1994 CHEVROLET SUBURBAN service schedule

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

2 I. THERMOSTATICALLY CONTROLLED ENGINE COOLING FAN INSPECTIONAI/
- (If so equipped.) Inspect all hoses and
ducts for proper hook-up. Be sure the valve works properly.
22. EXHAUST PRESSURE REGULATOR VALVE INSPECTION” -
Check that the valve works properly, Correct any binding. Inspect
hoses for cracks, chafing or decay. Replace parts as needed.
23. TIRE AND WHEEL ROTATION AND INSPECTION - For proper
wear and maximum tire life, rotate tires at the first 6,000 miles
(10 000
kilometers) for Schedule
I (+) or 7,500 miles (12 500 kilometers) for
Schedule
I1 (0) and then every 15,000 miles (25 000 kilometers)
thereafter. Follow the instructions and patterns shown
in Section 6.
Check tires for uneven wear or damage. If irregular or premature wear is
apparent, check wheel alignment. Also, check or damaged wheels. See
“Tires”
in the Index for more information.
For dual wheels, whenever the vehicle, wheels, or fasteners are new,
have the wheel fastener torque
set at the first 100, 1,000 and 6,000 miles
( 160, 1600 and 10 000 km).
Block the tires opposite
those being removed to keep the vehicle from
rolling.
24.
DRIVE AXLE SERVICE? - Check readfront axle fluid level and
add
as needed. Check constant velocity joints and axle seals for
leaking.
0 Locking differential - Drain fluid at first oil change and refill.
Check fluid
level and add as needed at subsequent oil changes. In
dusty areas, or trailer towing applications drain fluid at every
15,000 miles (24 135 kilometers) and refill.
Standard differential - Check fluid level and add as needed at
every oil change. In dusty areas, or trailer towing applications,
drain fluid every
15,000 miles (24 135 kilometers) and refill.
0 More frequent lubrication may be required on heavy-duty or
off-road
use.
:i: An Emission Control Service
ANoise Emission Control Service
VApplicable
only to vehicles sold in the United States
+A fluid
loss in these systems may indicate a problem. Have them
inspected and repaired
at once.
7-21 ProCarManuals.com

Maintenance Record
After each of the preceding Scheduled Maintenance Services is performed,
record the date, odometer reading, services performed (list
item numbers)
and who performed the services in
the appropriate column. In addition,
retain copies of your receipts. It
is suggested that receipts be kept with your
Owner's Manual.
7-28 ProCarManuals.com

L
Lights ..................................................... 2-47
Brake System Warning ......................................... 2-67
Bulb Replacement
............................................. 6-86
Charging System Light
......................................... 2-70
Front Parking/Turn Signal
....................................... 6-52
CheckGagesLight
............................................ 2-71
Dome
....................................................... 2-49
Headlights (See “Headlights”)
Indicator
.................................................... 2-66
Operation
................................................... 2-37
Reading ..................................................... 2-49
Service Engine
Soon ...................................... 2-7 1. 6-59
Rear
........................................................ 6-55
Replacement Chart
............................................ 6-86
SideMarker .................................................. 6-53
Loading Your Vehicle ....................................... 4-12, 6-59
Add-on Equipment
........................................... 6-61
Accelerator Control System
..................................... 6-48
Constant Velocity Joints
........................................ 6-48
Front Shock Absorbers
......................................... 6-46
Front Suspension and Steering Linkage
............................ 6-46
Front Wheel Bearings .......................................... 6-46
TailgateHandle
............................................... 6-49
HoodLatchesandHinge ........................................ 6-48
Lockcylinders ............................................... 6-49
Propeller Shaft Slip Splines
..................................... 6-48
RearAxle ................................................... 6-33
Recommended Lubricants ...................................... 7-25
Transfercase ................................................ 6-34
Luggagecarrier ................................................. 2-79
Lubrication
..................................................... 6-48
Body
....................................................... 6-48
FrontAxle
................................................... 6-35
Maintenance Otherltems
.................................................. 6-46
Record .................................................. 7.2. 7.27
Scheduled Maintenance .................................... 747-1 8
When Towing
a Trailer ......................................... 4-36
Master Cylinder (See “Brakes”)
Mirrors
........................................................ 2-51
Electric Outside ............................................... 2-52
Inside ....................................................... 2-51
Multifunction Lever .............................................. 2-38
Turn SignalLane Change Indicator
............................... 2-73
Underbody
.................................................. 6-76
... ModelReference .................................................. 111
6
ProCarManuals.com

Safety Belts (continued)
Extender
.................................................... 1-42
Lapshoulder ................................................. 1-29
Larger Children
............................................... 1-40
Properwear ................................................. 1-18
Questions
& Answers .......................................... 1-17
RearSeat
.................................................... 1-28
ReminderLight
............................................... 1-18
Replacing After a Crash
........................................ 1-43
RightFrontPassenger
.......................................... 1-26
Small Children and Babies
...................................... 1-31
Use During Pregnancy ......................................... 1-26
Safety Chains
................................................... 4-39
Safety Warnings and Symbols
........................................ vi
Scheduled Maintenance Services
................................ 747-1 8
Seats
........................................................... 1-2
Controls
...................................................... 1-2
Easy Entry Seat
................................................ 1-6
ManualFront
.................................................. 1-2
PowerDriver’s
................................................ 1-3
RearFolding .................................................. 1-8
Reclining
..................................................... 1-5
Removable
.................................................. 1-10
SeatbackLatches ............................................... 1-5
Secondary Air Injection (AIR System) ............................... 6-59
Service Do-It-Yourself
................................................ 6-3
Parts Identification Label
....................................... 6-80
Publications
................................................... 8-7
Replacement Parts and Filter Recommendations
..................... 6-83
Service Engine Soon Light
................................... 2-7 1, 6-59
Service Station Checks
............................................ 7-29
Shift Indicator Light ......................................... 2-25, 2-72
Shifting Into Park
................................................ 2-28
Single Belt Accessory Drive
....................................... 6-47
SpareTire
...................................................... 5-26
Removal
.................................................... 5-26
Storage
..................................................... 5-37
Specification Charts
.............................................. 6-81
Speedometer
.................................................... 2-65
Starting your Engine
........................................ 2-13, 2-16
Steering ........................................................ 4-7
ColumnShiftLever
............................................ 2-28
In Emergencies
................................................ 4-8
Tips
......................................................... 4-7
Storage Compartments
............................................ 2-56
Other ....................................................... 2-63
Sunvisors
..................................................... 2-53
WhyTheyWork
.............................................. 1-14
b
ProCarManuals.com