1994 CHEVROLET SUBURBAN check engine

Surge Tank Pressure Cap- Diesel Engines
The surge tank
pressure cap must be
tightly installed with
the arrows
on the cap
lined up with the top
tube
of the coolant
surge tank.
NOTICE:
Your surge tank pressure cap 1s a unique 15 psi (105 kPa)
pressure-type cap for use with surge tank cooling systems only.
It must be tightly installed to prevent coolant loss and possible
engine damage from overheating. Be sure the arrows on the cap
line up with the top tube
of the coolant surge tank.
Thermostat
Engine coolant temperature is controlled by a thermostat in the engine
coolant system. The thermostat stops the flow
of coolant through the
radiator until the coolant reaches a preset temperature.
When you replace your thermostat, an
AC@ thermostat is recommended.
Power Steering Fluid
I NOTICE:
Always turn the engine off before checking or adding power
steering
fluid. The power steering pump cap is close to the fan
and other moving parts.
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How To Check Power Steering Fluid
l
Unscrew the cap and
wipe the dipstick with
a clean rag. Replace
the cap and
completely tighten it.
Then remove the cap
again and look
at the
fluid level on the
dipstick.
0 When the engine
compartment is
hot, the level
should
be at the
FULL mark.
When the engine
compartment is
cool, the
level
should be at the
FULL COLD
mark.
Whaf fo Add
Refer to the Maintenance Schedule to determine what kind of fluid to use.
See “Recommended Fluids and Lubricants” in the Index.
NOTICE:
When adding power steering fluid or making a complete fluid
change, always
use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and
seals.
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To Check Brake Fluid
m You can check the
brake fluid without
taking off the cap. Just
look at the windows
on the brake fluid
reservoir. The fluid
levels should be above
“MIN.” If they aren’t,
have your brake
system checked to see
if there is a leak.
After work is done on the brake hydraulic system, make sure the levels are
above
‘“IN‘’ and below the top of each window.
What to Add
When you do need brake fluid, use only DOT-3 brake fluid - such as
Delco Supreme
ll@ (GM Part No.1052535). Use new brake fluid from a
sealed container only, and always clean the brake fluid reservoir cap before
removing it.
0 Don’t let someone put in the wrong kind of fluid. For
example, just
a few drops of mineral-based oil, such as engine
oil, in your brake system can damage brake system parts
so
badly that they’li have to be replaced.
Brake fluid can damage paint, so be careful not to spill brake
fluid
on your vehicle. If you do, wash it off immediately. See
“Appearance Care”
in the Index.
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Wheel Nut Torque
For vehicles with dual wheels, when the vehicle, wheel or fasteners are new,
have the torque set at
the first 100, 1,000 and 6,000 miles (160, 1600 and
9600 km). Use the torque specified in the appropriate Specification Chart
later
in this section.
Single Belt Accessory Drive
If your new vehicle uses a serpentine belt, it is lighter, and more durable
than systems with several belts.
The belt
ruIl 'li'vkf br iir6und the pulleys or^ the engine. A tensione'r'n'iay be
used to keep the belt tight at all times. The tensioner also makes replacing
the belt easier
if you need to replace the belt, be sure to get the correct
replacement belt. Your dealership
or parts supplier can help you with this.
The Accessory Drive Belt Routing label on your vehicle will show you how
to route the belt your vehicle uses.
Windshield Wiper Blade lnserts
To replace your
windshield wiper
blade inserts, lift the
wiper arm and rotate
the blade until
it is
facing
away from the
windshield.
Unlatch the end
of the insert from the holding clips. Remove the insert and
slide
a new one in place. Make sure the blade is secured in the clips.
Air Conditioning
Every now and then have your dealership check your air conditioning
system to be sure
it has not lost any cooling ability. If you think the system
is not working properly, have your dealership check it out as soon as
possible.
The air conditioning will not work when the temperature
is below 40°F
(4°C).
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Fluid Leak Check
After the vehicle has been parked for a while, inspect the surface under the
vehicle for water, oil, fuel or other fluids. Water dripping from the air
conditioning system after it has been used is normal. If you notice fuel leaks
or fumes, the causes should be found and corrected at once.
Lubrication
Accelerator Control System
Your maintenance schedule will tell you how often the accelerator linkage
pivot points must be lubricated. See “Recommended Fluids and Lubricants”
in
the Index for the proper lubricant to use.
Accelerator cables and cruise control cables should not be lubricated. Any
cables that are worn or
are hard to pull should be replaced.
Hood Latches and Hood Hinge
Your maintenance schedule will tell you how often to lubricate the hood
latch and hood hinge assembly. See the Index under “Recommended Fluids
and Lubricants” for the proper lubricant to use.
Propeller Shaft Slip Splines
See your maintenance schedule to find out how often the slip splines must
be lubricated. See “Recommended Fluids and Lubricants” in the Index for
the proper lubricant to use.
Constant Velocity Joints
See your maintenance schedule to find out how often the constant velocity
joints must be lubricated. See “Recommended Fluids and Lubricants” in the
Index for the proper lubricant to use.
Normal
use of your vehicle will cause metal to metal wear at some points on
the cab and body if they are not lubricated.
For exposed surfaces, such
as door checks, door lock bolts, lock striker plates,
dovetail bumper wedges, etc., a thin
film of engine oil should be applied.
The seat adjusters and seat track should be lubricated
with chassis grease.
Door weather strips and rubber hood bumpers should be lightly coated with
a rubber lubricant.
Never use too much of any lubricant and be sure to wipe up any extra
lubricant when you are finished.
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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.
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LAMP OR BULB
INSTRUMENT
P ANEL
Transmission Indicator (PRNDL)
Daytime Running Lights Indicator?'
Charging System Indicator Lamp
Instrument Cluster Illumination -Gage
Cluster
Instrument Cluster Illumination
-Tachometer Cluster
Headlamp Beam Indicator
Directional Signal Indicator
Brake Warning Indicator
Safety Belt Warning
Check Gages Indicator Malfunction Indicator ("Service Engine
Soon") Lamp
Upshift Indicator
Glow Plugs Lamp*:"
Low Coolant Lamp**
Water
in Fuel Lamp**
Service Throttle
Soon Lamp**
'k*Diesel only
'fCanadian Vehicles only
TRADE NO.
161 74
74
194
194 74
74
74
74
74 74
74
74 74
74
74
6
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Scheduled Maintenance Services
Section
This section covers the maintenance required for your General Motors
vehicle
. Your vehicle needs these services to retain it’s safety. dependability.
and emission control performance
.
A Word About Maintenance .................................. 7-3
Your Vehicle and
the Environment ............................. 7-3
Recording Maintenance Services
............................... 7-3
Scheduled Maintenance Services
............................... 7-4
Selecting Your Vehicle’s Maintenance Services ........ ..... 7-4
Maintenance Schedule I ................................ 7-6
Maintenance Schedule
I1 ..................... ......... 7-8
Maintenance Schedule
I .........................
Maintenance Schedule I1 ...... ...............
Maintenance Schedule I ............................... 7-14
Maintenance Schedule
I1 ............................... 7-16
Explanation
of Scheduled Maintenance Services ............... 7-18
Owner Checks and Services .................................. 7-22
Recommended Fluids
& Lubricants ........................... 7-25
Maintenance Record
....................................... 7-27
Service Sta.tion Checks
..................................... 7-28
Gasoline Engines with Light Duty Emissions .
Gasoline Engines with Heavy Duty Emissions .
Diesel Engines .
.... 7-10
...... 7-12
Protection
Plan
Have you purchased the GM Protection Plan? The Plan supplements
the new vehicle warranties
. See your GM dealer for details .
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