engine overheat CHEVROLET S10 1999 2.G User Guide

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5-14
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 the
ADD 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.

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5-32
If You're Stuck: In Sand, Mud,
Ice or Snow
In order to free your vehicle when it is stuck, you will
need to spin the wheels, but you don't want to spin
your wheels too fast. The method known as ªrockingº
can help you get out when you're stuck, but you must
use caution.
CAUTION:
If you let your tires spin at high speed, they can
explode, and you or others could be injured. And,
the transmission or other parts of the vehicle can
overheat. That could cause an engine
compartment fire or other damage. When you're
stuck, spin the wheels as little as possible. Don't
spin the wheels above 35 mph (55 km/h) as shown
on the speedometer.
NOTICE:
Spinning your wheels can destroy parts of your
vehicle as well as the tires. If you spin the wheels
too fast while shifting your transmission back
and forth, you can destroy your transmission.
For information about using tire chains on your vehicle,
see ªTire Chainsº in the Index.

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6-25
When the differential is cold, add enough lubricant to
raise the level to 1/2 inch (12 mm) below the filler
plug hole.
When the differential is at operating temperature
(warm), add enough lubricant to raise the level to the
bottom of the filler plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See ªRecommended Fluids and
Lubricantsº in the Index.Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi (105 kPa)
pressure
-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up with the overflow tube on the radiator
filler neck.

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6-26
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
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 lights 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.

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6-27 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.

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9-7
Night Vision 4-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Maintenance Replacement Parts 6-70 . . . . . . . . . . . . .
Odometer 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Road Driving 4-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Road Driving with Your Four-Wheel-Drive Vehicle 4-14
Off-Road Recovery 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil, Engine 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Service and Owner Publications 8-12, 8-13 . . . . . . .
Outside Mirror
Convex 2
-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heated 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Adjust 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Remote Control 2-45 . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating Engine 5-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-42 . . . . . . . . . . . . . . . . . . . . . . .
Owner Publications, Ordering 8-12, 8-13 . . . . . . . . . . . . . . . .
Paint Spotting, Chemical 6-58 . . . . . . . . . . . . . . . . . . . . . . . .
Park
Automatic Transmission 2
-18 . . . . . . . . . . . . . . . . . . . . . . .
Shifting Into 2-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting Out of 2-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking
At Night 2
-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Mechanism Check 7-45 . . . . . . . . . . . . . . . . . . . . . . .
Lots 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Hills with a Trailer 4-53 . . . . . . . . . . . . . . . . . . . . . . . . .
Over Things That Burn 2-30 . . . . . . . . . . . . . . . . . . . . . . . .
With a Trailer 4-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Vehicle, Manual Transmission 2-30 . . . . . . . . . . . . . .
Parts, Replacement 6-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Passing 4
-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passlock
2-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Payload 4-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-46 . . . . . . . . . . . . . . . . . .
Pickup Conversion to Chassis Cab 4-45 . . . . . . . . . . . . . . . . .
Power
Accessory Outlets 2
-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option Fuses 6-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 2-45 . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-19 . . . . . . . . . . . . . . . . . . . .
Problems on the Road 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Publications, Service and Owner 8-12, 8-13 . . . . . . . . . . . . . .
Radiator 5-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Pressure Cap 6-25 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Reception 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radios
AM
-FM Stereo 3-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Care 3-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Player 3-8, 3-11 . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Player 3-15 . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Player Care 3-25 . . . . . . . . . . . . . . . . . . . . . .
Remote Cassette Tape Player 3-19 . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-21 . . . . . . . . . . . . . . . . . . . . . . . .
Rain, Driving 4-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RAP 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear
Axle 6
-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .