automatic transmission GMC SIERRA CLASSIC 2007 Owner's Guide

{CAUTION:
Four-wheel drive vehicles with the transfer
case in NEUTRAL will allow the vehicle to
roll, even if your automatic transmission
shift lever is in PARK (P). So, be sure the
transfer case is in a drive gear — not in
NEUTRAL. Always set your parking brake.
Follow the proper steps to be sure your vehicle
will not move. SeeShifting Into Park (P)
(Automatic Transmission) on page 170.
If you are pulling a trailer, seeTowing a Trailer on
page 429.
Mirrors
Manual Rearview Mirror
Pull or push the tab under the inside rearview
mirror to adjust it to the night or daytime setting. In
the nighttime setting, the glare from headlamps
behind the vehicle will be less intense.
Automatic Dimming Rearview Mirror
with OnStar
®, Compass and
Temperature Display
Your vehicle may have this feature. When on, an
automatic dimming mirror automatically dims
to the proper level to minimize glare from lights
behind you after dark.
The mirror also includes a dual 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.
P(On/Off):This is the on/off button.
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, you will need to calibrate
the compass. For more information on calibration,
see below.
176

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

Instrument Panel Overview
Automatic Transmission Version shown, Manual Transmission Version similar
210

The main components of your instrument panel are the following:
A. Dome Lamp Override Button. SeeDome Lamp
Override on page 227.
B. Headlamp Controls. SeeHeadlamps on
page 221.
C. Air Outlets. SeeOutlet Adjustment on
page 243.
D. Automatic Transfer Case/Electronic Transfer
Case/Traction Assist System (TAS). See
Four-Wheel Drive on page 153andTraction
Assist System (TAS) on page 363.
E. Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 214.
F. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 245.
G. Range Selection Mode (Allison Transmission
®
only) Button (If Equipped). SeeAutomatic
Transmission Operation on page 140.
H. Shift Lever. SeeAutomatic Transmission
Operation on page 140orManual Transmission
Operation on page 149for manual
transmissions.
I. Tow/Haul Selector Button (If Equipped). See
Tow/Haul Mode on page 147.J. Audio System. SeeAudio System(s) on
page 289.
K. Climate Control System. SeeClimate Control
System on page 230,Dual Climate Control
System on page 231andDual Automatic
Climate Control System on page 235.
L. Instrument Panel Fuse Block.Instrument Panel
Fuse Block on page 600.
M. Cargo Lamp Button. SeeCargo Lamp on
page 228.
N. Hood Release. SeeHood Release on
page 479.
O. Steering Wheel Control Buttons (If Equipped).
SeeDriver Information Center (DIC) on
page 265orAudio Steering Wheel Controls on
page 349.
P. Center Instrument Panel Fuse Block. See
Center Instrument Panel Fuse Block on
page 602.
Q. Parking Brake Release. SeeParking Brake on
page 169.
R. Tilt Wheel Lever. SeeTilt Wheel on page 213.
211

Windshield Washer
LQ(Washer Fluid):There is a paddle marked
with the windshield washer symbol at the top
of the multifunction lever. To spray washer uid on
the windshield, push the paddle. The wipers will
clear the window and then either stop or return to
your preset speed.
{CAUTION:
In freezing weather, do not use your
washer until the windshield is warmed.
Otherwise the washer uid can form ice
on the windshield, blocking your vision.
Cruise Control
9(Off):Move the
switch to this position to
turn off the cruise
control system.
If your vehicle is has an Allison
®automatic
transmission, see “Grade Braking and Cruise
Grade Braking (Allison Transmission
®) under
Tow/Haul Mode on page 147for an explanation of
how cruise control interacts with the tap up/down
gear selection, tow/haul and grade braking
systems.
217

Instrument Panel Cluster
Your instrument cluster is designed to let you know at a glance how your vehicle is running. You will
know how fast you are going, about how much fuel you have and many other things you will need to know
to drive safely and economically.
United States Heavy Duty Automatic Transmission version shown. Canada, Light Duty Automatic and Manual
Transmission Clusters similar.
245

If your vehicle has an Allison Transmission®and
the shift lever is in the MANUAL MODE (M)
position, the DIC will display the current gear
range. The DIC will also display the gear range as
it is shifted up or down. For example, if the gear
range is currently set to 6, the DIC will display
(6)54321. When thegear range is shifted down
one time, the DIC will display 6 (5)4321. See
Automatic Transmission Operation on page 140for
more information.
3(Trip Information):Press this button to
display the odometer, trip odometers, timer, engine
hours, and selected range if your vehicle has an
Allison Transmission
®.
t(Fuel Information):Press this button to
display the current range, fuel used, average fuel
economy, and engine oil life.
4(Customization):Press this button to access
the vehicle settings menu and customize the
personal settings on your vehicle.
r(Select):Press this button to reset certain
DIC functions and set your customization settings.
Pressing any of the four DIC buttons will
acknowledge DIC messages and clear them from
the DIC display.
DIC Operation and Displays
The Driver Information Center (DIC) comes on
when the ignition is on. After a short delay, the DIC
will display the information that was last displayed
before the engine was turned off.
The DIC has different modes which can be
accessed by pressing the four DIC buttons located
on the steering wheel. These buttons are trip
information, fuel information, customization, and
select. The button functions are detailed in
the following pages.
266

Engine Hours:Press the trip information button
until ENGINE HOURS appears on the display.
This mode shows the total number of hours
the engine has run. Pressing and holding the reset
stem located on the instrument cluster for about
four seconds will also display the engine hour
information after the odometer is displayed when
the vehicle is off.
Selected Range:If your vehicle has an Allison
Transmission
®and the vehicle is in the MANUAL
MODE (M) position, press the trip information
button until SELECTED RANGE: M# appears on
the display. The DIC will display the current
gear range. For example, if the gear range is set
to 6, the DIC will display SELECTED RANGE: M6.
SeeAutomatic Transmission Operation on
page 140for more information.
Fuel Information Button
t
(Fuel Information):Press the fuel information
button to scroll through the range, fuel used,
average fuel economy, and the engine oil
life system.Fuel Range:Press the fuel information button
until RANGE appears on the display. This
mode shows the remaining distance you can drive
without refueling. It is based on fuel economy
and the fuel remaining in the fuel tank. The display
will show LOW if the fuel level is low.
The fuel economy data used to determine fuel
range is an average of recent driving conditions.
As your driving conditions change, this data is
gradually updated. Fuel range cannot be reset.
Fuel Used:Press the fuel information button until
FUEL USED appears on the display. This mode
shows the number of gallons or liters of fuel used
since the last reset of this menu item. To reset
the fuel used information, press and hold the select
button for one second while FUEL USED is
displayed.
Average Fuel Economy:Press the fuel
information button until AVG ECON appears on
the display. This mode shows how many miles per
gallon (MPG) or liters per 100 kilometers
(L/100 km) your vehicle is getting based on
current and past driving conditions.
268

DIC Vehicle Customization
Your vehicle may have customization capabilities
that allow you to program some features to one
setting based on your preference. All of the
customizable options listed may not be available on
your vehicle. Only the options available will be
displayed on your Driver Information Center (DIC).
The default settings for the customization features
were set when your vehicle left the factory, but
may have been changed from their default
state since then.
To change feature preferences, make sure the
ignition is on and the vehicle is in PARK (P).
To avoid excessive drain on the battery, it
is recommended that the headlamps are turned
off. Press the customization button to scroll
through the available customizable options.
After pressing the customization button, VEHICLE
SETTINGS will momentarily display before
going to a customization option.
Lock Doors (Automatic Transmission only)
If you have an automatic transmission vehicle,
press the customization button until LOCK DOORS
appears in the display. To select your preference
for automatic locking, press the select button
while LOCK DOORS is displayed on the DIC.
Pressing the select button will scroll through the
following choices:
LOCK DOORS: IN GEAR (default):The doors
will lock when the vehicle is shifted out of
PARK (P).
LOCK DOORS: WITH SPEED:The doors will
lock when the vehicle speed is above
8 mph (13 km/h) for three seconds.
Choose one of the available options and press the
customization button while it is displayed on the
DIC to select it and move on to the next feature.
For more information on automatic door locks, see
Programmable Automatic Door Locks on
page 123.
282

Unlock Doors (Automatic
Transmission only)
If you have an automatic transmission vehicle,
press the customization button until UNLOCK
DOORS appears in the display. To select
your preference for automatic unlocking, press the
select button while UNLOCK DOORS is displayed
on the DIC. Pressing the select button will
scroll through the following choices:
UNLOCK DOORS: IN PARK (default):All of the
doors will unlock when the vehicle is shifted
into PARK (P).
UNLOCK DRIVER: IN PARK:The driver’s door
will be unlocked when the vehicle is shifted
into PARK (P).
UNLOCK DOORS: KEY OUT:All of the doors
will unlock when the key is taken out of the
ignition.UNLOCK DOORS: MANUALLY:The doors will
not be unlocked automatically.
Choose one of the available options and press the
customization button while it is displayed on the
DIC to select it and move on to the next feature.
For more information on automatic door locks, see
Programmable Automatic Door Locks on
page 123.
Door Lock Delay (Crew Cab only)
If your DIC does not have this feature, you still
may be able to program the delayed locking
feature. SeeDelayed Locking on page 122for
more information.
When locking the doors with the power lock switch
or the Remote Keyless Entry (RKE) transmitter
and a door is open, the delayed locking feature will
delay locking the doors until ve seconds after
the last door is closed.
283