
Downloaded from www.Manualslib.com manuals search engine 52,500 Miles (87 500 km) (Continued)
0 Rotate tires. See “Tire Inspection and Rotation” in the I\
ndex for proper
0 Inspect the locking front hubs (if equipped) for correct operation (or every
rotation pattern and additional information. (See footnote
+.)
3 months, whichever occurs first). Repair or replace
if necessary.
60,000 Miles (100 000 km)
17
CI
Change engine oil and filter (or every 7.5 months, whichever occurs first).
An Emission Control Service.
For Two-Wheel-Drive vehicles only: Clean and repack the front w\
heel
bearings (or at each brake relining, whichever occurs first).
Change automatic transmission fluid and filter if the vehicle is mainly driven
under one
or more of these conditions:
- In heavy city traffic where the outside temperature regularly reaches
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions, change the fluid
and
filter every 100,000 miles (166 000 km).
Rotate tires. See “Tire Inspection and Rotation” in the I\
ndex for proper
rotation pattern and additional information. (See footnote
+.)
90°F (32°C) or higher.
DATE I
I MILEAGE ACTUAL I SERVICEDBY: I
7-38

Downloaded from www.Manualslib.com manuals search engine Long TripMighway Maintenance Schedule 1
60,000 Miles (100 000 km) (Continued)
0 Inspect the valve lash and adjust if necessary.
0 Check engine idle speed and adjust it to underhood label specifications.
0 Adjust engine timing to underhood label specifications. Inspect \
the inside and
An Emission Control Service.
An Emission Control Service.
(See footnote?.)
outside of the distributor cap and rotor for cracks, carbon tracking and
corrosion. Clean or replace
as needed.
An Emission Control Service.
An Emission Control Service.
(See footnote?’.)
Inspect emission system hoses and replace as necessary.
0 Inspect propeller shafts and u-joints for looseness and damage \
(or every
15 months, whichever occurs first). Inspect more frequently if use\
d off-road
or for pulling a trailer. Tighten u-joint flange bolts if nece\
ssary.
damage
(or every 60 months, whichever occurs first).
An Emission Control Service. (See footnote?.)
An Emission Control Service. (See footnote “f)
An Emission Control Service.
0 Inspect the underhood wiring harness for loose connections, chaf\
ed wires and
0 Replace the camshaft timing belt.
0 Replace spark plug wires (or every 60 months, whichever occurs first).
0 Drain, refill and bleed the brake system.
7-40

Downloaded from www.Manualslib.com manuals search engine Long Tripmighway Maintenance Schedule
90,000 Miles (150 000 km)
Change engine oil and filter (or every 7.5 months, whichever occurs first).
An Emission Control Service.
For Two-Wheel-Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Inspect engine accessory drive belts (or every
24 months, whichever
occurs first).
An Emission Control Service.
occurs first).
0 Replace automatic transmission fluid hose (or every 45 months, whichever
0 Inspect camshaft timing belt.
Change automatic transmission fluid and filter if the vehicle is mainly driven
An Emission Control Service. (See footnote "f)
under one or more of these conditions:
- In heavy city traffic where the outside temperature regularly r\
eacnes
- In hilly or mountainous terrain.
90°F (32°C) or higher.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions, change the fluid
andfilter every
l00,OOO miles (166 000 km).
(Continued)
I DATE I
7-43

Downloaded from www.Manualslib.com manuals search engine Starter Switch Check Brake-Transmission Shift Interlock (BTSI) Check
(Automatic Transmission)
’ A CAUTION: I
When you are doing this check, the vehicle could
move suddenly. If it does, you
or others could be
injured. Follow the
steps below.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake (see “Parking
Brake” in the Index if necessary) and the regular brake.
NOTE:
Do not use the accelerator pedal, and be
ready to turn
off the engine immediately if it starts.
3. On automatic transmission vehicles, try to start the
engine
in each gear. The starter should work only in
PARK
(P) or NEUTRAL (N). If the starter works in
any other position, your vehicle needs service.
On manual transmission vehicles, put the shift
lever
in NEUTRAL (N), push the clutch down halfway
and try to start the engine. The starter should work
only when the clutch is pushed down all the way to
the floor.
If the starter works when the clutch isn’t
pushed all the way down, your vehicle needs service.
A CAUTION:
When you are doing this check, theqehicle could
I
move suddenly. If it does, you or others could be
injured. Follow the steps below.
I
1. Before you start, be sure you have enough room around the vehicle. It should be parked on a
level surface.
2. Firmly apply the parking brake (see “Parking Brake”
in the Index
if necessary).
NOTE: Be ready to apply the regular brake
immediately if the vehicle begins to move.
3. With the engine off, turn the key to the
ON position,
but don’t start the engine. Without applying the
regular brake, try to move the shift lever out of
PARK (P) with normal effort. If the shift lever
moves out of PARK (P), your vehicle’s BTSI
needs service.
7-49
-

Downloaded from www.Manualslib.com manuals search engine Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to
LOCK in each shift lever position.
With an automatic transmission, the key should turn
to LOCK only when the shift lever is in PARK (P).
0 With a manual transmission, the key should turn to
LOCK only if you push the key in farther, while
turning it towards LOCK.
On vehicles with a key release lever,
try to turn the key
to LOCK without pressing the lever. The key should
turn to
LOCK only when you press the key lever.
On all vehicles, the key should come out only in LOCK.
Parking Brake and Automatic Transmission
PARK (P) Mechanism Check
A C [TION:
I
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front
of your vehicle in case
it begins to roll.
Be ready to apply the regular
brake at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set
the parking brake.
0
0
To check the parking brake’s holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure
from the regular brake pedal.
Do this until the
vehicle is held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK
(P).
Then release all brakes. If your vehicle is
four-wheel drive, be sure the transfer case is
not in NEUTRAL
(N).
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care
to clean thoroughly any areas where mud and other
debris can collect.
7-50

Downloaded from www.Manualslib.com manuals search engine Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged
or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator and
cruise control cables.
Rear Axle (All) and Front Axle
(Four-wheel Drive) Service
Check the gear lubricant level and add if needed. See
“Rear Axle” and “Four-wheel Drive” in the Index. A
fluid loss may indicate a problem. Check the system(s),
and repair the system(s) if needed. Refer to “Scheduled
Maintenance Services,” earlier
in this section, to
determine when to change the lubricant.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including
drums, wheel cylinders, calipers, parking brake, etc.
Check parking brake adjustment.
You may need to have
your brakes inspected more often if your driving habits
or conditions result in frequent braking.
Clutch System Service
Check clutch pedal free travel and adjust as necessary.
See “Clutch Adjustment” in the Index.
7-52

Downloaded from www.Manualslib.com manuals search engine Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
FLUIDLUBRICANT
Engine Oil with the American
Petroleum Institute Certified
For Gasoline Engines “Starburst” symbol of the
proper viscosity. To determine the preferred viscosity for your
vehicle’s engine, see “Engine
Oil” in the Index.
50/50 mixture of clean water
(preferably distilled) and good
quality Ethylene Glycol Base
Coolant (GM Part
No. 1052753
or equivalent) conforming to
GM Specification 1825M or
approved recycled coolant
conforming to GM
Specification 1825M. See
“Engine Coolant” in the Index.
USAGE
Hydraulic Brake
System
Parking Brake Cable
Guides
Power Steering System
Manual
Transmission (All) and Transfer Case
(Four-Wheel-Drive)
Automatic
Transmission
~
Key Lock Cylinders
FLUIDLUBRICANT
Delco Supreme 11@ Brake
Fluid (GM Part No. 12377967
or equivalent DOT-3 Brake
Fluid).
Chassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI
# 2, Category LB
or GC-LB.
DEXRON@-I11 Automatic
Transmission Fluid.
GM Goodwrench Synthetic
Manual Transmission Gear Oil
quart) or equivalent SAE
75W-90
GL-4 Gear Oil.
DEXRON@-I11 Automatic
Transmission Fluid.
Multi-Pu ose Lubricant,
Superlube
% (GM Part
No. 12346241 or equivalent).
(GM Part
NO. 12346190 - 1

Downloaded from www.Manualslib.com manuals search engine 1998 CHEVROLET SERVICE PUBLICATIONS ORDERING INFORMATIOh
The following publications covering the operation and servicing of your vehicle can be purchased by filling om
the Service Publication Order Form in this book and mailing it in with your check, money order,
or credit card information to Helm, Incorporated (address below\
.)
SERVICE MANUALS
CURRENT PUBLICATIONS FOR 1998 CHEVROLET
OWNER’S INFORMATION
Service Manuals have the diagnosis and repair information Owner publications are written directly for Owners ana
on engines, transmission, axle, suspension, brakes, intended
to provide basic operational information about tt
electrical, steering, body, etc. vehicle. The owner’s
manual will include the Maintenancc
RETAIL SELL PRICE:
$90.00 Schedule for all models.
TRANSMISSION, TRANSAXLE, TRANSFER CASE
UNIT
REPAIR MANUAL
This manual provides information on unit repair service
procedures, adjustments and specifications for the
1998 GM transmissions, transaxles and transfer cases.
RETAIL SELL PRICE:
$40.00
SERVICE BULLETINS
Service Bulletins give technical service information needed
to knowledgeably service General Motors cars and trucks.
Each bulletin contains instructions to assist in the
diagnosis and service of your vehicle. In-Portfolio: Includes a
Portfolio, Owner’s Manual and
Warranty Booklet. RETAIL SELL PRICE:
$1 5.00
Without Portfolio: Owner’s Manual only.
RETAIL SELL
PRICE: $1 0.00
CURRENT & PAST MODEL ORDER FORMS
Service Publications are available for current and past
model GM vehicles. To request an order form, please
specify year and model name of the vehicle.