1998 CHEVROLET EXPRESS oil level

Downloaded from www.Manualslib.com manuals search engine Be sure to fill it enough to put the level somewhere in
the proper operating range. Push the dipstick all the way
back in when you’re through. RECOMMENDED SAE YlSCOSllY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
SAE VISCOSITY GRADE
011 FOR THE EXPECTED TEMPERATURE RANGE.
What Kind of Engine Oil to Use
LOOK
FOR MIS atfi
SYMBOL
Oils recommended for your vehicle can be identified
by looking
for the “Starburst” symbol. This symbol
indicates that the oil has been certified by the American
Petroleum Institute (API).
Do not use any oil which
does not carry this Starburst symbol.
HOT
WEATHER
t
A
J I
I
1f you change your own
oil, be sure you use oil that
has the Starburst symbol
on the front of the oil
container.
If you have your
oil changed
for you, be sure
the oil put
into your engine
is American Petroleum
Institute certified for
gasoline engines.
.
SAt d-30 PREFERRED
COLD
WEATHER You should also use the proper viscosity oil for your
vehicle, as shown in the following chart:
DO NOT USE ME 20W.50 OR ANY OTHER GRADE OIL NOT RECOMMENDED I

Downloaded from www.Manualslib.com manuals search engine 5. Install a new filter element with the folds in the
down position.
Reverse Steps 1 through
4 to replace the air cleaner.
See “Normal Replacement Parts” for the proper filter
to use.
Refer to the Maintenance Schedule
to determine when to
replace the air filter and crankcase ventilation filter.
See “Scheduled Maintenance Services” in the Index.
I /!1 CAUTION:
Operating the engine with the air cleaner off can
cause
you or others to be burned. The air cleaner
not only cleans the air, it stops flame
if the engine
backfires.
If it isn’t there, and the engine
backfires, you could be burned. Don’t drive with
it
off, and be careful working on the engine with
the air cleaner
off.
I NOTICE: I
If the air cleaner is off, a backfire can cause a
damaging engine fire. And, dirt can easily get
into your engine, which will damage it. Always
have the air cleaner in place when you’re driving.
Automatic Transmission Fluid
If your vehicle has a diesel engine, see “Automatic
Transmission Fluid” in the Diesel Supplement.
When to Check and Change
A good time to check your automatic transmission fluid
level is when the engine oil
is changed.
Change both the fluid and filter every
50,000 miles
(83 000 km) if the vehicle’s GVWR is over 8,600 or
if the vehicle
is mainly driven under one or more of
these conditions:
In heavy city traffic where the outside temperature
regularly reaches
90” F (32” C) or higher.
In hilly or mountainous terrain.
0 When doing frequent trailer towing.
6-17

Downloaded from www.Manualslib.com manuals search engine Rear Axle What to Use
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how
often
to check the lubricant and when to change it. See
“Scheduled Maintenance Services” in the Index.
How to Check Lubricant
If the level is below the
bottom
of the filler plug
hole, you’ll need to add
some lubricant. Add enough
lubricant to raise the level
to the bottom of the filler
plug hole. Refer
to the Maintenance Schedule to determine what
kind of lubricant to use. See “Recommended Fluids and
Lubricants” in the Index.
Engine Coolant
The cooling s stem in your vehicle is filled with
DEX-COOL engine coolant. This coolant is designed
to remain in your vehicle for
5 years or 150,000 miles
(240
000 kmg whichever occurs first, if you add only
DEX-COOL extended life coolant.
8
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see “Engine Overheating” in the
Index.
A 50/50 mixture of water and DEX-COOL@
coolant will:
0 Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265 “F (1 29” C).
Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights and gages work as
they should.

Downloaded from www.Manualslib.com manuals search engine After work is done on the brake hydraulic system,
make sure the level is above the
MIN but not over
the
MAX mark or the top of the window on the side
of the reservoir.
What to Add
When you do need brake fluid, use only DOT-3 brake
fluid
-- such as Delco Supreme ll@ (GM Part
No. 12377967). Use new brake fluid from a sealed
container only.
Always clean the brake fluid reservoir cap and the
area
around the cap before removing it. This will help keep
dirt from entering the reservoir.
A CAUTION:
With the wrong kind of fluid in your brake
system, your brakes may not work well, or they
may not even work at all. This could cause a
crash. Always use the proper brake fluid.
NOTICE:
Using the wrong fluid can badly damage
brake system parts. 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’ll have to be
replaced. Don’t let someone put in the
wrong kind of fluid.
If you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake
fluid on your vehicle.
If you do, wash it off
immediately. See “Appearance Care” in
the Index.
6-29

Downloaded from www.Manualslib.com manuals search engine Cooling System Capacity (Approximate)
ENGINE VIN QTY Without Rear Heater
“VORTEC”4300 W 1 1 Quarts ( 10.4 L)
“VORTEC”5000 M 17 Quarts (16 L)
“VORTEC”5700 R 17 Quarts (1 6 L)
“VORTEC”7400 J 23 Quarts (2 1.8 L)
QTY With Rear Heater
14 Quarts (13.2 L)
20 Quarts (18.9 L)
20 Quarts (18.9 L)
26 Quarts (24.6 L)
After refill, the level MUST be checked as outlined under “Engine Cooling System” in Section 5.
Crankcase Capacity (Approximate)
ENGINE VIN Quantity With Filter
“VORTEC”4300 W 4.5 Quarts (4.3 L)
“VORTEC”5000 M 5 Quarts (4.8 L)
“VORTEC”5700 R 5 Quarts (4.8 L)
“VORTEC”7400 J 6.6 Quarts (6.24 L)
After refill, the level MUST be rechecked. Add enough engine oil so that the fluid is within the proper operating
range. See “Engine Oil” in the Index.
*Add one additional quart for RPO 5Z1 and
RPO KL5 Models.
6-68

Downloaded from www.Manualslib.com manuals search engine I
IMPORTANT:
KEEP ENGINE OIL
AT THE PROPER
LEVEL AND CHANGE
RECOMMENDED
Introduction
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
vehicle in good working condition, but also helps the
environment. All recommended maintenance procedures
are important. Improper vehicle maintenance can even
affect the quality of the air we breathe. Improper fluid
levels or the wrong tire inflation
can increase the level
of emissions from your vehicle. To help protect our
environment, and to keep your vehicle in good
condition, please maintain your vehicle properly.
Have you purchased the GM Protection Plan? The Plan
supplements
your new vehicle warranties. See your
Warranty and Owner Assistance booklet, or your
GM
dealer for details.
7-2

Downloaded from www.Manualslib.com manuals search engine Short Trip/City Maintenance Schedule -- Gasoline Engines
The services shown in this schedule up to 100,000 miles
(166 000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals. The services shown
at 150,000 miles (240
000 km) should be performed at
the same interval after 150,000 miles (240
000 km).
See “Owner Checks and Services” and “Periodic
Maintenance Inspections” following.
Footnotes
The U.S. Environmental Protection Agency or 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’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the maintenance
be recorded.
# Lubricate the front suspension, kingpin bushings,
steering linkage and rear driveline center splines.
+ A good time to check your brakes is during tire
rotation. See “Brake System Inspection” under “Periodic
Maintenance Inspections” in
Part C of this schedule.
* * Drive axle service (see “Recommended Fluids and
Lubricants” in the Index for proper lubricant to use):
0
0
0
Locking Differential -- Drain fluid and refill at first
engine oil change. At subsequent oil changes, check
fluid level and add fluid as needed. If driving in
dusty areas or towing a trailer, drain fluid and refill
every 15,000 miles (25
000 km).
Standard Differential -- Check fluid level and add
fluid as needed at every oil change. If driving in
dusty areas
or towing a trailer, drain fluid and refill
every 15,000 miles
(25 000 km).
More frequent lubrication may be required for
heavy-duty use.
7-8

Downloaded from www.Manualslib.com manuals search engine I Short TripKity Maintenance Schedule -- Gasoline Engines I
3,000 Miles (5 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components (or every 3 months, whichever occurs first).
0 Check axle fluid level and add fluid as needed. (See footnote **.)
An Emission Control Service.
(See footnote #.)
6,000 Miles (10 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components (or every 3 months, whichever occurs first).
0 Check axle fluid level and add fluid as needed. (See footnote **.)
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
An Emission Control Service.
(See footnote #.)
9,000 Miles (15 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components (or every 3 months, whichever occurs first).
Check axle fluid level and add fluid as needed. (See footnote **.)
An Emission Control Service.
(See footnote #.)
DATE I -~
SERVICED BY:
n4TE I
MILEAGE
7-9