1994 CHEVROLET SUBURBAN oil temperature

Front Axle
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how often to check the
lubricant and when to change
it. See “Scheduled Maintenance Services” in
the Index.
How to Check Lubricant
If the level is below
the bottom of the filler
plug hole, you’ll need
to add some lubricant.
If the differential is at
operating temperature
(warm), add enough
lubricant to raise the level
to the bottom of
the filler plug hole.
If the differential is cold, add enough lubricant to raise the level to
1/2 inch
(12 mm) below 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 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.
The proper coolant for your vehicle will:
Give freezing protection down to -20°F (-29”C), or -34°F (-37°C) in
Give boiling protection up to 258°F (1 25°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Canada
and for vehicles with the cold climate option.
Let the warning lights and gages work as they should.
6-35 ProCarManuals.com

Explanation Of Scheduled Maintenance Services
Below are explanations of the services listed in the maintenance charts.
The proper fluids and lubricants to
use are listed in this section. Make sure
whoever services your vehicle uses these.
All parts should be replaced and
all necessary repairs done before you or anyone else drives the vehicle.
1. ENGINE OIL AND OIL FILTER CHANGE* -ALWAYS USE SH
ENERGY CONSERVIJTG TI (GASOLINE ENGINE) OR CF-4/SH
(DIESEL ENGINE) QUALITY OILS OF THE PROPER VISCOSITY.
To determine the preferred viscosity oil for your vehicle’s engine
(e.g.
SAE 5W-30 or low-30), see “Engine Oil” in the Index.
2. CHASSIS LUBRICATION - Lubricate the front suspension, king
pin bushings, steering linkage, transmission, and transfer case shift
linkage, parking brake cable guides, rear driveline center splines and
front axle propshaft splines, brake pedal springs, and clutch pedal
springs at the intervals specified.
Ball joints and king pin bushings should not be lubricated unless their
temperature is
10°F (-12”C), or higher. When the weather is cold, let
them warm up before lubrication or they could be damaged.
Also, be sure to check all the vehicle fluid levels at this time.
3. CLUTCH FORK BALL STUD LUBRICATION (5-SPEED
MANUAL TRANSMISSION
WITH DEEP LOW ) - Not
applicable to utility or wagon models.
4. COOLING SYSTEM SERVICE*? - Drain, flush and refill system
with new coolant. See “Engine Coolant’’
in the Index for the proper
coolant and mixture to use
in your vehicle.
Also inspect the hoses and replace them
if they are cracked, swollen, or
deteriorated. Tighten all
hose clamps (except constant tension clamps).
Remove debris and clean
the outside of the radiator and air
conditioning condenser. Wash the radiator
neck. To ensure proper
operation, pressure test the radiator and cap.
5. AIR CLEANER FILTER REPLACEMENT* - Replace at every
30,000 miles (50 000 km) or more often under dusty conditions. Ask
your dealer for the proper replacement intervals
for your driving
conditions.
6. FRONT WHEEL BEARING REPACK (2-WHEEL DRIVE
ONLY)
- Clean and repack the front wheel bearings at each brake
relining, or at the specified interval, whichever comes first.
4’ An Emission Control Service
*A fluid loss in these systems may indicate a problem. Have them
inspected and repaired at once.
7- 18
ProCarManuals.com

Driving (continued)
Braking
...................................................... 4-5
Control
of A Vehicle ............................................ 4-4
Defensive
.................................................... 4-2
Downhill
.................................................... 4-18
Guidelines
................................................... 4-11
Highway Hypnosis
............................................ 4-29
Hydroplaning
................................................ 4-26
In Blizzard ................................................... 4-33
InCity
...................................................... 4-26
InRain
...................................................... 4-24
In Sand, Mud, Ice, Or Snow ................................ 4-21, 5-40
InWater ..................................................... 4-22
LongDistance
................................................ 4-28
LossofControl
............................................... 4-10
Nightvision
................................................. 4-24
Off-Roading
................................................. 4-12
OnCurves
.................................................... 4-7
OnGrades
................................................... 4-42
On Hill and Mountain Roads .................................... 4-29
On Off-Road
Hills ............................................ 4-15
OnSnoworIce
............................................... 4-31
Passing
...................................................... 4-9
Skidding
.................................................... 4-11
Stuck in Deep
Snow ...................................... 4-33, 5-40
Throughwater .......................................... 2-15, 4-22
Uphill
...................................................... 4-16
Winter
...................................................... 4-30
WithaTrailer ................................................ 4-36
DrunkenDriving
................................................. 4-2
Freeway
..................................................... 4-27
E
Electrical System
Engine Add-on
Equipment
...........................................
Adding Coolant ..................................... 5-14,5-20.
Aircleaner
..................................................
Block Heater ........................................ 2-1 9,3-5,
Computer Command Control System
..............................
Coolant ...................
Coolant Temperature Gage ....
Cooling System .............
Crankcase .................
Exhaust ...................
Fan Noise .................
Identification ...............
Leaving Vehicle While Running
Oil (See “Oil”)
Overheating
................
Running While Parked .......
Starting ...................
Equipment. Add-on .........
Exhaust System .............
..................................
..................................
..................................
..................................
..................................
..................................
............................. 6-79,
..................................
..................................
..................................
............................. 2-13,
..................................
..................................
6-80
6-37
6-27
6-21
6-58
6-35
2-75
5-12
6-82
5-24 2-31
6-81
2-31
5-10
2-31
2-16
6-61
6-58
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FanNoise ...................................................... 5-24
Filter Replacement Chart .......................................... 6-83
Finish Care
........................................................ 6-69
Damage
..................................................... 6-76
Automatic Transmission
........................................ 6-28
Brake
....................................................... 6-44
Capacities ................................................... 6-82
Coolant
..................................................... 5-11
FrontAxle ................................................... 6-35
Hydraulicclutch
.............................................. 6-33
Leakcheck .................................................. 6-48
ManualTransmission
.......................................... 6-31
Power Steering
............................................... 6-40
Radiator
..................................................... 5-16
Rear Axle ................................................... 6-34
Recommended Fluids
.......................................... 7-25
Transfer Case
........................................... 2-33, 6-34
Windshield Washer
....................................... 2-41, 6-42
Four-wheel Drive
.......................................... 2-32, 6-34
Transfer Case
........................................... 2-33, 6-34
FrontAxle
................................................... 6-35
Fuel
........................................................... 6-4
FillingYourTank ............................................. 6-12
Foreign Countries
............................................. 6-12
Gage
....................................................... 2-74
Gasolines for Cleaner
Air ........................................ 6-5
Tankcapacity
................................................ 6-82
Fuses and Circuit Breakers
................................... 6-56, 6-85
FuseBlock
.................................................. 6-57
Headlights
................................................... 6-56
Power Windows
and Other Power Options ......................... 6-57
Trailer Wiring Harness
......................................... 6-57
Windshield Wipers
............................................ 6-56
Fluid
G
Gages ......................................................... 2-74
Coolant Temperature Gage
...................................... 2-75
FuelGage
................................................... 2-74
Odometer
................................................... 2-65
Oil Pressure Gage ............................................. 2-76
Speedometer
................................................. 2-67
Tachometer
.................................................. 2-66
Trip Odometer
................................................ 2-65
Voltmeter
.................................................... 2-77
GloveBox
..................................................... 2-56
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