2003 GMC SIERRA DENALI coolant level

4. Then fill the coolant surge tank with the proper
mixture, to the FULL COLD mark. 5. With the coolant surge tank pressure cap off, start
the engine and let
it run until you can feel the upper
radiator hose getting hot. Watch out for the
engine cooling fan.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more
of the proper mixture to the coolant surge
tank until the level reaches the FULL COLD mark.
5-35

90,000 Miles (150 000 km)
0 Check readfront axle fluid level and add fluid as
needed. Check constant velocity joints and axle seals
for leaking.
0 Replace fuel filter. An Emission Control Service. (See
Footnote
t.)
0 Replace engine air cleaner filter. An Emission
Control Service.
0 Rotate tires. See Tire Inspection and Rotation on
page 5-62
for proper rotation pattern and additional
information.
(See footnote +.)
97,500 Miles (162 500 km)
c[I 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
100,000 Miles (166 000 km)
0 Inspect spark plug wires. An Emission Control
0 Replace spark plugs. An Emission Control Service.
Service.
0 Change automatic
transmission fluid and filter if the
vehicle
is mainly driven under one or more of these
conditions:
- In heavy city traffic where the outside
temperature regularly reaches
90°F (32°C) or
higher.
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery
service.
0 If you haven’t used your vehicle under severe service
conditions listed previously and, therefore, haven’t
changed your automatic transmission fluid, change
both the fluid and filter.
0 Inspect Positive Crankcase Ventilation (PCV) valve.
An Emission Control Service.
150,000 Miles (240 000 km)
0 Drain, flush and refill cooling system (or every
60 months since last service, whichever occurs first).
See
Engine Coolant on page 5-24 for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.
An Emission Control Service.
0 Inspect engine accessory drive belt. An Emission
Control Service.
6-9

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals specified to
help ensure the safety, dependability and emission
control performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part
D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See Engine Oil on page 5-13 for further
details.
Engine Coolant Level Check Windshield Washer Fluid Level Check
Check
the windshield washer fluid level in the windshield
washer tank and add the proper fluid
if necessary.
See
Windshield Washer Fluid on page 5-38 for further
details.
At Least Once a Month
Tire Inflation Check
Make sure tries are inflated to the correct pressures.
Don’t forget to check your spare tire. See
Tires on
page 5-61
for further details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every
50 hours of tape play. See Audio System(s)
on page 3-61
for further details.
Check the engine coolant level and add
DEX-COOL@
coolant mixture if necessary. See Engine Coolant
on page
5-24 for further details.
6-1 0

Care of Your (cont.)
CD Player
................................ ... 3-84
CDS
.......................................................... 3-84
Cargo Lamp
............................. ... 3-14
CARGO LAMP
ON ....................... ... 3-56
Cassette Tape Messages
................................. 3-73
Cassette Tape Player Service
........................... 6-10
CD Adapter Kits
............................................. 3-74
CD Changer
................................................... 3-78
CD Functions
................................................. 3-80
Center Console Storage Area
........................... 2-39
Center High-Mounted Stoplamp (CHMSL) and
Center Instrument Panel Fuse Block
.................. 5-98
Center Passenger Position, Safety Belts
............. 1-22
Chains, Tires .................................................. 5-68
Check Cargo Lamp
............................................... 5-56
CHANGE ENGINE OIL .................................... 3-54
Engine Light
.................................... ... 3-38
Check Engine Light
.......................... ... 3-38
CHECK OIL LEVEL
..................................... 3-58
CHECK WASHER FLUID
................................. 3-58
Checking Brake Fluid
...................................... 5-40
Checking Coolant ............................................ 5-26
Checking Engine Oil
........................................ 5-14
Checking Things Under the Hood
...................... 5-10
Checking Your Restraint Systems ...................... 1-73
Chemical Paint Spotting
................................... 5-91 Child Restraints
Child Restraint Systems
............................... 1-36
Infants and Young Children
........................... 1-32
Lower Anchorages and Top Tethers for
Children
(LATCH System) .......................... 1-43
Older Children ............................................. 1-30
Securing a Child Restraint Designed for the
Securing a Child Restraint in a Center
Securing a Child Restraint in a Rear
Securing a Child Restraint in the Right
LATCH System
........................................ 1-46
Rear Seat Position
................................... 1-48
Outside Seat Position
............................ 1-46
Front Seat Position
................................... 1-50
Top Strap ................................................... 1-40
Top Strap Anchor Location
............................ 1-41
Cigarette Lighter
............................................. 3-17
Where
to Put the Restraint
........................... 1-38
Cleaning Inside of Your Vehicle
.................................. 5-86
Outside
of Your Vehicle ................................ 5-88
Underbody Maintenance
............................... 5-91
Weatherstrips
.............................................. 5-88
Cleaning Exterior Lamps/Lenses
....................... 5-89
Cleaning the Mirror
......................................... 2-30
Climate Control Dual Automatic
..... . 3-18

Driving Through Flowing Water ..................... 4-32
Driving with a Trailer
....................................... 4-56
Dual Automatic Climate Control System
.......... 3-18
E
Easy Exit Seat .................... .... 2-43
Electrical System
Add-on Equipment
...................................... 5-95
Fuses and Circuit Breakers
........................... 5-95
Power Windows and Other Power Options
...... 5-95
Windshield Wiper Fuses
............................... 5-95
Electrochromic Mirror Operation
........................ 2-28
Maintenance Programs
................................. 3-40
Air CleanedFilter
......................................... 5-1 9
Battery
....................................................... 5-42
Check and Service Engine Soon Light
............ 3-38
Coolant
...................................................... 5-24
Coolant Heater
............................................ 2-17
Coolant Temperature Gage
........................ 3-36
Cooling System Inspection
......................... 6-14
Engine Compartment Overview
...................... 5-1 2
Exhaust
..................................................... 2-26
Fan Noise
.................................................. 5-36
Oil
............................................................. 5-13
Overheating
................................................ 5-27
Starting
...................................................... 2-1 6
Emissions
Inspection and
Engine ENGINE COOLANT HOT
................................. 3-54
Engine Coolant Level Check
............................. 6-10
Engine Hour Meter Display
............................... 3-26
Engine
Oil and Chassis Lubrication Scheduled
Engine
Oil Additives
........................................ 5-17
Engine Oil Level Check
................................... 6-10
Entry Lighting
......................... ............. 3-15
Maintenance
................................................. 6-5
ENGINE OVERHEATED
.................................. 3-54
Erasing HomeLink@ Buttons
...... ......... 2-38
Exit Lighting
............................... ............. 3-15
Express-Down Windows
................................... 2-11
Extender, Safety Belt
....................................... 1-29
Exterior Lamps
............................................... 3-11
F
FabridCarpet ................................................. 5-87
Engine Air Cleaner
...................................... 5-19
Filter
Finding
a PTY Station
(RDS, XMTM and DAB)
................................. 3-67
Finding a Station
............................................ 3-64
Finish Care
.................................................... 5-89
Finish Damage
............................................... 5-91
Fixed Mast Antenna
........................................ 3-84
Flash-To-Pass Feature
....................................... 3-6
Flat Tire
........................................................ 5-68
Flat Tire, Changing
......................................... 5-69

Fluid Automatic Transmission
................................ 5-21
Power Steering
........................................... 5-37
Windshield Washer
...................................... 5-38
FM Stereo
..................................................... 3-82
Fog Lamps
.................................................... 3-14
Folding the Rear Seat
....................................... 1-7
Following Distance
.......................................... 4-57
Footnotes
........................................................ 6-5
Front Axle
...................................................... 5-51
Front Reading Lamps
...................................... 3-15
Fuel
............................................................... 5-5
Additives ...................................................... 5-6
California Fuel
.............................................. 5-6
Filling a Portable Fuel Container
..................... 5-9
Filling Your Tank
........................................... 5-7
Fuels in Foreign Countries .............................. 5-7
Gage ......................................................... 3-42
Gasoline Octane
........................................... 5-5
Gasoline Specifications .................................. 5-5
Low Warning Light ....................................... 3-42
System Inspection
....................................... 6-14
Fuel Information Button
.................................... 3-46
FUEL LEVEL LOW
......................................... 3-58
Fuses Fuses and Circuit Breakers
........................... 5-95
Windshield Wiper ......................................... 5-95
G
Gage
Engine Coolant Temperature
......................... 3-36
Fuel
.......................................................... 3-42
Oil Pressure
........................................... 3-40
Speedometer
.......................................... 3-26
Tachometer
................................................. 3-26
Transmission Temperature
............................. 3-36
Voltmeter Gage
........................................... 3-33
Garage Door Opener
....................................... 2-35
Gasoline
Octane
.................................................... 5-5
Specifications
............................................... 5-5
Glass Surfaces ............................................... 5-88
Glove Box
..................................................... 2-39
GM Mobility Program for Persons with
Disabilities
.................................................... 7-5
Gate
Operator and Canadian Programming
........ 2-37
Hazard Warning Flashers
............................... 3-3
Head Restraints
............................................... 1-6
Headlamp High/Low Beam Changer
.................... 3-6
Headlamps
.................................................... 5-52
Bulb Replacement
....................................... 5-52
Front Turn Signal, Sidemarker and Daytime
Running Lamps
........................................ 5-53

Instrument Panel Brightness Control .................. 3-1 5
Instrument Panel Fuse Block ............................ 5-96
Interior Lamps
................................................ 3-1 5
Interior Plastic Components .............................. 5-87
Introduction Transfer Case (All-Wheel Drive) Inspection
...... 6-1 5
J
Jump Starting ................................................. 5-43
Key Lock Cylinders Service
.............................. 6-1 1
Keyless Entry System ....................................... 2-3
Keys
............................................................... 2-2
Lamps Exterior
...................................................... 3-1 1
Interior
....................................................... 3-1 5
Lamps On Reminder ....................................... 3-12
Lap Belt
............................................. ... 1-23
Lap-Shoulder Belt
......................... , ... 1-13
LATCH System Child Restraints
......... ...................... 1-43 LATCH System (cont.)
Securing a Child Restraint Designed for the
LATCH System
........................................ 1-46
Leather
......................................................... 5-87
Leaving Your Vehicle With the
Engine Running
.............. ......... 2-24
Light Air Bag
Off ................................. ......... 3-28
Anti-Lock Brake System Warning
................... 3-35
Battery Warning
.......................................... 3-33
Brake System Warning
................................. 3-34
Cruise Control
............................................. 3-41
Low Fuel Warning
................................... 3-42
Malfunction Indicator
................................ 3-38
Passenger Air Bag Status Indicator
............ 3-30
Safety Belt Reminder
............................... 3-26
Tow/Haul Mode
........................................... 3-41
Loading Your Vehicle
....................................... 4-45
Locks Air Bag Readiness
....................... , ........ 3-27
Locking Rear Axle
............................................ 4-8
Door ...................... .................. 2-6
Power Door
.............................................. 2-7
Loss of Control ..............., ............................ 4-15
LOW COOLANT LEVEL
............................... 3-54
Low Fuel Warning Light
................................ 3-42
Lumbar Power Controls
............................................. 1-3
.....