2004 Oldsmobile Silhouette heater

Cooling System
When you decide it is safe to lift the hood, here is what
you will see:
A. Radiator Pressure Cap
B. Electric Engine Cooling Fans
C. Coolant Recovery Tank{CAUTION:
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 recovery tank is boiling,
do not 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 is not, 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.
5-28

{CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them.
If you do, you can be burned.
Do not run the engine if there is a leak. If you
run the engine, it could lose all coolant. That
could cause an engine ®re, and you could be
burned. Get any leak ®xed 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 are not, your vehicle needs service.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty.
See ªOverheated Engine Protection Operating
Modeº in the Index for information on driving to
a safe place in an emergency.
Notice:Using coolant other than DEX-COOLžmay
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs ®rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
ž(silicate-free) coolant in your vehicle.
5-29

How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at or above the FULL COLD mark, add
a 50/50 mixture of
clean, drinkable waterand
DEX-COOLžengine coolant at the coolant recovery
tank. SeeEngine Coolant on page 5-22for more
information.
{CAUTION:
Adding only plain water to your cooling
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 would not get the overheat warning.
Your engine could catch ®re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
žcoolant.
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.
{CAUTION:
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. Do not spill coolant on a hot engine.
5-30

Fuse Usage
PASS KEY PASS-Key
žIII System
PWR LOCK Power Door Locks
HTD MIRROR Heated Mirrors
RH T/LP Not Used
RR FOG LP Not Used
CIGAR/DIC/
APO FRTCigarette Lighter, DIC, Front
Auxiliary Power Outlets, Data Link
T/SIG Turn Signal Switch
PWR QTR
VENTInterior Lamp and Multifunction
Switch (Power Vent Switch),
Auto Level
FRT/WPR/
WSHRWindshield Wiper/Washer Motor
and Switch
HAZARD Hazard Switch
RR PWR SCKTRear Electric Accessory Plug
Housing
DRLDaytime Running Lamp Control
Module
LH T/LP Not Used
Fuse Usage
RR DEFOG/
HTD MIRRORRear Window Defogger Relay,
Heated Mirrors
ON STAR OnStar
ž
SIR In¯atable Restraint Control Module
HVAC
BLOWERHeater-A/C Control
MALL
CLUSTERInstrument Cluster, Body Control
Module, Electronic Level Control
(ELC) Sensor and Relay, Theft,
Door Ajar
STOP LAMP Stoplamp Switch
CLUSTER
BATTModule/Electronic Brake Control
Module/Electronic Brake Traction
Control Module (EBCM/EBTCM)
ENHANCED
EVAP/AWDEvaporative Emissions (EVAP)
Canister Vent Solenoid Valve,
All-Wheel Drive (AWD)
Blank Not Used
ELC/TRAILERELC Air Compressor and ELC
Height Sensor, Trailer Harness
CTSY LAMP Courtesy Lamp
5-103

Fuse Usage
IGN 1BCM, Electronic Brake Control
Indicator Lamp Driver Module,
Instrument Panel Cluster, Rear Side
Door Actuator Control Module,
Rear Windows, Rear Parking Aid
RR HVAC
TEMP CONTRear HVAC-A/C Control
RR WPR/
WSHRRear Window Wiper Motor,
Rear Window Wiper/Washer and
Multifunction Switch (Rear Window
Wiper/Washer Switch)
LH HEADLP
LOWNot Used
LH HEADLP
HIGHNot Used
Blank Not Used
Blank Not Used
Blank Not Used
RAP RELAYRetained Accessory Power (RAP)
Relay
Blank Not UsedFuse Usage
HVAC/DIC/DRL/
HEATED SEATAir Inlet Actuator, DIC Display, DRL
Control Module, Heater-A/C Control,
Temperature Door Actuator (Front)
and Rear Window Defogger Relay
BCM PRGRAM BCM Programming
RH HEAD
LP LOWNot Used
RH HEAD
LP HIGHNot Used
PCM/ABSIGN MAIN Relay and PCM,
Electronic Brake Control Module
Circuit Breaker Usage
HEADLAMPDaytime Running Lamps (DRL)
Control Module, Headlamp and
Instrument Panel Dimmer Switch
PWR SLD DR Power Sliding Door
PWR WDO Front Power Windows
PWR/HEATED
SEAT PSDSix-Way Power Seats and Rear
Side Door Actuator Motor
FRT HVAC
HI BLWRBlower Motor Hi Speed Relay
Module
5-104

Fuse Usage
5Ignition Switch to Fuses (Instrument
Panel): ABS/TCS Ignition, Cruise,
DRL, Electronic PRNDL, Ignition 1,
AWD, PSD, Air Bag, Turn Signal
and Powertrain Control Module
[IGN MAIN Relay (Underhood Fuse
Block: A/C Clutch, Electronic
Ignition, Ignition 1-U/H, INJ, TCC)]
6 Coolant Fans
7Fuses (Instrument Panel): ABS
Module Battery, Cigarette Lighter,
Courtesy Lamps, Front Power
Socket, Power Locks, Power Mirrors
and Right Rear Power Socket,
OnStar, RAP
8Ignition Switch to Fuses (I/P): Body
Control Module Program, Front
Comfort Controls Low/Medium
Blower, Front Wiper/Washer,
HVAC/DRL, MALL/Radio/DIC,
Power Quarter Vent, Rear HVAC,
Rear Wiper/Washer. SWC
Accessory and Power Window
Circuit Breaker, RAP
18 Fuel Injectors 1±6
19 Not UsedFuse Usage
20 Not Used
21Evaporative Emissions (EVAP)
Canister Purge Valve, Heated
Oxygen Sensors 1 and 2, Mass Air
Flow (MAF) Sensor
22 Not Used
23 Not Used
24 Not Used
25 Ignition Control Module (ICM)
26 Not Used
27Transaxle Range Switch to
Back-up Lamps
28A/C Clutch Relay to A/C
Compressor Clutch Oil
29Driver Information Display, Heater
A/C Control, Radio, Rear (LH and
RH) Side Door Actuator Control
Motor, Remote Control Door Lock
Receiver (RCDLR), Security
Indicator Lamp and Theft-Deterrent
Shock Sensor
30 Generator
5-106

Content Theft-Deterrent System,
Arming and Disarming..................................2-67
Control of a Vehicle.......................................... 4-5
Convenience Center........................................2-58
Convenience Net............................................2-56
Coolant
Engine Temperature Gage............................3-48
Engine Temperature Warning Message...........3-54
Heater, Engine............................................2-33
Cooling System..............................................5-28
Cruise Control................................................3-12
Cupholder(s)..................................................2-52
Current and Past Model Order Forms................7-13
Customer Assistance Information
Courtesy Transportation.................................. 7-8
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-6
Reporting Safety Defects to
General Motors........................................7-12
Reporting Safety Defects to the
Canadian Government..............................7-12
Reporting Safety Defects to the
United States Government.........................7-11Customer Assistance Information (cont.)
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-12
D
Daytime Running Lamps/Automatic
Headlamp System.......................................3-17
Defensive Driving............................................. 4-2
Defogging and Defrosting.........................3-29, 3-33
Delayed Illumination and
Exit Lighting................................................2-61
Delayed Lighting.............................................3-20
Dinghy Towing................................................4-32
Directing the Air¯ow................................3-35, 3-37
Disarming with the Remote Keyless
Entry Transmitter.........................................2-27
Disarming with Your Key..................................2-27
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-32
Dome Lamp...................................................3-19
Door
Ajar Warning Message.................................3-57
Dual Sliding Doors.......................................2-13
Last Door Closed Locking.............................2-12
Locks.......................................................... 2-9
Power Door Locks.......................................2-11
4

Door (cont.)
Power Sliding Door......................................2-17
Power Sliding Warning Message....................3-57
Programmable Automatic Door Locks.............2-12
Driver
Position, Safety Belt.....................................1-28
Driver Information Center (DIC).........................3-60
Driving
At Night.....................................................4-15
City...........................................................4-20
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-21
Hill and Mountain Roads..............................4-24
In Rain and on Wet Roads...........................4-17
Winter........................................................4-26
Driving On Grades..........................................4-45
Driving on Snow or Ice....................................4-27
Driving Through Deep Standing Water...............4-19
Driving Through Flowing Water.........................4-19
Driving with a Trailer.......................................4-43
Dual Climate Control System............................3-31
Dual Trip Odometers.......................................3-43
DVD
Cleaning the Video Screen..........................3-100
Cleaning Your DVD Player..........................3-100
Distortion....................................................3-98
Entertainment System..................................3-85
DVD Player....................................................3-89E
Eight-Way Power Seats..................................... 1-4
Electrical System
Add-On Equipment.....................................5-100
Fuses and Circuit Breakers.........................5-101
Headlamp Wiring.......................................5-101
Power Windows and Other Power
Options.................................................5-101
Windshield Wiper Fuses.............................5-101
Emissions Inspection and Maintenance
Programs...................................................3-51
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-41
Change Oil Message...................................3-56
Check and Service Engine Soon Light............3-49
Coolant......................................................5-22
Coolant Heater............................................2-33
Coolant Temperature Gage...........................3-48
Coolant Temperature Warning Message..........3-54
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-12
Exhaust.....................................................2-42
Oil .............................................................5-13
Overheating................................................5-25
Starting......................................................2-32
Engine Oil Additives........................................5-16
5