heating GMC SIERRA 1998 User Guide

How to Check Lubricant
If the level is below the bottom of the filler plug hole,
you may need to add some lubricant.
When the differential is cold, add enough lubricant to
raise the level to 1/2 inch (12
mrn) 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 “Recommended Fluids and
Lubricants” in the Index.
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 I
(240 000 km) whichever occurs first, if you add only ~
DEX-COOL’ extended life coolant.
8
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
i
with engine overheating, see “Engine Overheating” in 1
the Index.
A 50/50 mixture of water and DEX-COOL@ coolant will: 1
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 OF (1 29 O C).
Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning gages work as they should.
6-28 ;L
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Radiator Pressure Cap
(Gasoline Engine)
The radiator pressure cap must be tightly installed with
the arrows
on the cap lined up with the overflow tube on
the radiator filler neck.
~~~ ~
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.
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.
When you replace your thermostat, an
AC@ thermostat
is recommended.
6-32
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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
GM Warranty booklet for details.
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 “Loading 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.
6-51
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Tachometer .................................. 2-63
Voltmeter
................................... 2-67
Garage Door Opener
............................ 2-5 1
GAWR ....................................... 4-43
Gear Positions. Automatic Transmission
............. 2- 15
Gear Positions. Manual Transmission .......... 2- I8 . 2- 19
GloveBox .................................... 2-51
Gross Axle Weight Rating ........................ 4-43
Gross Vehicle Weight Rating
...................... 4-43
Guide en Franpis
11
GVWR ....................................... 4-43
.. .................................
Halogen Bulbs ................................ 6-39
Hazard Warning Flashers
.......................... 5-2
Head Restraints ................................. 1-5
Headlamps .................................... 2-41
Bulb Replacement
....................... 6-40. 6.4 I
High/Low Beam Changer ...................... 2-36
On Reminder
................................ 2-42
Wiring
..................................... 6-71
Heating
........................................ 3-5
High-Beam Headlamps
.......................... 2-36
Hill and Mountain Roads
......................... 4-34
Hitches. Trailer
................................. 4-55
Hood
Checking Things Under ......................... 6-9
Release
..................................... 6-10
Horn ......................................... 2-34
Hydraulic Clutch Fluid
...................... 6-25 . 7-46
Hydraulic Clutch System Check
................... 7-41
Hydroplaning
.................................. 4-30
Hearing Ilnpaired
. Customer Assistance .............. 8-4
Highway Hypnosis
.............................. 4-33 Ignition
Positions
..............................
Brakesystem ................................ 7-45
Drive Axle
.................................. 7-45
Engine Cooling System
........................ 7-44
Exhaust
Systems ............................. 7-44
Steering
.................................... 7-44
Suspension
.................................. 7-44
Throttle Linkage
.............................. 7-44
Transfer Case (Four-Wheel Drive)
............... 7-45
Instrument Panel
............................... 2-60
Cleaning
.................................... 6-64
Cluster
..................................... 2-62
FuseBlock
.................................. 6-72
Intensity Control
............................. 2-43
Interior Lamps
................................. 2-43
.................................... J ack. Tire 5-25
Jump Starting
................................... 5-3
Key Lock Cylinders Service
..................... 7-41
Key Release Button
............................. 2-12
Keyless Entry System ............................ 2-6
Keys
.......................................... 2-2
9-5
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Manual Transmission Check
...................................... 7-41
Fluid
.................................. 6.24, 7.46
Shifting
................................ 2- 18. 2. I9
Starting Your Engine .......................... 2- 13
Manualwindows
............................... 2-32
Memo Pad Holder
......................... 2.55. 2.57
Methanol
...................................... 6- 5
Mirrors ....................................... 2-45
CamperType
................................ 2-48
Convex Outside
.............................. 2-50
Electrochromic Daymight Rearview
.............. 2-46
Inside Daymight Rearview
..................... 2-45
Manual
..................................... 2-48
Power Remote Control
......................... 2-50
WestCoastType
.............................. 2-50
MMT
......................................... 6-4
Model Reference
................................. vi
MountainRoads ................................ 4-34
New Vehicle Break-In
.......................... 2- 10
Nightvision ................................... 4-27
Noise Control System ........................... 6- 13
Normal Maintenance. Normal Replacement Parts
...... 6-78
Odometer
.................................... 2-63
Odometer. Trip
................................. 2-63
Off-Road Driving
.............................. 4- I4
Off-Road Recovery
............................. 4- I I
Oil. Engine ............................... 6-14. 7-46
Opener. Garage Door
............................ 2-51
Overheating Engine ............................. 5- 13 Owner Checks
and Services
....................... 7-40
Owner Publications. Ordering
................ 8- 1 1. 8- 12
Paint Spotting. Chemical
........................ 6-68
Park. Shifting Into
.............................. 2-26
Park. Shifting Out of
............................ 2-29
Parking
AtNight
..................................... 2-9
Brake
...................................... 2-25
Brake Mechanism Check
....................... 7-43
Over Things That Burn
........................ 2-30
With a Trailer ................................ 4-58
Your Vehicle. Manual Transmission
.............. 2-29
Passenger Position
.............................. 1-23
Lots
........................................ 2-9
Passin;
@ ..................................... 4-11
Passlock
................................ 2- 10, 2-73
Periodic Maintenance Inspections
.................. 7-44
Pickup Box Identification Lamp Bulb Replacement
.... 6-47
Pickup Conversion to Chassis Cab
................. 4-48
Power
Accessory Outlet
............................. 2-59
DoorLocks
................................... 2-6
Driver’sSeat ................................. 1-3
Option Fuses
................................ 6-71
Remote Control Mirror
........................ 2-50
Steering ..................................... 4-8
Steering Fluid ........................... 6-33, 7-46
Take-Off .................................... 4-61
Winches
.................................... 4-61
Windows
................................... 2-32
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