2003 Oldsmobile Alero heater

An electric engine cooling fan under the hood
can start up even when the engine is not
running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
If the coolant inside the coolant surge tank is boiling,
don’t do anything else until it cools down. The vehicle
should be parked on a level surface.
The coolant level should be at or above the
FULL
COLD mark. If it isn’t, you may have a leak at the
pressure cap or in the radiator hoses, heater hoses,
radiator, water pump or somewhere else in the cooling
system.
5-29

Heater a _.__ . -ldiatoL -.oses, 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, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running.
If they aren’t, your vehicle needs service.
Notice: Engine damage from running your engine
without coolant isn’t covered by your warranty.
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.
How to Add Coolant to the Coolant
Surge Tank
Notice: This vehicle has a specific coolant fill
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
If you haven’t found a problem yet, check to see
if
coolant is visible in the surge tank. If coolant is visible
but the coolant level isn’t at or above the
FULL
COLD mark, add a 50/50 mixture of clean, drinkable
water
and DEX-COOL@ coolant at the coolant
surge tank, but be sure the cooling system, including
the coolant surge tank pressure cap,
is cool before you
do it. See Engine Coolant on page 5-23 for more
information.
5-30

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 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. 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.
5-32

Checking Engine Oil ........................................ 5-15
Checking Things Under the Hood
....................... 5-9
Checking Your Restraint Systems
...................... 1-60
Chemical Paint Spotting
................................... 5-78
Child Restraints Child Restraint Systems
............................... 1-38
Infants and Young Children
........................... 1-34
Lower Anchorages and Top Tethers for Children (LATCH System)
.......................... 1-43
Older Children
............................................. 1-32
Securing a Child Restraint Designed for the
LATCH System
........................................ 1-45
Securing a Child Restraint in a Center Rear
Seat Position
........................................... 1-48
Securing a Child Restraint in a Rear Outside
Seat
Position ........................................... 1=45
Securing a Child Restraint in the Right Front
Seat Position
........................................... 1-50
Top Strap
................................................... 1-41
Where to Put the Restraint
........................... 1-41
Chime Level Adjustment
.................................. 3-67
wyC4i t;llt; Llyr ilGl 4- IO
Cleaning Inside of Your Vehicle
........................... 5-72
Outside of Your Vehicle
................................ 5-75
Underbody Maintenance
............................... 5-78
Weatherstrips
.............................................. 5-75
Cleaning Exterior LampdLenses ....................... 5-76
Top Strap Anchor Location ............................ 1-42
P: -.--- IL- I :-.LA-- A +n .............................................
Climate Control System ................................... 3-19
Outlet Adjustment
........................................ 3-22
Compact Disc Messages
................. 3-42, 3-52, 3-64
Compact Spare Tire
........................................ 5-71
Control of a Vehicle
.......................................... 4-5
Coolant Engine Temperature Gage
............................ 3-31
Heater, Engine
............................................ 2-20
Low Warning Light
....................................... 3-31
Cooling System
.............................................. 5-28
Cruise Control
................................................ 3-10
Cruise Control Light
........................................ 3-36
Current and Past Model Order Forms
................ 7-11
Customer Assistance Information
Courtesy Transportation
.........
Customer Assistance for Text
Telephone (TTY) Users
............................... 7-3
Customer Assistance Offices
........................... 7-3
Customer Satisfaction Procedure
..................... 7-2
GM Mobility Proaram 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 Gzvernment .... ....... 7-9
Clutch, Hydraulic ............................................. 5-22
Cupholder(s)
.................................................. 2-34
.............. 7-7
3

Customer Assistance Information (cont.)
Roadside Assistance Program
......................... 7-5
Service Publications Ordering Information
........ 7-1 0
Customizing the Automatic Door Locks ............. 2-9
D
DAB Radio ................................................ 3-65
Daytime Running Lamps (DRL)
......................... 3-14
Defensive Driving
............................................. 4-2
Defogging and Defrosting
................................. 3-20
Delayed Headlamps
........................................ 3-1 5
Delayed Locking ............................................... 2-8
Dinghy Towing
...................... .................. 4-32
Dolly Towing
........................ .............. 4-33
Dome Lamp
......................... .................. 3-16
Door Delayed Locking
................... ................ 2-8
Power Door Locks
......................................... 2-8
Programmable Automatic Door Locks
............... 2-8
Rear Security Locks
..................................... 2-10
Position, Safety Belt
..................................... 1-15
Six-Way Power Seat
...................................... 1-3
At Night
..................................................... 4-15
City
........................................................... 4-20
Defensive
..................................................... 4-2
Doing
Your Own Service Work
............... ..... 5-4
Locks
...................................................... 2-7
Driver
Driving Driving
(cont.)
Drunken
....................................................... 4-2
Freeway
..................................................... 4-21
Hill and Mountain Roads
.............................. 4-23
In Rain and on Wet Roads
........................... 4-17
Winter
........................................................ 4-25
Driving On Grades
.......................................... 4-41
Driving on Snow or Ice
.................................... 4-26
Driving Through Deep Standing Water
............... 4-19
Driving Through Flowing Water
......................... 4-19
Driving with a Trailer
....................................... 4-40
E
Easy Entry Seat ............................................... 1-6
Electrical System
Add-on Equipment
...................................... 5-81
Fuses and Circuit Breakers
........................... 5-81
Windshield Wiper Fuses
............................... 5-81
Emergency Trunk Release Handle
..................... 2-13
Emissions Inspection and Maintenance
Programs
................................................... 3-33
Engine
Air Cleaner/Filter
......................................... 5-21
Battery
....................................................... 5-41
Change Engine Oil Light
............................... 3-35
Coolant
...................................................... 5-23
Coolant Heater
............................................ 2-20
Power Windows and Other Power Options
...... 5-81
Check and Service Engine Soon Light
............ 3-31
4

Tires (cont.) Wheel Alignment and Tire Balance
................. 5-58
Wheel Replacement
..................................... 5-59
When It
Is Time for New Tires ...................... 5-56
To Use the Engine Coolant Heater
.................... 2-21
Top of the Instrument Panel
............................. 5-74
Top Strap
...................................................... 1-41
Top Strap Anchor Location
............................... 1-42
Torque Lock
................................................... 2-28
Total Weight on Your Vehicle’s Tires
.................. 4-39
Towing Recreational Vehicle
..................................... 4-31
Towing a Trailer
.......................................... 4-36
Your Vehicle
............................................... 4-31
Traction Enhmced Traction Systerr; Active Light
........... 3-30
Enhanced Traction System Warning Light
........ 3-29
Enhanced
Traction System (ETS)
.................... 4-9
Trailer Brakes
................................................. 4-39
Transaxle Fluid, Automatic
........................................... 5-22
Fluid, Manual
.............................................. 5-22 T - - .. I - n- -.--a: - .- A . .I -.-- -L:- I I dl 13dAlt: Upel dllUl I, fiUlUl1 ldllb 6-66 A nA .........................
Transaxle Operation, Manual ............................ 2-25
Transmission Up-Shift Light
.............................................. 3-28
Transmission, Transaxle, Transfer Case Unit
Repair Manual
........................................ 7-10
Transportation Options
...................................... 7-7
Trap-Resistant Trunk Kit
................................... 2-1 3 Trip Odometer
.......... ........................... 3-25
Trunk
............................................................ 2-11
Turn and Lane-Change Signals
.......................... 3-8
Turn Signal/Multifunction Lever
........................... 3-7
Turn Signals When Towing a Trailer
.................. 4-41
Trunk Lamp
................................................... 3-16
Underbody Flushing Service
............................. 6-12
Understanding Radio Reception
........................ 3-65
Uniform Tire Quality Grading
............................ 5-57
United States
................................................... 7-4
Up-Shift Light
................................................. 3-28
Used Replacement Wheels
.............................. 5-60
using Cleaner on Fabric
.................................. 5-73
v
Vehicle
Control
........................... ..................... 4-5
Damage Warnings
........................................... iv
Loading
...................................................... 4-34
Service Soon Light
...................................... 3-36
Parking
Your
............................................... 2-29
Symbols
......................................................... iv
Vehicle Identification
Number (VIN)
............................................. 5-80
Service Parts Identification Label
................... 5-80
Vehicle Storage
.............................................. 5-41
13