transmission GMC SIERRA 2005 Service Manual

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-9
Flash-to-Pass.................................................3-9
Windshield Wipers..........................................3-9
Windshield Washer.......................................3-10
Cruise Control..............................................3-10
Headlamps..................................................3-13
Headlamps on Reminder................................3-14
Daytime Running Lamps (DRL).......................3-14
Automatic Headlamp System..........................3-15
Fog Lamps..................................................3-16
Auxiliary Roof Mounted Lamp.........................3-17
Instrument Panel Brightness...........................3-17
Dome Lamps...............................................3-17
Dome Lamp Override....................................3-18
Entry Lighting...............................................3-18
Exit Lighting.................................................3-18
Front Reading Lamps....................................3-18
Cargo Lamp.................................................3-19
Accessory Power Outlets...............................3-19
Ashtrays and Cigarette Lighter........................3-20Climate Controls............................................3-21
Climate Control System.................................3-21
Dual Climate Control System..........................3-22
Dual Automatic Climate Control System...........3-25
Outlet Adjustment.........................................3-30
Warning Lights, Gages, and Indicators............3-31
Instrument Panel Cluster................................3-32
Speedometer and Odometer...........................3-33
Trip Odometer..............................................3-33
Tachometer.................................................3-33
Safety Belt Reminder Light.............................3-33
Airbag Readiness Light..................................3-34
Airbag Off Light............................................3-34
Passenger Airbag Status Indicator...................3-36
Battery Warning Light....................................3-38
Voltmeter Gage............................................3-38
Up-Shift Light (Manual Transmission)...............3-39
Brake System Warning Light..........................3-39
Anti-Lock Brake System Warning Light.............3-41
Traction Off Light..........................................3-41
Engine Coolant Temperature Gage..................3-42
Transmission Temperature Gage.....................3-43
Malfunction Indicator Lamp.............................3-44
Oil Pressure Gage........................................3-47
Security Light...............................................3-48
Cruise Control Light......................................3-48
Highbeam On Light.......................................3-48
Section 3 Instrument Panel
3-1

Four-Wheel-Drive Light..................................3-48
Tow/Haul Mode Light....................................3-49
Overdrive Disable (Allison Transmission
®Only) . . .3-49
Fuel Gage...................................................3-49
Low Fuel Warning Light.................................3-50
Driver Information Center (DIC).......................3-50
DIC Operation and Displays...........................3-51
DIC Warnings and Messages.........................3-54
DIC Vehicle Customization.............................3-63
Audio System(s).............................................3-69
Setting the Time for Radios without
Radio Data Systems (RDS)........................3-69
Setting the Time for Radios with Radio
Data Systems (RDS)..................................3-70
AM-FM Radio...............................................3-70Radio with CD..............................................3-73
Radio with Cassette and CD..........................3-83
Radio with Six-Disc CD.................................3-98
Rear Seat Entertainment System...................3-111
Rear Seat Audio (RSA)................................3-122
Theft-Deterrent Feature................................3-123
Audio Steering Wheel Controls......................3-124
Radio Reception.........................................3-125
Care of Your Cassette Tape Player...............3-125
Care of Your CDs and DVDs........................3-126
Care of Your CD and DVD Player.................3-126
Fixed Mast Antenna....................................3-127
XM™ Satellite Radio Antenna System............3-127
Chime Level Adjustment...............................3-127
Section 3 Instrument Panel
3-2

The main components of your instrument panel are the following:
A. Dome Lamp Button. SeeDome Lamps on page 3-17.
B. Headlamp Controls. SeeHeadlamps on page 3-13.
C. Air Outlets. SeeOutlet Adjustment on page 3-30.
D. Automatic Transfer Case/Electronic Transfer
Case/Traction Assist System (TAS). SeeFour-Wheel
Drive on page 2-37.
E. Multifunction Lever. SeeTurn Signal/Multifunction
Lever on page 3-7.
F. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-32.
G. Gearshift Lever (Automatic Transmission). See
Automatic Transmission Operation on page 2-26.
H. Tow/Haul Selector and Overdrive Disable (Allison
Transmission
®Only) Button (If Equipped). See
Tow/Haul Mode on page 2-29.
I. Audio System. SeeAudio System(s) on page 3-69.
J. Climate Control System. SeeClimate Control
System on page 3-21,Dual Climate Control System
on page 3-22andDual Automatic Climate Control
System on page 3-25.
K. Instrument Panel Fuse Block.Instrument Panel Fuse
Block on page 5-122.
L. Cargo Lamp Button. SeeCargo Lamp on page 3-19.
M. Hood Release. SeeHood Release on page 5-13.N. Steering Wheel Control Buttons (If Equipped). See
Driver Information Center (DIC) on page 3-50.
O. Center Instrument Panel Block. SeeCenter
Instrument Panel Fuse Block on page 5-124.
P. Parking Brake Release. SeeParking Brake on
page 2-48.
Q. Tilt Wheel Lever. SeeTilt Wheel on page 3-7.
R. Lighter and Accessory Power Outlet. SeeAccessory
Power Outlets on page 3-19, andAshtrays and
Cigarette Lighter on page 3-20.
S. Storage Area. SeeFront Storage Area on page 2-71.
T. Ashtray. SeeAshtrays and Cigarette Lighter on
page 3-20.
U. Manual Selectable Ride Control (If Equipped).
SeeManual Selectable Ride on page 4-10.
V. 4-Wheel Steer Button (If Equipped). See
QUADRASTEER™ on page 4-14.
W. Passenger Airbag Off Switch (If Equipped).
SeeAirbag Off Switch on page 1-73.
X. Auxiliary Roof Mounted Lamp Button (If Equipped).
SeeAuxiliary Roof Mounted Lamp on page 3-17.
Y. Glove Box. SeeGlove Box on page 2-70.
3-5

Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the
hills. When going up steep hills, you may want to step
on the accelerator pedal to maintain your speed.
When going downhill, you may have to brake or shift to
a lower gear to keep your speed down. Of course,
applying the brake takes you out of cruise control. Many
drivers nd this to be too much trouble and don’t use
cruise control on steep hills.
Ending Cruise Control
There are four ways to turn off the cruise control:
Step lightly on the brake pedal,
move the cruise control switch to off, or
shift the transmission to NEUTRAL (N).
If your vehicle has the Stabilitrak®feature, cruise
control will turn off if road conditions cause
Stabilitrak
®to activate.
If the accelerator pedal is held for 60 seconds or
longer, cruise control will turn off.
Erasing Speed Memory
When you turn off the cruise control or the ignition, your
cruise control set speed memory is erased.
Headlamps
The control on the driver’s side of your instrument panel
operates the headlamps.
Turn the control clockwise to operate the lamps.
The headlamp control has four positions:
9(Off):Turning the control to this position turns off
the Daytime Running Lamps (DRL) and the automatic
headlamps.
AUTO (Automatic):Turning the control to this position
puts the system into automatic headlamp mode.
3-13

;(Parking Lamps):Turning the control to this
position turns on the parking lamps, together with the
following:
Sidemarker Lamps
Taillamps
License Plate Lamps
Instrument Panel Lights
Roof Marker Lamps (If Equipped)
5(Headlamps):Turning the control to this position
turns on the headlamps, together with the previously
listed lamps and lights.
You can switch your headlamps from high to low-beam
by pushing the turn signal/high-beam lever towards
the instrument panel.
A circuit breaker protects your headlamps. If you have
an electrical overload, your 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 your headlamps or
parking lamps are manually turned on and your
ignition is off, in LOCK, ACCESSORY, or your door is
open. To disable the chime, turn the light off then
back on.
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
daytime running lamps are required on all vehicles
rst sold in Canada.
The DRL system will come on when the following
conditions are met:
The ignition is on
The exterior lamps control is AUTO
The automatic transmission is not in PARK (P)
The light sensor determines it is daytime
When the DRL are on, only your DRL lamps will be on.
The taillamps, sidemarker and other lamps won’t be
on. The instrument panel won’t be lit up either.
3-14

When it begins to get dark, the automatic headlamp
system will switch from DRL to the headlamps.
When you turn the headlamp switch off, the headlamps
will go off, and your DRL lamps will illuminate,
provided it is not dark outside.
Shifting the transmission into PARK (P) will allow you to
idle the vehicle with the DRL off. The DRL will stay
off until you shift the transmission out of PARK (P).
This procedure applies only to vehicles rst sold in the
United States.
Automatic Headlamp System
When it is dark enough outside, your automatic
headlamp system will turn on your headlamps at the
normal brightness along with other lamps such as
the taillamps, sidemarker, parking lamps and the
instrument panel lights. The radio lights will also be dim.
To turn off the automatic headlamp system, turn the
exterior lamps switch to the off position and then
release. Turning off the automatic headlamp system
with the headlamp switch is not available for vehicles
rst sold in Canada. For vehicles rst sold in Canada,
you can turn off the automatic headlamp systemwhen parked at night by applying the parking brake
before starting your vehicle. The headlamps will remain
off once the vehicle is started for as long as you are
parked. If you release the parking brake, the lights will
turn on. If the parking brake is not released before
you begin to drive, the exterior lamps will turn on above
2 mph (3.2 km/h).
Your vehicle is equipped with a light sensor located on
the top of the instrument panel in the defroster grille.
Be sure it is not covered, or the system will be on
whenever the ignition is on.
The system may also turn on your headlamps when
driving through a parking garage, heavy overcast
weather or a tunnel. This is normal.
There is a delay in the transition between the daytime
and nighttime operation of the Daytime Running
Lamps (DRL) and the automatic headlamp systems so
that driving under bridges or bright overhead street
lights does not affect the system. The DRL and
automatic headlamp system will only be affected when
the light sensor sees a change in lighting lasting
longer than the delay.
3-15

Instrument Panel Cluster
Your instrument cluster is designed to let you know at a glance how your vehicle is running. You’ll know how fast
you’re going, about how much fuel you have and many other things you’ll 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.
3-32

Readings in the low warning zone may occur when a
large number of electrical accessories are operating in
the vehicle and the engine is left at an idle for an
extended period. This condition is normal since the
charging system is not able to provide full power
at engine idle. As engine speeds are increased, this
condition should correct itself as higher engine speeds
allow the charging system to create maximum power.
You can only drive for a short time with the reading
in either warning zone. If you must drive, turn off
all unnecessary accessories.
Readings in either warning zone indicate a possible
problem in the electrical system. Have the vehicle
serviced as soon as possible.
Up-Shift Light (Manual
Transmission)
This light is used on some
models with manual
transmissions.The shift indicator light will show you when to shift to
the next highest gear, and will help you get the best
fuel economy.
Brake System Warning Light
With the ignition on, the brake system warning light will
ash when you set the parking brake. The light will ash if
the parking brake doesn’t release fully. If you try to drive
with the parking brake engaged, a chime will sound when
the vehicle speed is greater than 3 mph (5 km/h).
Your vehicle’s hydraulic brake system is divided into
two parts. If one part isn’t working, the other part can still
work and stop you. For good braking, though, you
need both parts working well.
3-39

Transmission Temperature Gage
Your vehicle may be equipped with a transmission
temperature gage.
When your ignition is on, the gage shows the
temperature of the transmission uid. The normal
operating range is from 180°F (82°C) to about
200°F (93°C).
At approximately 265°F (130°C), the driver information
center will display a TRANSMISSION HOT message
and the transmission will enter a transmission protection
mode. When the transmission enters the protection
mode, you may notice a change in the transmission
shifting patterns. The transmission will return to normal
shifting patterns when the transmission uid temperature
falls below 260°F (127°C).SeeDriver Information Center (DIC) on page 3-50for
further information.
If your vehicle has an Allison transmission, and the uid
reaches temperatures of approximately 275°F (135°C)
or greater, the driver information center will display
a TRANS HOT IDLE ENGINE warning message and a
chime will sound until the temperature falls below
265°F (129°C). Pull the vehicle off the roadway when it
is safe to do so. Set the parking brake, place the
transmission in PARK (P) and allow the engine to idle
until the transmission temperature falls below 265°F
(129°C). If the transmission continues to operate above
265°F (130°C), contact your nearest dealer or the
GM Roadside Assistance Center. SeeRoadside
Assistance Program on page 7-5.
Notice:If you drive your vehicle with the
transmission temperature gage above normal
operating range, you can damage the transmission.
This could lead to costly repairs that would not
be covered by your warranty. Do not drive your
vehicle while the transmission temperature gage
reading is above normal. See your dealer for service. United States
Canada
3-43

The following situations can cause the transmission to
operate at higher temperatures:
Towing a trailer
Hot outside air temperatures
Vehicle overloading
Hauling a large or heavy load
Low transmission uid level
High transmission uid level
Restricted air ow to the radiator and the auxiliary
transmission oil cooler (if equipped).
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures
on a frequent basis, seeScheduled Maintenance
on page 6-4for the proper transmission maintenance
intervals.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The check engine light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after awhile, your emission controls
may not work as well, your fuel economy may not
be as good, and your engine may not run as
smoothly. This could lead to costly repairs that may
not be covered by your warranty.
3-44