1994 CHEVROLET SUBURBAN service interval

GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS
- MAINTENANCE SCHEDULE tf
23
* An Emission Control Service Brake Systems Inspection**
25
ttttt-t Drive Axle Service** 24
t Tire and Wheel Rotation**
** See “Explanation
of Scheduled Maintenance Services” in the Index
$ The California Air Resources Board has determined that the fail\
ure to perform this
maintenance item will not nullify the emission warranty or limi\
t recall liability prior
to the
completion of vehicle useful life. General Motors, however, urges that all re\
commended
maintenance services be performed
at the indicated intervals and the maintenance be
recorded.
t To determine the emissions classification of your engine, refer to “Selecting the Proper
Maintenance Chart” in this section.
TO401 /TO90 1
7-6 ProCarManuals.com

GASOLINE ENGINES WITH LIGHT DUTY EMlSSlONS
- MAINTENANCE SCHEDULE fi (continued)
THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
DONE AFTER 60,000 MILES AT THE SAME INTERVALS.
T0402/T0902
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GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS
- MAINTENANCE SCHEDULE Iv
Item
No.
1
2
3
4
5
6
7
9
10
11
14
15
17
23
24
25
*P
** s
$7
n
n r(
tT
hi
TO4031
C
Service
1 Emission Control Service
3e “Explanation of Scheduled Maintenance Services” in the Index.
le California Air Resources Board has determined that the failure to perform this
aintenance item
will not nullify the emission warranty or limit recall liability prior to the
)mpletion of vehicle useful life. General Motors, however, urges that all re\
commended
aintenance services be performed at the indicated intervals and \
the maintenance be
corded.
) determine the emissions classification of your engine, refer to “Selecting the Proper
aintenance Chart” in this section.
r0903
I
7-8
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THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (100 000 km) ARE TO BE
DONE AFTER 60,000 MILES AT THE SAME INTERVALS.
T0403a/T0903a
7-9 ProCarManuals.com

GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS
- MAINTENANCE SCHEDULE # (continued)
THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (1 00 000 km) ARE TO BE
DONE AFTER 60,000 MILES AT THE SAME INTERVALS.
TO405
7-11 ProCarManuals.com

DIESEL ENGINES - MAINTENANCE SCHEDULE t"f
(continued)
THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (I00 000 km) ARE TO BE
DONE AFTER
60,000 MILES AT THE SAME INTERVALS.
T0409lT0909
7- 15
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DIESEL ENGINES - MAINTENANCE SCHEDULE 1fl
(continued)
THE SERVICES SHOWN ON THIS CHART UP TO 60,000 MILES (1 00 000 km) ARE TO BE
DONE AFTER 60,000 MILES AT THE SAME INTERVALS.
TO41 1 /TO91 1
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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
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