heater Oldsmobile Silhouette 2000 s User Guide

5-14
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.
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.
How to Add Coolant to the Coolant
Recovery Tank
If you haven't found a problem yet, 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

engine coolant at the coolant recovery tank. (See ªEngine
Coolantº in the Index for more information.)
CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like 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.

5-15
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. Don't spill coolant on a hot engine.
When the coolant in the coolant recovery tank is at or
above the FULL COLD mark, start your vehicle.
If the overheat warning continues, there's one more
thing you can try. You can add the proper coolant
mixture directly to the radiator, but be sure the cooling
system is cool before you do it.

6-22
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL
extended life coolant.
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, see ªEngine Overheatingº
in the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning messages and gages work as
they should.
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.

6-23 What to Use
Use a mixture of one-half clean, drinkable water and
one
-half DEX-COOL
coolant which won't damage
aluminum parts. If you use this coolant mixture, you
don't need to add anything else.
CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like 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:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can
freeze and crack the engine, radiator, heater core
and other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
NOTICE:
If you use the proper coolant, you don't have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.

6-61
Fuses Usage
FRT WPR/WSHR Windshield Wiper/Washer
Motor and Switch
HAZARD Turn Signal Switch
RR PWR SCKT Rear Electric Accessory
Plug Housing
DRL Daytime Running Lamp (DRL)
Control Module
LH T/LP Not Used
RR DEFOG/
HTD MIRRORSRear Window Defogger Relay,
Heated Mirrors
FRT PWR SCKT Front Electric Accessory
Plug Housing
SIR Inflatable Restraint
Control Module
HVAC BLOWER Heater
-A/C Control
MALL/
CLUSTERInstrument Cluster, BCM,
Electronic Level Control (ELC)
Sensor and Relay
STOP LAMP Stoplamp SwitchFuses Usage
CLUSTER BATT Module/Electronic Brake
Control Module/Electronic
Brake Traction Control Module
(EBCM/EBTCM)
CAN VENT SOL Evaporative Emissions (EVAP)
Canister Vent Solonoid Valve
ELC/TRAILER Electronic Level Control (ELC)
Air Compressor and ELC Relay,
Trailer Harness
CTSY LAMP BCM
IGN 1 BCM, Electronic Brake Control
Indicator Lamp Driver Module,
Instrument Panel Cluster, Rear
Side Door Actuator Control
Module, Rear Windows
RR HVAC
TEMP CONTRear HVAC-A/C Control
RR WPR/WSHR Rear Window Wiper Motor,
Rear Window Wiper/Washer and
Multifunction Switch (Rear
Window Wiper/Washer Switch)

6-62
Fuses Usage
LH HEADLP
LOWNot Used
LH HEADLP
HIGHNot Used
RAP RELAY Retained Accessory Power
(RAP) Relay
HVAC/DIC/DRL
HEATED SEATAir Inlet Actuator, Driver
Information Display, DRL
Control Module, Heater
-A/C
Control, Temperature Door
Actuator (Front) and Rear
Window Defogger Relay
BCM PRGRM BCM
RH HEADLP
LOWNot Used
RH HEADLP
HIGHNot Used
PCM/ABS IGN MAIN Relay and PCM,
Electronic Break Control ModuleUnderhood Fuse and Relay Center
This fuse and relay
center is located in the
engine compartment,
in front of the
windshield washer
fluid reservoir.
The fuses marked spare are available if a replacement
fuse is needed.
To remove the cover, turn the knob clockwise and lift up
on the remote positive (+) battery terminal cover.
Remove the cover.

6-64
Mini Relays Usage
9
-COOL FAN RH FAN 1, LH FAN 2
10
-COOL FAN 2 LH FAN 2
11
-IGN MAIN FUSES: A/C CLU, IGN 1-U/H,
INS, ELEK IGN, TCC
12
-COOL FAN 1 RH FAN 1, LH FAN 2
Micro Relays Usage
13
-A/C CLU A/C Clutch
14
-FUEL PUMP Fuel Pump
15
-F/PMP SPD
CONTNot Used
16
-HORN Horn
17
-FOG LAMP LH Fog Lamp, RH Fog Lamp,
Fog Lamp Indicator
Mini Fuse Usage
18
-INJ Fuel Injectors 1-6
19
-SPARE Not Used
20 Not UsedMini Fuse Usage
21
-IGN1-UH Evaporative Emissions (EVAP)
Canister Purge Valve, Heated
Oxygen Sensors 1 and 2, Mass
Air Flow (MAF) Sensor
22
-SPARE Not Used
23
-SPARE Not Used
24
-SPARE Not Used
25
-ELEK IGN Ignition Control Module (ICM)
26
-SPARE Not Used
27
-B/U LAMP Transaxle Range Switch to
Back
-up Lamps
28
-A/C CLU A/C CLU Relay to A/C
Compressor Clutch Oil
29
-RADIO Driver Information Display,
Heater A/C Control, Radio,
Rear Side Door Actuator Control
Motor, Remote Control Door
Lock Receiver (RCDLR),
Security Indicator Lamp and
Theft
-Deterrent Shock Sensor