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Long TripMighway Maintenance Schedule -I Gasoline Engines I
0 Change automatic transmission fluid and filter if the vehicle’s GVWR is
over
8600 lbs. 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
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
(32°C) or
higher.
- Uses such as found in taxi, police or delivery service.
previously and, therefore, haven’t changed your automatic transmission fluid,
change both
the fluid and filter.
An Emission Control Service.
0 If you haven’t used your vehicle under severe service conditions listed
0 Inspect Positive Crankcase Ventilation (PCV) valve.
150,000 Miles (240 000 km)
Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See “Engine Coolant”
in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service.
DATE I
7-37
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At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages are
working properly. Look for any other loose or damaged
safety belt system parts. If
you see anything that might
keep a safety belt system from doing its job, have
it
repaired. Have any torn or frayed safety belts replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag system
does not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace blade
inserts that appear worn or damaged or that streak or
miss areas of the windshield. Also see “Wiper Blades,
Cleaning” in the Index.
Automatic Transmission Check
Check the transmission fluid level; add if needed. See
“Automatic Transmission” in the Index. A fluid
loss may indicate a problem. Check the system and
repair if needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified in Part D.
Body Lubrication Service
Lubricate all hood hinges, hood prop rod pivot, fuel
filler door, rear compartment hinges, latches, locks and
any moving seat hardware. Part
D tells you what to use.
More frequent lubrication may be required when
exposed to a corrosive environment.
7-39
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Part C: Periodic Maintenance
Inspections
Listed below are inspections and services which should
be performed at least twice a year (for instance, each
spring and fall).
You should let pour dealer’s service
department or other qualified service center do these
jobs. Make sure any necessary repairs are completed
at once.
Proper procedures to perform these services may be
found in a service manual. See “Service and Owner
Publications” in the Index.
Steering and Suspension Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack
of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, chafing, etc.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system.
Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in the floor pan or could
let exhaust fumes into
the vehicle. See “Engine
Exhaust”
in the Index.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they are
cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace as needed. Clean the outside
of the radiator and air conditioning condenser. To help
ensure proper operation, a pressure test
of the cooling
system and pressure cap is recommended at least once
a year.
7-42
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Part E: Maintenance Record Any additional information from “Owner Checks and
Services” or “Periodic Maintenance” can be added on
After the scheduled services are performed, record the
the following record pages. Also, you should retain all
date, odometer reading and who performed the service maintenance receipts. Your owner information portfolio
in the boxes Provided after the maintenance interval. is a convenient place to store them.
Maintenance Record
ODOMETER
DATE READING SERVICED
BY MAINTENANCE PERFORMED
7-46
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Maintenance Record
I ODOMETER I
DATE READING SERVICED BY MAINTENANCE PERFORMED
7-47
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Maintenance Record
SERVICED BY
7-48
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1998 GMC SERVICE PUBLICATIONS ORDERING INFORMATION
The following publications covering the operation and servicing of your vehicle can be purchased by filling 01
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.) \
~
CURRENT PUBLICATIONS FOR 1998 GMC
SERVICE MANUALS
Service Manuals have the diagnosis and repair information
on engines, transmission, axle, suspension, brakes,
electrical, steering, body, etc.
RETAIL SELL PRICE:
$90.00
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.
PLEASE COMPLETE THE ORDER FORM SHOWN ON
THE FOLLOWING PAGE AND MAIL TO:
Helm, Incorporated RO. Box 07130 Detroit, MI 48207
OWNER’S INFORMATION
Owner publications are written directly for Owners and
intended to provide basic operational information about th
vehicle. The owner’s manual will include the Maintenance Schedule for all models.
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.
OR ORDER TOLL FREE: 1-800-782-4356
Monday-Friday 8:OO AM - 6:OO PM Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover)
ProCarManuals.com
Page 380 of 388

. -~ ....... -
eaving.Yaur Vehicle with the Engine Running ....... 2-27
ighter
, ...................................... 2-48
ights
I
.
Air Bag Readiness ....................... 1-28. 2-54
Brake System Warning
......................... 2-56
Charging System
............................. 2-54
Check Gages
................................ 2-62
Daytime Running
Lamps Indicator ............... 2-62
Exterior
.................................... 2-40
Interior
..................................... 2-43
Safety Belt Reminder
..................... 1-12. 2-53
Se~~rity 2-61
oadiflg
YOLU Vehicle ........................... 4-27
Anti-Lock Brake System Warning
............ 2-57. 4-7
....................................
.......................... Service Engine Soon 2-58
Locks
......................................... 2-4
Door
........................................ 2-4
Ignition
Transmission Check .................... 7-41 .... .. II . . .:. . i ... ...
..... ................... Power Door * .............. 2-5
Rear Door Security
.. I ..... , ................... 2-5
Sliding
Door Child Security ................. , .. , . 2-6
.. ossofContro1 ..................,............. 4-12
ubricants and Fluids
........................... , 7-44
uhication Service, Body
................... , .... 7-39
'~ .. . .... . _ . ..
Maintenance. NOI-ITMI Replacement parts ........... 6-69
Maintenance Record
............................ 7-46
Maintenance Schedule
............................ 7-1
Long TripMLighway
........................... 7-27
Long Tripmighway Definition
................... 7-6
Long Trip/Highway Intervals
..................... 7-7
Owner Checks and Services ..................... 7-38
Periodic Maintenance Inspections
................ 7-42
Recommended Fluids and Lubricants
............. 7-44
Scheduled Maintenance Services .................. 7-4
Short TripKity
................................ 7-8
Short Trip/City Definition ....................... 7-5
Short TripKity Intervals
........................ 7-5
Maintenance. Underbody
......................... 6-58
Maintenance When Trailer Towing
................. 4-36
Malfunction Indicator Lamp
...................... 2-58
ManualFrontSeat
............................... 1-2
Mirrors ....................................... 2-45
Camper-Type
................................ 2-47
Convex Outside
.............................. 2-46
Inside Daymight Rearview
..................... 2-45
Power Remote Control
......................... 2-45
Visor Vanity
................................. 2-49
MMT ......................................... 6-4
Model Reference
................................. vi
Mountain Roads ................................ 4-21
Multifunction Lever
............................. 2-34
Neutral. Automatic Transmission
................. 2-22
New Vehicle Break-Ii.1 ........................... 2-17
Nightvision
................................... 4-14
Noise Control System
........................... 6-1.1
Normal Maintenance Replacement Parts ............. 6-69
Odometer
.................................... 2-52
Odometer. Trip
................................. 2-52
9-6
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