;(Parking Lamps):Turn the control to this
position to turn on the parking lamps, together with
the following:
Sidemarker Lamps
Taillamps
License Plate Lamps
Instrument Panel Lights
Roof Marker Lamps (If the vehicle has them)
5(Headlamps):Turn the control to this position
to turn on the headlamps, together with the
previously listed lamps and lights.Switch the headlamps from high to low-beam by
pushing the turn signal/high-beam lever towards
the instrument panel.
A circuit breaker protects the headlamps. If you
have an electrical overload, the headlamps
will icker on and off. Have your headlamp wiring
checked right away if this happens.
Headlamps on Reminder
A reminder chime will sound when the headlamps
or parking lamps are manually turned on and
your ignition is off and a door is open. To disable
the chime, turn the light off.
Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during
the day. DRL can be helpful in many different
driving conditions, but they can be especially
helpful in the short periods after dawn and before
sunset. Fully functional DRL are required on all
vehicles rst sold in Canada.
222

Auxiliary Roof Mounted Lamp
If your vehicle has this feature, this button includes
wiring provisions for a dealer or a qualied
service center to install an auxiliary roof lamp.
This button is located
on the center of the
instrument panel near
the climate controls.
When the wiring is connected to an auxiliary roof
mounted lamp, pressing the button will activate
the lamp and illuminate an indicator light near the
button. Pressing the button again will turn off
the roof mounted lamp.
If your vehicle has this button, your vehicle may
have the snow plow prep package. For further
information seeAdding a Snow Plow or Similar
Equipment on page 416.
Instrument Panel Brightness
D(Instrument Panel Brightness):This feature
controls the brightness of the instrument panel
lights.
The thumbwheel for this feature is located next to
the headlamp control.
Move the thumbwheel up to adjust the instrument
panel lights and to return the radio display to
full brightness when the headlamps or parking
lamps are on. To turn on the dome lamps, move
the thumbwheel to the farthest position.
Dome Lamps
The dome lamps come on when a door is opened.
The dome lamps can be turned on by moving
the thumbwheel, located next to the exterior lamps
control, to the farthest position. In this position,
the dome lamps will remain on whether a door is
opened or closed.
226

Fixed Mast Antenna
The xed mast antenna can withstand most car
washes without being damaged. If the mast should
ever become slightly bent, straighten it out by
hand. If the mast is badly bent, replace it.
Check occasionally to make sure the mast is
still tightened to its base. If tightening is
required, tighten by hand, then with a wrench
one quarter turn.
XM™ Satellite Radio Antenna
System
The XM™ Satellite Radio antenna is located on
the roof of your vehicle. Keep this antenna clear of
snow and ice build up for clear radio reception.
If your vehicle has a sunroof, the performance of
the XM™ system may be affected if the sunroof
is open.
Loading items onto the roof of your vehicle can
interfere with the performance of the XM™ system.
Make sure the XM™ Satellite Radio antenna is
not obstructed.
Chime Level Adjustment
The radio is used to adjust the vehicle’s chime
level. To change the volume level of the chime,
press and hold pushbutton 6 with the ignition
on and the radio power off. The volume level will
change from the normal level to loud, and
LOUD will appear on the radio display. To change
back to the default or normal setting, press and
hold pushbutton 6 again. The volume level
will change from the loud level to normal, and
NORMAL will appear on the radio display. Each
time the chime volume is changed, three
chimes will sound to indicate the new volume
selected. Removing the radio and not replacing it
with a factory radio or chime module will disable
vehicle chimes.
353