SERVICE 4WD
If a problem occurs with the four wheel drive system,
this message will appear on the DIC. If this message
appears, stop as soon as possible and turn off the
vehicle. Restart the vehicle and check for the message
on the DIC display. If the message is still displayed,
or appears again when you begin driving, the four wheel
drive system needs service.
SERVICE AIR SUSPENSION
If a problem occurs with the suspension system, this
message will appear on the DIC. If this message
appears, stop as soon as possible and turn off the
vehicle. Restart the vehicle and check for the message
on the DIC display. If the message is still displayed,
or appears again when you begin driving, the air
suspension system needs service.
TURN SIGNAL ON
If a turn signal is left on for 3/4 of a mile (1.2 km), this
message will appear on the display and you will
hear a chime. Move the turn signal/multifunction lever to
the off position. Pressing the select button will
acknowledge this message and clear it from the DIC
display.
CARGO LAMP ON
If the cargo lamp is on, this message will appear on the
DIC and you will hear a chime. Turn off the vehicle
and check the liftgate. Restart the vehicle and check for
the message on the DIC display. Pressing the select
button will acknowledge this message and clear it from
the DIC display.
FUEL LEVEL LOW
If the fuel level is low, this message will appear on the
DIC and you will hear a chime. Refuel as soon as
possible. Pressing the select button will acknowledge
this message and clear it from the DIC display.
CHECK OIL LEVEL
If the oil level in the vehicle is low, this message will
appear on the DIC. Check and oil level and correct it as
necessary. You may need to let the vehicle cool or
warm up and cycle the ignition to be sure this message
will clear. Once the problem is corrected, pressing
the select button will clear this message from the DIC
display.
CHECK WASHER FLUID
If the washerfluid level is low, this message will appear
on the DIC. Adding washerfluid will clear the message.
Pressing the select button will acknowledge this
message and clear it from the DIC display.
3-54
2003 - Sierra Denali
Fuses Usage
4WDFour-Wheel Drive System,
Auxiliary Battery
HTR A/C Climate Control System
LOCK (Relay)Power Door Lock Relay
(Lock Function)
HVAC 1 Climate Control System
L DOORDriver’s Door Harness
Connection
CRUISECruise Control, Power Take
Off (PTO)
UNLOCK (Relay)Power Door Lock Relay
(Unlock Function)
RR FOG LP Not Used
BRAKE Anti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay
(Driver’s Door Unlock
Function)
IGN 0 TCM
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted StoplampFuses Usage
LT TRLR ST/TRN Left Turn Signal/Stop Trailer
LT TRNLeft Turn Signals and
Sidemarkers
VEH STOPVehicle Stoplamps, Brake
Module, Electronic Throttle
Control Module
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRNRight Turn Signals and
Sidemarkers
BODY Harness Connector
DDM Driver Door Module
AUX PWR 2 Not Used
LOCKS Power Door Lock System
ECC Not Used
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORSLeft Power Windows Circuit
Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
5-93
2003 - Sierra Denali
Seats (cont.)
Rear Seat Operation...................................... 1-6
Reclining Seatbacks...................................... 1-4
Secondary Latch System.................................5-78
Securing a Child Restraint
Center Rear Seat Position............................1-47
Designed for the LATCH System...................1-45
Rear Outside Seat Position...........................1-45
Right Front Seat Position..............................1-49
Select Button.................................................3-51
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-37
Publications Ordering Information..................... 7-9
SERVICE 4 WHEEL STEER.............................3-55
SERVICE 4WD ...............................................3-54
SERVICE AIR SUSPENSION...........................3-54
SERVICE AIRBAG ..........................................3-53
SERVICE BRAKE BOOSTER...........................3-53
SERVICE BRAKE SYSTEM.............................3-53
Service Bulletins.............................................7-10
Service Manuals............................................... 7-9
Setting Preset PTYs (RDS Only).......................3-62
Setting Preset Stations....................................3-59
Setting the Time.............................................3-57
Setting the Tone (Bass/Treble)..........................3-60Sheet Metal Damage.......................................5-87
Shifting Into Park (P).......................................2-23
Shifting Out of Park (P)...................................2-25
Skidding........................................................4-17
Some Other Rainy Weather Tips.......................4-34
Spare Tire.....................................................5-82
Spare Tire Check............................................6-11
Specifications, Capacities.................................5-99
Speedometer..................................................3-26
Stalling on an Incline.......................................4-28
Starter Switch Check.......................................6-12
Starting Your Engine.......................................2-17
Steering........................................................4-10
Steering and Suspension Inspection..................6-14
Steering in Emergencies
..................................4-11
Steering Tips
..................................................4-10
Steering Wheel Controls, Audio
.........................3-76
Storage Areas
Center Console Storage Area
........................2-39
Cupholder(s)
...............................................2-39
Glove Box
..................................................2-39
Storing a Flat or Spare Tire, Jack
and Tools
...................................................5-75
Stuck in Sand, Mud, Ice or Snow
......................4-44
Sun Visors
.....................................................2-13
Supplemental Brake Assist System
...................... 4-8
Swing-Out Windows
........................................2-12
13
2003 - Sierra Denali
