Page 230 of 348

How to Add Coolant to the Coolant
Surge Tank
{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.
Notice:This vehicle has a speci c coolant ll
procedure. Failure to follow this procedure could
cause the engine to overheat and be severely
damaged.
{CAUTION:
An electric engine cooling fan under the hood can
start up even when the engine is not running and
can cause injury. Keep hands, clothing, and tools
away from any underhood electric fan.
{CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They are
under pressure, and if you turn the surge tank
pressure cap — even a little — they can come out
at high speed. Never turn the cap when the cooling
system, including the surge tank pressure cap, is
hot. Wait for the cooling system and surge tank
pressure cap to cool if you ever have to turn the
pressure cap.
If no coolant is visible in the surge tank, add coolant as
follows:
1. Remove the coolant surge tank pressure cap when
the cooling system, including the coolant surge tank
pressure cap and upper radiator hose, is no longer
hot. Turn the pressure cap slowly counterclockwise
about two or two and one-half turns.
If you hear a hiss, wait for that to stop. This will
allow any pressure still left to be vented out
the discharge hose.
5-26
Page 232 of 348

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 than
the Maximum mark, add more of the proper mixture
to the coolant surge tank until the level reaches
the mark.
5. Replace the pressure cap. Be sure the pressure
cap is hand-tight and fully seated.
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.Engine Overheating
The vehicle has an indicator to warn of the engine
overheating.
There is a coolant temperature gage on the instrument
panel cluster. SeeEngine Coolant Temperature
Gage on page 3-30.
You may decide not to lift the hood when this warning
appears, but instead get service help right away.
SeeRoadside Assistance Program on page 7-7.
If you do decide to lift the hood, make sure the vehicle
is parked on a level surface.
Then check to see if the engine cooling fan is running.
If the engine is overheating, the fan should be running.
If it is not, do not continue to run the engine and have the
vehicle serviced.
Notice:Engine damage from running the engine
without coolant is not covered by the warranty.
Notice:If the engine catches re because of being
driven with no coolant, your vehicle can be badly
damaged. The costly repairs would not be covered
by the vehicle warranty.
5-28
Page 273 of 348

Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-70for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on the vehicle is dangerous.
You cannot know how it has been used or how
far it has been driven. It could fail suddenly and
cause a crash. If you have to replace a wheel,
use a new GM original equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class “S” type chains
that are the proper size for your tires. Install them on
the front tires and tighten them as tightly as possible
with the ends securely fastened. Drive slowly and
follow the chain manufacturer’s instructions. If you
can hear the chains contacting your vehicle, stop and
retighten them. If the contact continues, slow down
until it stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.
5-69
Page 295 of 348
Fuses Usage
FAN HI Cooling Fan HI Relay
ABS-1 EBCM
ABS-2 EBCM
SJB BATT Instrument Panel Fuse BlockFuses Usage
ACC/IG1 IGN1 Relay
IG2/ST IGN2 Relay, Starter Relay
ACC/RAP Instrument Panel Fuse Block
P/WINDOW-2 Power Window Switch
5-91
Page 296 of 348

Fuses Usage
P/W
WINDOW-1Power Window Switch
FAN LOW Cooling Fan LOW Relay
A/CON A/C Compressor Relay
PKLP LHTail Lamp (LH), Side Marker (LH),
Turn Signal & Parking Lamp (LH),
License Lamp
PKLP RHTail Lamp (RH), Side Marker (RH),
Turn Signal & Parking Lamp (RH),
License Lamp, I/P Fuse Block
ECU ECM, TCM
FRT FOG Front Fog Lamp Relay
F/PUMP Fuel Pump Relay
HAZARD Hazard Switch, Hood Contact Switch
HDLP HI LH Head Lamp (LH), IPC
HDLP HI RH Head Lamp (RH)
IPC IPC
HDLP LO LH Head Lamp (LH), I/P Fuse Block
HDLP LO RH Head Lamp (RH)
EMS-1 ECM, Injector
DLIS Ignition Switch
EMS-2EVAP Canister Purge Solenoid,
Thermostat Heater, HO2S,
MAF Sensor
SPARE Not UsedRelays Usage
F/PUMP
RELAYFuel Pump
STARTER
RELAYStarter
PARK LAMP
RELAYPark Lamp
FRONT FOG
RELAYFog Lamp
HDLP HIGH
RELAYHead Lamp High
HDLP LOW
RELAYHead Lamp Low
FAN HIGH
RELAYCooling Fan High
FAN LOW
RELAYCooling Fan Low
A/CON RELAY Air Conditioner
ENGINE MAIN
RELAYMain Power
ACC/RAP
RELAYI/P Fuse Block
IGN-2 RELAY Ignition
Misc. Usage
FUSE PULLER Fuse Puller
5-92
Page 297 of 348