1994 CHEVROLET SUBURBAN fuel cap

You can operate some vehicles at reduced inflation pressures only when
you’ll be carrying reduced loads. On those vehicles, the minimum cold
inflation pressures for a typical reduced load are printed on the “Improved
Ride Tire Pressure” label located on the driver’s door. Weigh the vehicle to
find the load on each tire and see the label for the minimum cold inflation
pressures for that load.
Don’t let anyone tell you that underinflation or overinflation is
all right.
It’s not. If your tires don’t have enough air
(underinflation) you can get:
Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy.
If your tires have too much air (overinflation), you can get:
0 Unusual wear
Bad handling
Rough ride
Needless damage from road hazards.
When to Check
Check your tires once a month or more. Also, check the tire pressure of the
spare tire.
How to Check
Use a good quality pocket-type gage to check tire pressure. Simply looking
at the tires will not tell you the pressure, especially
if you have radial tires
- which may look properly inflated even if they’re underinflated.
If your tires have valve caps, be sure to put them back on. They help prevent
leaks by keeping out dirt and moisture.
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Cooling System Capacity
ENGINE VIN
5.7L K
6.5L S
6.5L F
7.4L N
QTY Without AfC* QTY With A/C*
17.5 Quarts (1 6.5 Liters)
18 Quarts ( I7 Liters)
25 Quarts
(23.5 Liters) 25 Quarts (23.5 Liters)
26.5 Quarts (25 Liters)
26.5 Quarts (25 Liters)
23 Quarts (22 Liters)
25 Quarts (23.5 Liters)
After refill, the level MUST be checked as outlined under “Engine Cooling
System”
in Section 5.
*All quantities are approximate.
Crankcase Capacity
ENGINE
5.7L
6.5L
6.5L
7.4L
VIN
K
ST
F?
N
QTY Without Filter“
4 Quarts (3.8 Liters)
6 Quarts (5.7 Liters)
QTY With Filter:$
5 Quarts (4.8 Liters)
7 Quarts (6.5 Liters)
7 Quarts
(6.5 Liters)
7 Quarts (6.5 Liters)
After refill, the level MUST be checked
as outlined under “Engine Oil And
Filter Recommendations”
in Section 5.
*All quantities are approximate.
?Oil filter should be changed at
EVERY oil change.
Fuel Tank Capacity
TYPE
Gasoline/Diesel
Utility Model -Standard
Wagon Model-S tandard
QUANTITY
30 Gallons (I 13 Liters)
42 Gallons (I 59 Liters)
All quantities are for a completely dry tank and are approximate.
6-82
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Service Replacement Part and Filter
Recommendations -Gas Engines
Engine
VIN
Oil Filter
Air Cleaner Filter
PCV Valve
Spark Plugs‘%
Fuel Filter
Radiator Cap
5.7L
K
PF353‘
A348C
cv774c
.CR43TS
GF48 1
RC36
$Four Wheel Drive Vehicle -use a
PFS 1 oil filter
*Use AC copper-cored resister type spark plugs
Service Replacement Part and Filter
Recommendations -Diesel Engines
Engine
VIN
Oil Filter
Air Cleaner
Fuel Filter
Surge Tank Cap 6.5L
S”
PF3S
A917C
TP
I 006
RC33
7.4L
N
PF35
A348C
cv774c
.CR43TS
GF48
I
RC36
6.5L
F”
PF35
A9 17C
TP
1006
RC33
*Heavy Duty Emission Engine
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air conditioning
system
in your vehicle needs refrigerant, be sure the proper refrigerant is
used. If you’re not sure, ask your GM dealer. For additional information, see
your “Warranty and Owner Assistance Information” booklet.
Air Conditioning Refrigerant Capacity
TYPE
Refrigerant R 134A
Refrigerant
R 134A
QTY
Front A/C 3.0 lbs. (1.360 kg)
Front and Rear A/C
4.25 Ibs. (I .927 kg)
6-83
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GASOLINE ENGINES WITH HEAVY DUTY EMISSIONS
- MAINTENANCE SCHEDULE yf
Item Miles (000) 3
No. Kilometers (000) 5 Service
I
1 Engine Oil Change*-Every 3 Months, or t
Oil Filter Change*-Every 3 Months, or t
12 Chassis Lubrication-Every 12 Months, or I+
II
3 Clutch Fork Ball Stud Lubrication (5-speed manual
transmission with deeplow only)
Cooling System Service*-Every 24 Months or
Air Cleaner Filter Replacement* Front Wheel Bearing Repack
Transmission Service
**
Fuel Filter Replacement*
10
11
12
13
14
15
16
17
18
I9
Spark Plugs Replacement*
Spark Plug Wire Inspection*
EGR System Inspection*
Electronic Vacuum Regulator Valve (EVRV)
Inspection*
Engine Timing Checkk
Fuel Tank, Cap and Lines Inspection
*
Thermostatically Controlled Air Cleaner
Inspectionk
Engine Accessory Drive (Serpentine) Belt
Inspection*
Evaporative Control System Inspection*
Shields and Underhood Insulation InspectionA.
20
21
-
23
24
-
Air Intake System InspectionA. I
Brake Systems Inspection** I
* An Emission Control Service
** See “Explanation of Scheduled Maintenance Services” in the Index.
A A Noise Emission Control Service
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.
TO404
7-10
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12.
13.
14.
15.
16.
17.
18.
19.
20.
EGR SYSTEM INSPECTION* - Conduct EGR SYSTEM CHECK
as described in the Service Manual.
ELECTRONIC VACUUM REGULATOR VALVE (EVRV)
INSPECTION*
- Inspect filter for excessive contamination or
plugging. If required, clean element with a solution of biodegradable
soap and water, let dry and reinstall element.
ENGINE TIMING CHECK AND DISTRIBUTOR CHECK (SOME
MODELS)*$
- Adjust timing to underhood label specifications.
Inspect
the inside and outside of the distributor cap and rotor for cracks,
carbon tracking and corrosion. Clean
or replace as needed,
FUEL TANK, CAP AND LINES INSPECTION*$ - Inspect the
fuel tank, cap and lines for damage or leaks. Remove fuel cap, inspect
gasket for an even filler neck imprint, and any damage. Replace parts
as needed.
THERMOSTATICALLY CONTROLLED AIR CLEANER
INSPECTION*A
- (If so equipped.) Inspect all hoses and ducts for
proper hook-up.
Be sure the valve works properly.
SINGLE ENGINE ACCESSORY DRIVE (SERPENTINE) BELT
INSPECTION*
- Inspect belt. Look for cracks, fraying, wear, and
proper tension. Adjust or replace
as needed.
Check all
fuel and vapor lines and hoses for proper hookup, routing,
and condition. Check that the purge valve works properly,
if equipped.
Replace as needed.
SHIELDS AND UNDERHOOD INSULATION INSPECTIONAV
- Inspect shields and underhood insulation for damage or looseness.
Adjust or replace
as required.
AIR INTAKE SYSTEM INSPECTIONAV - Check the air intake
system installation to see that gaskets are sealed properly and all hose
connections, fasteners, and other components are tight. Also check to
be sure that
the air cleaner housing is properly seated, that the cover fits
tightly, and the wing nuts are tight. Tighten connections and fasteners
or replace damaged parts
as required.
'% An Emission Control Service
ANoise Emission Control Service
P'Applicable only to vehicles sold
in the United States
$The California Air Resources Board
has determined that the failure to
perform this maintenance item will not nullify
the emission warranty or
limit recall liability prior to the completion of the vehicle \
useful life.
General Motors, however, urges that
all recommended maintenance
services be performed at the indicated intervals and the maintenance be \
recorded.
EVAPORATIVE CONTROL SYSTEM (ECS) INSPECTION* -
7-20
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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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