1997 CHEVROLET ASTRO engine overheat

Downloaded from www.Manualslib.com manuals search engine NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The repair cost wouldn’t be covered by your
warranty. Too much water in the mix 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 Radiator Pressure Cap
I 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.
When you replace your radiator pressure cap, a GM cap
is recommended.
6-29

Downloaded from www.Manualslib.com manuals search engine Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service,
see your warranty booklet for details.
I
1
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.
CAUTION: (Continued)
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.
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.
Overinflated tires are more likely to be
6-43

Downloaded from www.Manualslib.com manuals search engine 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.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links. This greatly reduces the
chance
of fires caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band
is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
Spare fuses and a fuse puller are located in the
underhood electrical center. You can remove fuses with
the fuse puller. Remember to replace
any of the spare
fuses
you use, so you will have some if you ever need
them again.
If you ever have a problem on the road and don’t have
a spare fuse,
you can “borrow” one that has the same
amperage. Just pick some feature of your vehicle that
you can get along without -- like the radio or cigarette
lighter
-- and use its fuse, if it is the correct amperage.
Replace
it as soon as you can.
There are two fuse blocks in your vehicle: one is inside
the vehicle and one is
in the engine compartment.
6-61

Downloaded from www.Manualslib.com manuals search engine Cooling System ................................ 5- I5
Courtesy Lamps ................................ 2-39
Courtesy Transportation
........................... 8-8
Cruise Control
................................. 2-34
Customer Assistance Information
................... 8- 1
Customer Satisfaction Procedure .................... 8-2
Customer Assistance for Text Telephone Users
......... 8-4
Damage. Finish
............................... 6-58
Damage. Sheet Metal
............................ 6-57
Daytime Running Lamps
......................... 2-38
Daytime Running Lamps Indicator Light
............ 2-68
Dead Battery
................................... 5-3
Defects. Reporting Safety
................... 8- IO. 8- 11
Defensive Driving ............................... 4-2
Defogger. Rear Window
.......................... 3-8
Defrosting
..................................... 3-6
Dimensions. Vehicle
............................ 6-68
Dome Lamps
.................................. 2-39
Door Locks
....................................... 2-6
Sliding ..................................... 2-10
Drive Position
................................. 2-21
Driver Position
................................. 1 - 18
Driving
City
........................................ 4-18
Defensive
.................................... 4-2
Drunken
..................................... 4-3
Freeway
.................................... 4-19
TnaBlizzard
................................. 4-26
In Foreign Countries ........................... 6-4
IntheRain
.................................. 4-16
Night
...................................... 4-14
OnCurves
................................... 4-9
On Grades While Towing
a Trailer ............... 4-37
On
Hill and Mountain Roads .................... 4-22
OnSnowandIce
............................. 4-24
Throughwater
............................... 4-18
WetRoads
.................................. 4-16
Winter
...................................... 4-24
With a Trailer ................................ 4-35
DrunkenDriving
................................ 4-3
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
.......................... 7-43
Cooling System Capacity
....................... 6-66
Cover
...................................... 6-15
Exhaust ..................................... 2-27
FuseBlock
.................................. 6-64
Identification
................................ 6-60
OilLevelCheck
.............................. 7-43
Overheating
................................. 5-13
Running While Parked
......................... 2-28
Specifications
................................ 6-66
Starting
..................................... 2-17
Temperature Gage
............................ 2-64
9-3

Downloaded from www.Manualslib.com manuals search engine Loading Your Vehicle ........................... 4-28
Cylinders
................................... 7-44
Door
........................................ 2-6
Ignition Transmission Lock Check
............... 7-46
Key Lock Cylinder Service
..................... 7-44
PowerDoor
.................................. 2-7
Sliding Door Child Security
..................... 2- I I
Lubricants and Fluids ............................ 7-49
Lubrication Service. Body
........................ 7-44
Luggagecarrier
................................ 2-49
Lumbar Controls
................................ 1-3
Locks
Maintenance. Normal Replacement Parts
........... 6-68
Maintenance Record
............................ 7-5 1
Maintenance Schedule ............................ 7- I
Long Trip/Highway Definition ................... 7-6
Long Tripmighway Intervals ..................... 7-6
Owner Checks and Services
..................... 7-43
Periodic Maintenance Inspections
................ 7-47
Recommended Fluids and Lubricants
............. 7-49
Scheduled Maintenance Services
.................. 7-4
Short TripKity Definition
....................... 7-5
Short TripKity Intervals ........................ 7-5
Maintenance When Trailer Towing
................. 4-38
Malfunction Indicator Lamp
...................... 2-65
ManualFrontSeat
............................... 1-2
Methanol
...................................... 6-3
Maintenance. Underbody
......................... 6-58
Manual Lumbar Support
.......................... 1-3 Mirrors
....................................... 2-41
Convex Outside
.............................. 2-42
Inside Day/Night Rearview
..................... 2-41
Outside
..................................... 2-41
Visorvanity
................................. 2-52
MMT
......................................... 6-3
Model Reference
................................. vi
MountainRoads ................................ 4-22
Net. Convenience
.............................. 2-49
Neutral
....................................... 2-21
New Vehicle Break-In
........................... 2-15
Nightvision
................................... 4-15
odometer
.................................... 2-59
Odometer. Trip
................................. 2-59
Off-Road Recovery
............................. 4-11
Oil. Engine
.................................... 6-11
Opener. Garage Door ............................ 2-45
Outside Mirror
................................. 2-41
Overhead Console
.............................. 2-44
Overheating Engine
............................. 5-13
Owner Checks and Services
....................... 7-43
Owner Publications. Ordering
................ 8- 1 I. 8- 12
Paint Spotting. Chemical
........................ 6-58
Park(P)
...................................... 2-19
Shifting Into ................................. 2-24
Shifting Out of
............................... 2-26