1998 CHEVROLET ASTRO engine overheat

Downloaded from www.Manualslib.com manuals search engine 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.
I 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.
Checking Coolant
..
When your engine is cold, the coolant level should be at
ADD, or a little higher. When your engine is warm, the
level should be up to
FULL HOT, or a little higher.
6-27

Downloaded from www.Manualslib.com manuals search engine Adding Coolant
If you need more coolant, add the proper DEX-COOL@
coolant mixture at the coolant recovery tank.
A CAUTION:
lhrning the radiator pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
With the coolant recovery tank, you
will almost
never have
to add coolant at the radiator.
Never turn the radiator pressure cap
-- even a
little
-- when the engine and radiator are hot.
Add coolant mixture at the recovery tank, but be careful
not to spill it.
A 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.
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.
6-28

Downloaded from www.Manualslib.com manuals search engine A CAUTION:
Poorly maintained and improperly used tires
are dangerous.
Overloading your tires can cause
overheating as a result of too much friction.
You could have an air-out and a serious
accident. See “Loading Your Vehicle” in
the Index.
0 Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended pressure. Tire pressure should be checked
when your tires are cold.
Overinflated tires are more likely to be cut,
punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep tires
at the recommended pressure.
Worn, old tires can cause accidents. If your
tread
is badly worn, or if your tires have
been damaged, replace them.
Inflation -- Tire Pressure
The CertificatiodTire label, which is on the rear edge of
the driver’s door, shows the correct inflation pressures
for your tires when they’re cold. “Cold” means your
vehicle has been sitting for at least three hours or driven
no more than
1 mile (1.6 km).
NOTICE:
I
Don’t let anyone tell you that underinflation or
overinflation is all right. It’s not.
If your tires
don’t have enough air (underinflation), you can
get the following:
0 Too much flexing
0 Too much heat
0 Tire overloading
0 Bad wear
Bad handling
Bad fuel economy.
I
NOTICE: (Continued)
6-43

Downloaded from www.Manualslib.com manuals search engine Electrical System
Add-on Electrical Equipment
I NOTICE:
Don’t add anything electrical to your vehicle
unless you check with your dealer first. Some
electrical equipment can damage your vehicle
and the damage wouldn’t be covered by your warranty. Some add-on electrical equipment can
keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see “Servicing
Your Air Bag-Equipped Vehicle” in the Index.
Headlamp Wiring
The headlamp wiring is protected by a circuit breaker in
the lamp switch. An electrical overload will cause the
lamps to go on and off, or in some cases to remain off. If
this happens, have your headlamp wiring checked
right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools. If
the overload is caused by some electrical problem and
not snow, etc., be sure to get it fixed.
Power Windows and Other Power Options
Circuit breakers in the fuse panel protect the power
windows and other power accessories. When the current
load is
too heavy, the circuit breaker opens and closes,
protecting the circuit until the problem is fixed or
goes away.
6-60

Downloaded from www.Manualslib.com manuals search engine Cooling System .................. ... 5-15
Customer Assistance for Text Telephone Users ......... 8-4
Courtesy Transportation
......................... 8-8
Cruise Control
................................. 2-34
Customer Assistance Information
................... 8- I
Customer Satisfaction Procedure .................... 8-2
Damage. Finish
............................... 6-57
Damage. Sheet Metal ............................ 6-57
Daytime Running Lamps
......................... 2-38
Daytime Running Lamps Indicator Light
............ 2-66
Dead Battery
................................... 5-3
Defects. Reporting Safety
................... 8- IO. 8- 1 1
Defensive Driving ............................... 4-2
Defogger. Rear Window
.......................... 3-8
Defrosting
..................................... 3-6
Dimensions. Vehicle
............................ 6-69
Dome Lamps
.............................. 2-39
Door Front
.......... ........................ 2-4
Rear
........................................ 2-4
Sliding
..................................... 2-10
Drive Position ................................. 2-21
Driver Position
................................. 1 - I 8
Driving
City
........................................ 4-17
Defensive
.................................... 4-2
Drunken
..................................... 4-2
Freeway
.................................... 4-18
InaBlizzard
................................. 4-24
In Foreign Countries
........................... 6-5
IntheRain .................................. 4-15
Locks
....................................... 2-6 Night
...................................... 4-13
OnCurves
................................... 4-9
On Grades While Towing a Trailer
............... 4-35
On
Hill and Mountain Roads .................... 4-21
OnSnowandIce ............................. 4-23
Through Water
............................... 4-17
WetRoads
.................................. 4-15
Winter
...................................... 4-22
With
a Trailer ................................ 4-33
Drunken Driving
................................ 4-2
Electrical Equipment. Adding
.......... 2-18. 3-28. 6-60
Electrical System
............................... 6-60
Engine
........................................ 6-9
Coolant
..................................... 6-25
Coolant Heater
............................... 2-18
Coolant Level Check
.......................... 7-41
Cooling System Capacity
....................... 6-67
Cover
...................................... 6-15
Exhaust
................. 2-13.2-27.2.30.4.25. 4.33
FuseBlock
.................................. 6-64
Identification
................................ 6-59
OilLevelCheck
.............................. 7-41
Overheating
................................. 5-13
Running While Parked
......................... 2-27
Specifications
................................ 6-67
Starting
..................................... 2-17
Temperature Gage
............................ 2-61
Engineoil
.................................... 6-10
Adding ..................................... 6-12
Additives
................................... 6-14
Checking
................................... 6-11
Pressure Gage
................................ 2-64
9-3

Downloaded from www.Manualslib.com manuals search engine Locks (Continued) Key Lock Cylinder Service
..................... 7-42
PowerDoor
.................................. 2-6
Sliding Door Child Security
..................... 2- 1 1
Lubricants and Fluids ............................ 7-47
Lubrication Service. Body
........................ 7-42
Luggagecarrier
................................ 2-47
Lumbar Controls
............................ 1-3
Maintenance. Normal Replacement Parts
........... 6-69
Maintenance Record
............................ 7-49
Maintenance Schedule
............................ 7- I
Long Trip/Highway ........................... 7-29
Long Trip/Highway Definition
................... 7-6
Long Trip/Highway Intervals
..................... 7-7
Owner Checks and Services
..................... 7-41
Periodic Maintenance Inspections
................ 7-45
Recommended Fluids and Lubricants
............. 7-47
Scheduled Maintenance Services
.................. 7-4
Short Trip/City
................................ 7-8
Short Trip/City Definition
....................... 7-5
Short Trip/City Intervals ........................ 7-5
Maintenance. Underbody
......................... 6-57
Maintenance When Trailer Towing
................. 4-36
Malfunction Indicator Lamp
...................... 2-62
ManualFrontSeat
............................... 1-2
Manual Lumbar Support
.......................... 1-3
Methanol ...................................... 6-4
Mirrors
....................................... 2-40
Convex Outside
.............................. 2-41
Inside Day/Night Rearview
..................... 2-40
Outside
..................................... 2-40
Visor Vanity
................................. 2-49 MMT
......................................... 6-4
Model Reference
................................. vi
Mountain Roads
................................ 4-21
Net. Convenience
.............. ........ 2-47
Neutral
....................................... 2-20
New Vehicle Break-In
........................... 2-15
Nightvision
................................... 4-14
Normal Maintenance Replacement Parts
............. 6-69
Odometer
.................................... 2-57
Odometer. Trip
................................. 2-57
Off-Road Recovery
............................. 4-10
Oil. Engine
.................................... 6-10
Opener. Garage Door
............................ 2-44
Outside Mirror
................................. 2-40
Overhead Console
.............................. 2-43
Overheating Engine
............................. 5-13
Owner Checks and Services
....................... 7-41
Owner Publications. Ordering
.............. 8- 11. 8- 12
Paint Spotting. Chemical ........................ 6-57
Park
......................................... 2-19
Shifting Into
................................. 2-23
Shifting Out of
............................... 2-26
Parking AtNight
.................................... 2-14
Brake
...................................... 2-22
Brake Mechanism Check
....................... 7-44
Lots
....................................... 2-14
With
a Trailer ................................ 4-36
Over
Things That
Burn ........................ 2-26
9-6