air suspension GMC SIERRA DENALI 2003 Owners Manual

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 314 of a mile (1.2 km), this
message will appear on the display and you will
hear a chime. Move the turn signaVmultifunction 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.
3-56

Used Replacement Wheels
-
Putting a used wheel your vehicle is
dangerous. You can’t know how it’s been used
or how far
it’s been driven. It could fail
suddenly and cause a crash.
If you have to
replace a wheel, use a new
GM original
equipment wheel.
I I
Tire Chains
Don’t use lire chains. There’s not enough
clearance. Tire chains used on a vehicle
without the proper amount sf clearance can cause damage to the brakes, suspension or
other vehicle parts. The area damaged by the
CAUTION: (Continued) tire chains could cause
, -u to lose cc..-rol
of
your vehicle and you or others may be injured in
a crash. Use another type of traction device only
if its manufacturer recommends it for use on
your vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device
if it’s contacting your vehicle, and don’t
spin your wheels.
If you do find traction devices
that will
fit, install them on the rear tires.
If a Tire Goes Flat
It’s unusual for a tire to “blow out” while you’re driving,
especially
if you maintain your tires properly. If air
goes out of a tire, it’s much more likely to leak out
slowly. But
if you should ever have a “blowout”, here are
a few tips about what to expect and what
to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot
off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
5-68

If the system is ever reset accidentally, you must
change your oil at
3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed. See
Engine Oil on
page 5-73
for information on resetting the system.
An Emission Control Service.
Lubricate chassis components with each engine oil
and filter change.
Lubricate the front suspension, ball joints, steering
linkage, transmission shift linkage, transfer case shift
linkage and parking brake cable guides. Ball joints
should not be lubricated unless their temperature is
10°F (-12°C) or higher or they could be damaged.
After the services are performed, record the date,
odometer reading and who performed the service on the
maintenance record pages in Part
E of this schedule.
7,500 Miles (12 500 km)
0 Check readfront axle fluid level and add fluid as
needed. Check constant velocity joints and axle seals
for leaking.
page 5-62 for proper rotation pattern and additional
information.
(See footnote +.)
0 Rotate tires. See Tire Inspection and Rotation on
15,000 Miles (25 000 km)
0 Inspect engine air cleaner filter if you are driving in
dusty conditions. Replace filter
if necessary. An
Emission Control Service. (See footnote
t.)
0 Check readfront axle fluid level and add fluid as
needed. Check constant velocity joints and axle seals
for leaking.
0 Rotate tires. See Tire Inspection and Rotation on
page 5-62
for proper rotation pattern and additional
information.
(See footnote +.)
6-6

Part C: Periodic Maintenance
Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).
You should let your dealer’s
service department or other qualified service center do
these jobs. Make sure any necessary repairs are
completed at once.
Proper procedures to perform these services may be
found in a service manual. See
Service Publications
Ordering lnformation on page
7- 10.
Steering and Suspension Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, chafing, etc.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in the floor pan or could let
exhaust fumes into the vehicle. See
Engine Exhaust
on page
2-26.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect
all pipes,
fittings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
6-1 4

Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
RETAIL SELL PRICE:
$120.00
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and specifications for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE:
$50.00
Service Bulletins
Service Bulletins give technical service information
needed to knowledgeably service General Motors cars
and trucks. Each bulletin contains instructions to
assist in the diagnosis and service of your vehicle.
In Canada, information pertaining to Product Service
Bulletins can be obtained by contacting your General
Motors dealer or by calling 1-800-GM-DRIVE
(1 -800-463-7483).
Owner’s Information
Owner publications are written specifically for owners
and intended to provide basic operational information
about the vehicle. The owner’s manual will include
the Maintenance Schedule for all models.
In-Portfolio: Includes
a Portfolio, Owner’s Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00
Without Portfolio: Owner’s Manual only.
RETAIL SELL PRICE:
$25.00
7-1 0

Securing a Child Restraint
Center Rear Seat Position
............................ 1-48
Designed for the LATCH System
................... 1-46
Rear Outside Seat Position
........................... 1-46
Select Button
................................................. 3-53
Service
........................................................... 5-3
Vehicle
..................................................... 5-4
Doing Your Own Work
................................... 5-4
Engine Soon Light
....................................... 3-38
Publications Ordering Information
................... 7-10
Right Front Seat
Position
.............................. 1-50
Adding Equipment to the Outside
of Your
SERVICE
4 WHEEL STEER ............................. 3-58
SERVICE 4WD
............................................... 3-56
SERVICE AIR SUSPENSION
........................... 3-56
SERVICE AIRBAG
.......................................... 3-55
SERVICE BRAKE BOOSTER
........................... 3-55
SERVICE BRAKE SYSTEM
............................. 3-55
Service Bulletins
............................................. 7-1 0
Service Manuals ............................................. 7-10
Setting the Time
............................................. 3-61
Sheet Metal Damage
.................................... 5-91
Shifting Into Park (P)
.................................... 2-23
Setting Preset PTYs (RDS Only)
....................... 3-67
Setting Preset Stations
.................................... 3-65
Setting the Tone (Bassnreble)
.......................... 3-66
Shifting Out of Park (P)
................................... 2-25 Skidding
........................................................ 4-1 5
Some Other Rainy Weather Tips ....................... 4-32
Spare Tire
..................................................... 5-85
Spare Tire Check
............................................ 6-11
Specifications. Capacities
............................... 5-1 04
Speedometer .................................................. 3-26
Starter Switch Check
....................................... 6-12
Starting Your Engine
....................................... 2-16
Steering
.......................................................... 4-9
Steering and Suspension Inspection
.................. 6-14
Steering in Emergencies
.................................... 4-9
Steering Tips
................................................... 4-9
Center Console Storage Area
.... ............ 2-39
Cupholder(s)
............................................... 2-39
Glove Box
.................................................. 2-39
Steering
Wheel Controls, Audio
......................... 3-81
Storage Areas
Storing a Flat or Spare Tire and
Tools ............... 5-83
Stuck in Sand, Mud, Ice or Snow
...................... 4-42
Sun Visors
..................................................... 2-12
Swing-Out Windows
........................................ 2-11
Tachometer
................................................ 3-26
Tailgate
........................................................... 2-8
Tailgate Removal
.............................................. 2-9
13