2003 GMC YUKON DENALI coolant temperature

4. 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
FULL COLD mark.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
Engine Fan Noise
Your vehicle has a clutched engine cooling fan. When
the clutch
is engaged, the fan spins faster to provide
more air
tu cool the engine. In most everyday driving
conditions, the fan is spinning slower and the clutch is
not fully engaged. This improves fuel economy and
reduces fan noise. Under heavy vehicle loading, trailer
towing and/or high outside temperatures, the fan
speed increases as the clutch more fully engages.
So
you may hear an increase in fan noise. This is
normal and should not be mistaken as the transmission
slipping or making extra shifts. It is merely the cooling
system functioning properly. The fan will slow down
when additional cooling is not required and the clutch
disengages.
You may also hear this fan noise when you start the
engine.
It will go away as the fan clutch partially
disengages.
5-33

Comfort Controls ............................................. 3-1 9
Compact Disc Messages
.................................. 3-71
Compass Calibration
....................................... 2-33
Compass Variance
.......................................... 2-32
Content Theft-Deterrent
......................... .... 2-16
Control of a Vehicle
......................... ......... 4-5
Convenience Net ............................................ 2-44
Coolant Engine Temperature Gage
............................ 3-36
Heater, Engine
............................................ 2-21
Surge Tank Pressure Cap
............................. 5-25
Cooling System
.............................................. 5-28
Cruise Control
................................................ 3-10
Cruise Control Light
......................... ....... 3-41
Cupholder(s)
....................................... .... 2-42
Current and Past Model Order Forms
......... 7-1 1
Customer Assistance Information Courtesy Transportation
.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users
....................................................... 7-4
Customer Assistance
Off ices ........................... 7-4
Customer Satisfaction Procedure
..................... 7-2
GM Mobility Program for Persons with
Disabilities
................................................ 7-5
Reporting Safety Defects
to General Motors .... 7-10
Reporting Safety Defects to the Canadian Government
.............................................. 7-9
Reporting Safety Defects
to the United States
Government
.............................................. 7-9
Compact
Disc Changer Errors
.......................... 3-85 Customer Assistance Information
(cont.)
Roadside Assistance Program ......................... 7-5
Service Publications Ordering Information
.... 7-10
Daytime Running Lamps
.................................. 3-14
Defensive Driving
............................................. 4-2
Defogging and Defrosting
................................. 3-24
Delayed Locking
............................................... 2-9
Doing Your Own Service Work
........................... 5-3
Dome Lamps
................................................. 3-16
Door
Delayed Locking
........................................... 2-9
Power Door Locks
......................................... 2-9
Programmable Automatic Door Locks
............. 2-10
Rear Door Security Locks
............................. 2-12
Driver Position, Safety Belt
..................................... 1-30
DRIVER DOOR AJAR
..................................... 3-56
Driver Information Center (DIC)
......................... 3-43
DIC Operation and Displays
.......................... 3-43
DIC Warnings and Messages
........................ 3-52
At Night
..................................................... 4-28
City
........................................................... 4-32
Defensive
..................................................... 4-2
Drunken
....................................................... 4-2
Locks
.......................................................... 2-8
Driving
4

Driving (cont.)
Freeway
....................... ............ 4-33
Hill and Mountain Roads
..., ................... 4-35
In Rain and on Wet Roads
....................... 4-29
winter ........................................................ 4-37
Driving On Grades .......................................... 4-54
Driving on Snow or Ice
.................................... 4-38
Driving Through Deep Standing Water
............... 4-31
Driving Through Flowing Water
......................... 4-31
DVD Driving with a Trailer
....................................... 4-53
Care
of Your ............................................... 3-88
Care
of Your DVD Player ............................. 3-89
Cleaning the Video Screen
........................... 3-89
Distortion .................................................... 3-86
Rear Seat Entertainment System
................... 3-72
DVD Player
.................................................... 3-72 Engine
Air Cleaner/Filter
......................................... 5-17
Battery
....................................................... 5-39
Check and Service Engine Soon Light
............ 3-38
Coolant ...................................................... 5-22
Coolant Heater
............................................ 2-21
Coolant Temperature Gage
........................... 3-36
Cooling System Inspection
............................ 6-14
Engine Compartment Overview
...................... 5-12
Exhaust
..................................................... 2-29
Fan Noise
.................................................. 5-33
Oil
............................................................. 5-13
Overheating
................................................ 5-25
Starting
...................................................... 2-19
Engine Air Cleaner Filter Restriction
Indicator Check
........................................... 6-11
ENGINE COOLANT HOT
................................. 3-53
Engine Coolant Level Check
............................. 6-10
Engine Oil Additives ........................................ 5-16
Engine Oil Level Check
................................... 6-10
Entering or Exiting the Third Row Seats
.............. 1-7
Engine
Oil and Chassis Lubrication Scheduled
Maintenance
................................................. 6-5
ENGINE OVERHEATED
.................................. 3-53
Entertainment System Cleaning the Video Screen
........................... 3-89
DVD Distortion
............................................ 3-86
Entry Lighting
................................................. 3-16
Erasing HomeLink@ Buttons
.............................. 2-41
E
Easy Exit Seat ............................................... 2-48
Electrical System
............................................ 5-87
Add-on Equipment
...................................... 5-87
Fuses and Circuit Breakers
........................... 5-87
Power Windows and Other Power Options
...... 5-87
Windshield Wiper Fuses
............................... 5-87
Electrochromic Mirror Operation
................ 2-32
Emissions Inspection and Maintenance
Programs
....................................... .... 3-40
5

Exit Lighting ........................................ 3-16
Extender, Safety Belt
....................................... 1-47
Exterior Lamps
......................... ~ ~ ................ 3-1 3
FabricKarpet
...
Engine Air Cleaner ..............................
Finding a P TY Station (RDS and XMTM) .....
Filter
Finding a Station
....................................
F
....
Finish Care
Finish Damage
................................
Fixed Mast Antenna .........................
Flash-to-Pass ...................................
Flat Tire .........................................
Flat Tire, Changing ..........................
Fluid
Automatic Transmission
.................
Power Steering ............................
Windshield Washer .......................
-
.....................................
..
.....
...
.... 5-78
.... 5-17
.... 3-63
.... 3-61
.... 5-81
.... 5-83
.... 3-89
...... 3-8
.... 5-63
............. 5-63
.......... 5-20
.......... 5-34
.......... 5-34
FM Stereo
..................................................... 3-87
Fog Lamps
.................................................... 3-1 5
Folding the Seatback ....................................... 1-17
Folding the Seatbacks
............................. 1-12, 1-22
Folding the Seatbacks (60/40 Split Bench Seat) .... 1-9
Following Distance
.......................................... 4-53
Footnotes
........................................ ......... 6-5
Front Axle
.................................... ... 5-47 Frontal
Air Bags
...................................... 1-77
Fuel
............................................................... 5-5
Additives ...................................................... 5-6
California Fuel
.............................................. 5-6
Filling Your Tank
........................................... 5-7
Fuels in Foreign Countries
.......................... 5-6
Gasoline Octane
....................................... 5-5
Gasoline Specifications .................................. 5-5
System Inspection ....................................... 6-14
Filling
a Portable Fuel Container
..................... 5-9
Gage
............................. .................... 3-42
Low Warning Light
....................................... 3-42
Fuel Information Button
.................................... 3-45
FUEL LEVEL LOW
......................................... 3-55
Fuses
Fuses and Circuit Breakers
........................... 5-87
Windshield Wiper
......................................... 5-87
G
Gage
Engine Coolant Temperature
............. .... 3-36
Fuel
...................................................... 3-42
Oil Pressure
........................................... 3-40
Speedometer
.......................................... 3-30
Tachometer
............................................. 3-30
Transmission Temperature
......................... 3-37
Voltmeter Gage ....................................... 3-34
Garage Door Opener
....................................... 2-38
6

Locks (cont.) Programmable Automatic Door Locks
............. 2-1 0
Rear Door Security Locks ............................. 2-1 2
Loss of Control ............................................... 4-15
LOW COOLANT LEVEL .................................. 3-53
Low Fuel Warning Light
................................... 3-42
Lumbar Luggage Carrier
.............................................. 2-42
Power Controls
..................................... 1-4
Maintenance. Normal Replacement Parts
............ 5-98
Maintenance Schedule At Each Fuel Fill
......................................... 6-10
At Least Once a Month
................................ 6-10
At Least Once a Year .................................. 6-1 1
At Least Twice a Year .................................. 6-10
Brake System Inspection
.............................. 6-14
Engine Cooling System Inspection
................. 6-14
Exhaust System Inspection
........................ 6-1 4
Fuel System Inspection
............. ............ 6-14
How This Section is Organized
....................... 6-3
Introduction
.................................................. 6-2
Maintenance Requirements
............................. 6-2
Part A
- Scheduled Maintenance Services ......... 6-4
Part B
- Owner Checks and Services ............. 6-10 Maintenance Schedule
(cont.)
Part C
. Periodic Maintenance Inspections ...... 6-14
Part D
. Recommended Fluids and Lubricants .... 6-15
Part E
. Maintenance Record ........................ 6-17
Scheduled MainteEance
................................. 6-5
Steering and Suspension Inspection ............... 6-14
Your Vehicle and the Environment
................... 6-2
Maintenance When Trailer Towing
..................... 4-55
Making Turns
................................................. 4-54
Malfunction Indicator Light
................................ 3-38
Matching Transmitter(s)
to Your Vehicle ............... 2-6
Message Mexico, Central America and Caribbean Islands/ Using
Your
................................................... 6-4
Memory Seat
................................................. 2-47
DIC Warnings and Messages
........................ 3-52
Countries (Except Puerto Rico and
US .
Virgin Islands) ............................................... 7-4
Mirrors Automatic Dimming Rearview with Onstar@,
Compass and Temperature Display
............. 2-31
Outside Automatic Dimming Mirror with Curb View Assist
............................................. 2-35
Outside Convex Mirror
................................. 2-34
Outside Heated Mirrors
................................ 2-35
Outside Power Mirrors
.................................. 2-34
MyGMLink.com
................................................ 7-3
9

Steering in Emergencies ................... .... 4-12
Steering Tips
.................................................. 4-1 1
Steering Wheel Controls. Audio
......................... 3-86
Stereo RCA Jacks
.......................................... 3-78
Storage Areas Center Console Storage Area
.................... 2-42
Convenience Net
..................................... 2-44
Cupholder(s)
........................................... 2-42
Glove Box
.................................................. 2-42
Luggage Carrier
.......................................... 2-42
Rear Storage Area
................................... 2-44
Storing a Flat or Spare Tire. Jack
and Tools .............................
........... 5-73
Stuck in Sand. Mud. Ice or Snow
.................. 4-41
Sun Visors ..................................................... 2-15
Sunroof
.... ...................................... 2-46
Tachometer
.................................................... 3-30
Taillamps
....................................................... 5-52
Temperature and Compass Display
.................... 2-31
Testing the Alarm
.................................... 2-17
Theft-Deterrent, Radio
.................. , ....... 3-85
Theft-Deterrent Systems
................................... 2-1 6
Content Theft-Deterrent
................................ 2-1 6
Passlock@
................................................... 2-1 7
Third Row
...................................................... 1-66
Third
Row - Lap Belt ........................ ~ ~ ....... 1-40 Throttle. Adjustable
.......................................... 2-20
Tilt Wheel
........................................................ 3-6
Tilting the
50/50 Split Bench Seat ..................... 1-13
Tire Inflation Check
......................................... 6-10
Tires
..................................................... 5-55, 5-83
Buying New Tires ........................................
5-58
Chains ....................................................... 5-62
Changing a Flat Tire
.................................... 5-63
If a Tire Goes Flat ....................................... 5-63
Inflation
-- Tire Pressure ............................... 5-55
Inspection and Rotation ................................ 5-56
Spare Tire
.................................................. 5-77
Wheel Alignment and Tire Balance
................. 5-61
Wheel Replacement
..................................... 5-61
When
It Is Time for New Tires ...................... 5-58
To Use the Engine Coolant Heater .................... 2-21
Top of the Instrument Panel
............................. 5-79
Top Strap
...................................................... 1-57
Top Strap Anchor Location
............................... 1-59
Torque Lock
................................................... 2-28
Tilting the
Full Bench Seat ............................... 1-18
Uniform Tire Quality Grading
......................... 5-59
Total Weight on Your Vehicle’s Tires
.................. 4-51
Tow/Haul Mode
............................................... 2-24
Towing Tow/Haul Mode Light
... ........................ 3-42
Recreational Vehicle
................................. 4-44
Towing a Trailer
.......................................... 4-47
Your Vehicle
............................................... 4-44
14