1993 CHEVROLET SUBURBAN engine

r ENGINE EMISSIONS CLASSIFICATION I
VIN Code
Z
H
K
C
J
F
N
Enaine Description
4.3L V6TTBI
with 8500 GVWR and below
with 8501 GVWR and above
5.0L V8TTBI
5.7L V8TTBI
with 8500 GWR and below
with 8501 GVWR and above
6.2L V8IDiesel
6.2L V8IDiesel
6.5L V8IDiesel
7.4L V8/TBI
.Except 454
SS Model
with 454
SS Model
L
Emissions I
LD
HD LD
LD
HD
LD
HD HD
HD LD TO268
NOTE: TBI is a throttle body injection system.
Selecting the Proper Maintenance Schedule
Here is how to tell which schedule to follow once you find the proper
maintenance chart
to use.
MAINTENANCE SCHEDULE I
Is any one of these true for your vehicle?
Most trips are less than 4 miles (6 kilometers).
Most trips are less than 10 miles (16 kilometers), and the outside
The engine is at low speed most of the time (as in door-to-door delivery,
temperatures
are below freezing.
stop-and-go traffic, or commercial use).
You operate in dusty areas or off-road frequently.
You tow a trailer
If any one (or more) of these is true for your driving, follow Schedule I.
Schedule 1 is shown by a plus sign (t) on the chart.
MAINTENANCE SCHEDULE II
Follow Schedule II ONLY if none of the above conditions are true. Schedule
II is shown by a dot (.) on the chart.
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Scheduled Maintenance Services
GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS-
FOOTNOTES:
**See “Explanation of Scheduled Maintenance Services” in this section.
*An
Emission Control Service
tTo determine the emissions classification of your engine refer to “Selecting the
Proper Maintenance Chart” in this section.
TO337
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Scheduled Maintenance Services
GASOLINE ENGINES WITH LIGHT DUTY EMISSIONS-
If your driving conditions meet those specified in “Scheduled Ma\
intenancc
Services” in this section, use Maintenance Schedule
I (t).
Item Miles (000) 3 6 7.5 9 12 15 18
No. Service Kilometers (000) 5 10 12.5 15 20 25 30
1 Engine Oil Change*-Every 12 Months, or e
Oil Filter Change*-Every 12 Months, or e
2 Chassis Lubrication-Every 12 Months, or e
3 Clutch Fork Ball Stud Lubrication
5 Cooling System Service*-Every 24
6 Air Cleaner Filter Replacement* Months
or
7 Front Wheel Bearing Repack
8 Transmission Service**
25 Drive Axle Service**
26 Brake Systems Inspection**
FOOTNOTES:
**See “Explanation
of Scheduled Maintenance Services” in this section.
*An Emission Control Service
tTo determine the emissions classification of your engine refer to “Selecting
the
Proper Maintenance Chart”
in this section.
TO332
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Scheduled Maintenance Services
GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS-
‘OOTNOTES:
“See “Exglal?ation of Scheduled Maintenance Services” in this section.
L Also a Noise Emission Control Service
I Applicable only to vehicles sold in the United States
- To determine the emissions classification of your engine refer to “Selecting the
An
Emission Control Service
Proper Maintenance Chart” in this section.
TO339
I If your driving conditions meet those specified in “Scheduled Maintenance
-
-
-
-
m
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Scheduled Maintenance Services
GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS-
If your driving conditions meet those specified in “Scheduled Ma\
intenancc Services”
in this section, use Maintenance Schedule I (t).
Miles (000) 3 6 9 12
Service Kilometers (000) 5 10 15 20
Item
No.
1-
2
3
5
6
7
8
10
11
12
13
14
15
16 17
18
19 I
20 !
21 1
22
’
.
24 *
25 I
26 I
FOOTNOTES:
* An Emission Control Service
**See “Explanation
of Scheduled Maintenance Services” in this section.
A Also a Noise Emission Control Service
I Applicable only to vehicles sold in the United States
t To determine the emissions classification of your engine refer to “Selecting the Proper
Maintenance Chart” in this section.
T033f
Oil Filter Change*-Every 12 Months, or
Drive Axle Service**
3rake Systems Inspection**
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Scheduled Maintenance Services
6.2L AND 6.5L DIESEL ENGINES-
FOOTNOTES:
* Change filter every 15,000 miles (24 000 km), except when operating in dusty
conditions. Dusty conditions may require more frequent filter re\
placement. Extreme
dust and dirt operating conditions (off-road), may require the\
air filter
to be
checked as often as every
300 miles (483 km) and replaced as necessary.
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in this section.
Applicable only to trucks sold in the United States.
A Also, a Noise Control Service (applicable to vehicles with engine VIN Code J).
t This maintenance schedule applies to all diesel engines available. TO330
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Scheduled Maintenance Services
6.2L AND 6.5L DIESEL ENGINES-
-0OTNOTES:
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in this section.
W Applicable only to trucks sold in the United States.
A Also, a Noise Control Service (applicable to vehicles with engine VIN Code J).
t This maintenance schedule applies to sll diesel engines available. TO33 1
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Scheduled Maintenance Services
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 ve\
hicle.
1. ENGINE OIL AND OIL FILTER CHANGE* -ALWAYS USE SG OR
SG/CE QUALITY, ENERGY CONSERVING II OILS OF THE PROPER
VISCOSITY. To determine the preferred viscosity oil for your vehicle’s
engine (e.g. SAE 5W-30 or
10W-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, propshaft splines
(2 wheel drive), brake
pedal springs, and clutch pedal springs at the intervals specif\
ied.
If you have a 3500 HD, lubricate the king pins and king pin bushings
every
1,500 miles (2500 km) for Maintenance Schedule 1, or every 3,000
(5000 km) for Maintenance Schedule 2.
Ball joints and king pin bushings should not be lubricated unl\
ess 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 -Lubricate the clutch fork
ball stud through the fitting on the clutch housing. Lubricant \
must be
added “sparingly” to the fitting, as only.
0066 Ib. (.003 kg) is required to
lubricate the ball stud surface. Do not add lubricant more often than the
intervals in the Maintenance Charts.
Too much lubricant will damage
the clutch
assembly.
4. ENGINE IDLE SPEED ADJUSTMENT (DIESEL ENGINES)* -Adjust to
the specifications shown on the underhood label. You must use
calibrated test equipment.
5. 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 i cracked, swollen, or
deteriorated. Tighten all hose clamps (except consrant tension clamps).
Remove debris and clean the outside of the radiator and air c\
onditioning
condenser. Wash the radiator neck.
To ensure proper operation, pressure
test the radiator and cap.
* An Emission Control Service
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