1997 GMC JIMMY heating

Engine Coolant
The cooling s stem 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 “Engine Overheating” in
the Index.
A 50/50 mixture of water and the DEX-COOL@ coolant
for your vehicle will:
Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 OF ( 129 O C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
8
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.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half DEX-COOL@ coolant which
won’t damage aluminum parts. If you use this mixture,
you don’t need to add anything else.
6-23

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
fronl overheating. Be sure the arrows
on the cap
line up with the overflow tube on the radiator
filler neck.
Thermostat
Engine coolant temperattrre 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.
Power Steerinp Fluid
6-26

A CAUTION:
Poorly maintained and improperly used tires
are dangerous.
0
0
0
0
Overloading your tires can cause
overheating
as a result of too much friction.
You could have an air-out and a serious
accident. See “1,oading Your Vehicle” in
the Index.
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 Cel-tification/Tire label. which is 011 the driver‘s
door edge, above the door latch. shows the correct
inflation
pressures for your tires when they’re cold.
“Cold“ lneans your vehicle has been sitting for at least
three hours or driven no more than 1 mile ( 1 .6 km).
NOTICE:
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:
Too much flexing
Too much heat
0 Tire overloading
Bad wear
0 Bad handling
0 Bad fuel economy.
NOTICE: (Continued)
6-4 1

Engine ........................................ 6-8
Coolant Heater
............................... 2-17
Coolant Level Check
.......................... 7-46
Coolant Temperature Gage
..................... 2-76
Fan Noise
................................... 5-22
Exhaust
..................................... 2-34
Identification
................................ 6-58
OilLevelCheck
............................... 7-46
Overheating
................................. 5-12
Specifications
................................ 6-63
Running While Parked
......................... 2-35
Starting
..................................... 2-15
Engine Oil
..................................... 6-9
Additives
................................... 6- 12
Checlung
.................................... 6-9
Pressure Gage
................................ 2-79
When to Change
.............................. 6-12
Express-Down Window
.......................... 2-36
Exterior Metal Parts, Protecting
.................... 6-55
Adding
..................................... 6-10
Kindtouse
................................. 6-10
Used
....................................... 6-13
Exhaust, Engine
................................ 2-34
Fabric Cleaning
............................... 6-50
Fifth Gear, Manual Transmission
................... 2-21
FillingYourTank
................................ 6-5
Filter
Air ........................................ 6-13
Remote Oil
.................................. 6-12 Finishcare
. ............................i...... 6-54
First Gear Finish Damage
................................. 6-56
Automatic Transmission
....................... 2-20
Flashers, Hazard Warning
......................... 5-2
Flat Tire, Changing
............................. 5-23
Fluids and Lubricants
....................... 6-64, 7-52
Fog Lamp Switch ............................... 2-47
Foreign Countries, Fuel
........................... 6-4
Fourth Gear, Manual Transmission
................. 2-21
Four-wheel Drive
......................... 2-23, 6-21
Front Map Lamps
............................... 2-48
Front Reading
Lamps .................. 2-47,2-51, 6-38
Front Sidemarker Lamp Bulb Replacement
........... 6-36
FrontStorageArea
.............................. 2-56
ManualTransmission
.......................... 2-21
French Language Manual
u
FrontAxle .................................... 6-22
.. ...........................
FrontTowing .................................. 5-10
Front Turn Signal Lamp Bulb Replacement
.......... 6-36
Fuel
.......................................... 6-3
Filling Your
Tank .............................. 6-5
Foreign Countries
.............................. 6-4
Fuses and Circuit Breakers
....................... 6-59
Gage
....................................... 2-81
bages Engine Coolant TemDerature
.................... 2-76 v L
Engine Oil Pressure ........................... 2-79
Fuel
....................................... 2-81
9-4 b

Garage Door Opener ............................ 2-5 1
GasCap ....................................... 6-5
Gate Ajar Light ................................ 2-81
GAWR ....................................... 4-43
Gear Positions
................................. 2- 18
GIov~ BOX .................................... 2-50
Gross Axle Weight Rating
........................ 4-43
Gross Vehicle Weight Rating
...................... 4-42
Guide en Franqais
11
GVWR ....................................... 4-42
.. .................................
Halogen Bulbs ................................ 6-33
Hazard Warning Flashers
.......................... 5-2
Head Restraints ................................. 1-6
Headlamps .................................... 2-35
Bulb Replacement ............................ 6-33
High/Low Beam Changer
...................... 2-39
On Reminder
................................ 2-46
Wiring
..................................... 6-59
Hearing Impaired. Customer Assistance .............. 8-4
Heating ........................................ 3-3
Highway Hypnosis .............................. 4-35
Hill and Mountain Roads
......................... 4-35
Hitches. Trailer
................................. 4-48
Horn
......................................... 2-37
Hydraulic Clutch
............................... 6- I9
Hydroplaning .................................. 4-3 I
Hood .......................................... 6-6
Check
...................................... 7-47 Ignition
Positions ..............................
Brake System ................................
Suspension .................................. 7-50
Throttle Linkage
.............................. 7-50
Transfer Case
................................ 7-51
Instrurnent Panel
............................... 2-67
Cleaning
.................................... 6-52
Cluster ..................................... 2-69
Interior Lamps
................................. 2-47
Exhallst
Systems
............................. 7-50
Steering
.................................... 7-50
F~seBlock
.................................. 6-59
Jacking Equipment
............................. 5-26
Jump Starting
................................... 5-3
Key
in the I.ylilion ............................. 2-12
Key Lock Cylinders Service ...................... 7-47
Key Release Burton
............................. 2-15
Keyless Entry System ............................ 2-6
Keys .......................................... 2-2
9-5

Methanol .................................... 6-4
Mirrors
....................................... 2-49
Convex Outside
.............................. 2-50
Inside Day/Night Rearview
..................... 2-49
Outside
..................................... 2-49
Visor Vanity
................................. 2-62
Model Reference
................................. vi
Mountain Roads ................................ 4-35
Multifunction Lever
............................. 2-38
Net. Convenience
.............................. 2-57
Neutral
Automatic Trans~nission
....................... 2- I9
Manual Transmission
.......................... 2-22
New Vehicle "Break-In"
......................... 2- I3
Nightvision
................................... 4-28
Normal Maintenance Replacement Parts
............. 6-63
Odometer
.................................... 2.68
Off-Road Driving .............................. 4- 15
Off-Road Recovery
............................. 4- I 1
Opener, Garage Door ............................ 2-5 1
Ordering Owner and Service Publications ....... 8- 11. 8- 12
Outside Mirror
Manual Adjust
............................... 2-49
Power Remote Control
......................... 2-49
Convex
..................................... 2-50
Overdrive, Automatic Transmission
................ 2-20
Oil.
Engine
..................................... 6-9 Overhead Console
.............................. 2-50
Overheating Engine
............................. 5-12
Owner Checks and Services
....................... 7-46
Owner Publications
........................ 8-11 .
Paint Spotting. Chemical ........................ 6-56
Park
Automatic Transmission
....................... 2-18
Shifting Into ................................. 2-30
Shifting Out of
............................... 2-33
AtNight
.................................... 2-12
Brake ...................................... 2-29
Brake Mechanism Check
....................... 7-49
Lots ....................................... 2-12
On Hills with a Trailer ......................... 4-52
Over Things That Burn
........................ 2-34
Your Vehicle. Manual Transmission
.............. 2-33
Passing
....................................... 4-12
Payload
....................................... 4-44
Periodic Maintenance Inspections
.................. 7-50
Power
Accessory Outlets
............................ 2-63
DoorLocks
................................... 2-5
Remote Control Mirror
........................ 2-49
Steering
..................................... 4-9
Steering Fluid
................................ 6-26
Windows
................................... 2-36
Powerseat ..................................... 1-3
Lumbar Controls .............................. 1-4
Parking
9-7