heater GMC SIERRA DENALI 2003 User Guide

I
Heater and radiator hoses, and other engine
parts, can be very hot. Don’t touch them.
If you do, you can be burned.
Don’t run the engine if there
is a leak. If you
run the engine,
it could lose all coolant.
That could cause an engine fire, and you could
be burned. Get any leak fixed before you drive
the vehicle.
If there seems to be no leak, start the engine again.
The engine cooling fan speed should increase when idle
speed
is doubled by pushing the accelerator pedal
down.
If it doesn’t, your vehicle needs service. Turn off
the engine.
Notice: Engine damage from running your engine
without coolant isn’t covered by your warranty.
See “Overheated Engine Protection Operating
Mode”
in the Index for information on driving to
a safe place in an emergency.
Notice: When adding coolant, it is important that
you use only
DEX-COOL@ (silicate-free) coolant.
If coolant other than DEX-COOL@
is added to
the system, premature engine, heater core or
radiator corrosion may result.
In addition, the engine
coolant will require change sooner
- at 30,000 miles
(50 000 km) or 24 months, whichever occurs first.
Damage caused by the use of coolant other
than DEX-COOL@ is not covered by your new
vehicle warranty.
5-31

Adding ~.ly p.-.n water to your coa....g system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the
proper coolant mixture will. Your vehicle’s
coolant warning system
is set for the proper
coolant mixture.
With plain water or the wrong
mixture, your engine could get too hot
but you
wouldn’t get the overheat warning. Your engine could catch fire and you or others could be
burned. Use a
50/50 mixture of clean, drinkable i i water and DEX COOL@ coolant.
Notice: In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
I
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and
it will burn if the engine parts are hot
enough. Don’t spill coolant on a hot engine.
5-33

Compact Disc Changer Errors .......................... 3-80
Compact Disc Messages
.................................. 3-76
Compass Calibration
....................................... 2-30
Compass Variance
.......................................... 2-29
Content Theft-Deferrent
.................................... 2-1 3
Control of a Vehicle
.......................................... 4-5
Coolant
Engine Temperature Gage
............................ 3-36
Heater, Engine
............................................ 2-17
Surge Tank Pressure Cap
............................. 5-27
Cooling System
.............................................. 5-30
Cruise Control
.................................................. 3-8
Cruise Control Light
........................................ 3-41
Cupholder(s)
............................................... 2-39
Current and Past Model Order Forms
..... .... 7-11
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 ...... 7-9
Reporting Safety Defects to the Canadian
Government
.............................................. 7-9
Reporting Safety Defects to the United States
Government
.............................................. 7-9
Roadside Assistance Program
......................... 7-5
Service Publications Ordering Information
........ 7-1 0
D
DAB Radio .................................................... 3-82
Defensive Driving
............................................. 4-2
Defogging and Defrosting
................................. 3-22
Doing Your Own Service Work
........................... 5-4
Dome Lamps
................................................. 3-16
Door
Daytime Running Lamps
.................................. 3-13
Locks
.......................................................... 2-6
Power Door Locks
......................................... 2-7
Rear Doors
.................................................. 2-8
Position, Safety Belt
..................................... 1-13
Driver Information Center (DIC)
......................... 3-43
Driver
DRIVER DOOR AJAR
..................................... 3-60
DIC Operation and Displays
.......................... 3-43
DIC Warnings and Messages
........................ 3-53
Driving At Night
..................................................... 4-29
City
........................................................... 4-33
Defensive
..................................................... 4-2
Drunken
....................................................... 4-2
Freeway
..................................................... 4-34
Hill and Mountain Roads
.............................. 4-36
In Rain and on Wet Roads
........................... 4-30
Winter
........................................................ 4-38
Driving On Grades
.......................................... 4-58
Driving on Snow or Ice
.................................... 4-39
Driving Through Deep Standing Water
............... 4-32
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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

Taillamps ....................................................... 5-58
Temperature and Compass Display
.................... 2-28
Testing the Alarm
............................................ 2-14
Theft.Deterrent. Radio
..................................... 3-81
Theft-Deterrent Systems
................................... 2-1 3
Content Theft-Deterrent
................................ 2-1 3
Passlock@
................................................... 2-1 4
Tilt Wheel
........................................................ 3-4
Tire Inflation Check
......................................... 6-10
Tires
..................................................... 5.61. 5-90
Buying New Tires
........................................ 5-64
Chains
....................................................... 5-68
Changing a Flat Tire
.................................... 5-69
If a Tire Goes Flat ....................................... 5-68
Inflation
- Tire Pressure ............................... 5-62
Inspection and Rotation
................................ 5-62
Spare Tire
.................................................. 5-85
Uniform Tire Quality Grading
......................... 5-65
Wheel Alignment and Tire Balance
................. 5-67
Wheel Replacement
..................................... 5-67
When It
Is Time for New Tires ...................... 5-64
To Use the Engine Coolant Heater .................... 2-18
Tonneau Cover
............................................ 2-39
Top of the Instrument Panel
.......... ........ 5-87
Top Strap
...................................................... 1-40
Top Strap Anchor Location
............................... 1-41
Torque Lock
................................................... 2-25
Total Weight on Your Vehicle’s Tires
.................. 4-55 Tow/Haul
Mode
............................................... 2-21
Tow/Haul Mode Light
....................................... 3-41
Towing Recreational Vehicle
..................................... 4-45
Towing a Trailer
.......................................... 4-51
Your Vehicle
............................................... 4-45
TRACTION ACTIVE
.................................... 3-58
Trailer Recommendations
....................................... 4-50
Trailer Brakes
................................................. 4-56
Trailer Wiring Harness
..................................... 4-60
Transfer Case
................................................ 5-49
Transmission Fluid, Automatic
.......................... ......... 5-21
Temperature Gage
....................................... 3-36
TRANSMISSION HOT
..................................... 3-59
Transmission Operation, Automatic
.................... 2-18
Transmission, Transaxle, Transfer Case Unit Repair Manual
............................................ 7-10
Transportation Options
...................................... 7-7
Trip Information Button
....................... ..... 3-44
Trip Odometer
................................................ 3-26
Truck-Camper Loading Information
.................... 4-48
Turn and Lane Change Signals
.......................... 3-5
Turn SignaVMultifunction Lever ........................... 3-5
Turn Signals When Towing a Trailer
.................. 4-57
Two-Tiered Loading
......................................... 4-47
TURN
SIGNAL ON
......................................... 3-56
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