
Maintenance Schedule................................ 360
Introduction............................................... 360
Maintenance Requirements........................ 360
Your Vehicle and the Environment............ 360
How This Section is Organized................. 360
Part A: Scheduled Maintenance Services.... 362
Using the Maintenance Schedule............... 362
Scheduled Maintenance Supplements........ 363Scheduled Maintenance............................. 363
Part B: Owner Checks and Services......... 391
At Each Fuel Fill....................................... 391
At Least Twice a Year.............................. 392
At Least Once a Year............................... 396
Part C: Recommended Fluids
and Lubricants....................................... 397
Part D: Maintenance Record..................... 400
Section 6 Maintenance Schedule
359

Maintenance Schedule
Introduction
Important: Keep engine oil at the proper level
and change as recommended.
Have you purchased the GM Protection Plan? The
Plan supplements your new vehicle warranties.
See your Warranty and Owner Assistance booklet
or your dealer for details.
Maintenance Requirements
Maintenance intervals, checks, inspections and
recommended fluids and lubricants as prescribed
in this manual are necessary to keep your
vehicle in good working condition. Any damage
caused by failure to follow scheduled maintenance
may not be covered by warranty.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to
keep your vehicle in good working condition, but
also helps the environment. 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, be
sure to maintain your vehicle properly.
How This Section is Organized
This maintenance schedule is divided into
four parts:
“Part A: Scheduled Maintenance Services”
explains what to have done and how often. Some
of these services can be complex, so unless
you are technically qualified and have the
necessary equipment, you should let your GM
dealer’s service department do these jobs.
Your GM dealer has GM-trained and supported
service people that will perform the work using
genuine GM parts.
360

Part A: Scheduled Maintenance
Services
In this part are scheduled maintenance services
which are to be performed at the mileage intervals
specified.
Using the Maintenance Schedule
We at General Motors want to help keep
your vehicle in good working condition. But we do
not know exactly how you will drive it. You may
drive very short distances only a few times a week.
Or you may drive long distances all the time in
very hot, dusty weather. You may use your vehicle
in making deliveries or in many other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may
need more frequent checks and replacements.
So please read the following and note how
you drive. If you have any questions on how to
keep your vehicle in good condition, see your
dealer.
This part tells you the maintenance services you
should have done and when to schedule them.When you go to your dealer for your service
needs, you will know that GM-trained and
supported service people will perform the work
using genuine GM parts.
The proper fluids and lubricants to use are listed
in Part C. Make sure whoever services your
vehicle uses these. All parts should be replaced
and all necessary repairs done before you or
anyone else drives the vehicle.
This schedule is for vehicles that:
•carry passengers and cargo within
recommended limits. You will find limits
on your vehicle’s Certification or Tire
Information label. SeeLoading Your Vehicle
on page 238.
•are driven on reasonable road surfaces within
legal driving limits.
•use the recommended fuel. SeeGasoline
Octane on page 251for gasoline engine
vehicles orWhat Fuel to Use on page 253
for diesel engine vehicles.
362

Scheduled Maintenance
Supplements
If your vehicle has a Caterpillar®diesel engine,
your owner’s manual is supplemented by the
Caterpillar
®Diesel Engine Operation &
Maintenance Manual. If your vehicle has an
Allison Transmission
®, your owner’s manual is
supplemented by an Allison Transmission®
Operator’s Manual. Always refer to these manuals
for related maintenance services.
Scheduled Maintenance
The services shown in this schedule up to
100,000 miles (166 000 km) should be repeated
after 100,000 miles (166 000 km) at the same
intervals for the life of this vehicle. The services
shown after 100,000 miles (166 000 km) should
be repeated at the same miles (km) after
those intervals for the life of this vehicle.Gasoline engine vehicles and some DURAMAX
®
diesel and Isuzu 6H diesel engine vehicles have a
computer that lets you know when to change the
engine oil. This is not based on mileage, but on
engine operation and engine temperature. When
the computer has calculated that the oil needs
changing, the Engine Oil Life System will indicate
that a change is necessary. SeeEngine Oil Life
System (Gasoline Engine) on page 276orEngine
Oil Life System (DURAMAX
®Diesel) on page 278
orEngine Oil Life System (Caterpillar®Diesel
Engine) on page 279.
The “Footnotes” at the end of this Maintenance
Schedule further explain maintenance services.
SeeService Publications Ordering Information
on page 415.
100 Miles (160 km)
❑Wheel stud nut service.(36)
1,000 Miles (1 600 km)
❑Wheel stud nut service.(36)
❑Rear axle air shift motor service.(10)
363

Part D: Maintenance Record
After the scheduled services are performed, record the date, odometer reading and who performed the
service, and any additional information from “Owner Checks and Services” on the following record pages.
Also, you should retain all maintenance receipts.
DateMiles/km Or
HoursServiced By Maintenance Record
400

Owner Information
Owner publications are written specifically for
owners and intended to provide basic operational
information about the vehicle. The owner manual
will include the Maintenance Schedule for
all models.
In-Portfolio: Includes a Portfolio, Owner Manual,
and Warranty Booklet.
RETAIL SELL PRICE: $35.00 US +
Processing Fee
Without Portfolio: Owner’s Manual only.
RETAIL SELL PRICE: $25.00 US +
Processing Fee
Current and Past Model Order Forms
Technical Service Bulletins and Manuals are
available for current and past model GM vehicles.
To request an order form, please specify year
and model name of the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc.
on the World Wide Web at: www.helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and
without incurring obligation. Allow ample time
for delivery.
Note to Canadian Customers: All listed prices
are quoted in U.S. funds. Canadian residents
are to make checks payable in U.S. funds.
416

L
Lamps
Dome....................................................... 153
Exterior.................................................... 150
Marker..................................................... 152
Reading................................................... 154
LATCH System
Child Restraints......................................... 57
Light
Airbag Off................................................ 166
Airbag Readiness..................................... 165
Anti-Lock Brake System Warning............. 172
Brake System Warning............................. 169
Change Engine Oil................................... 176
Charging System..................................... 167
Check Gages Warning............................. 180
Daytime Running Lamps Indicator............ 179
Differential Lock Indicator......................... 178
Engine Overspeed Warning...................... 177
Engine Shutdown Warning....................... 177
Exhaust Brake Indicator........................... 178
Highbeam On.......................................... 179
Low Coolant Warning............................... 173
Low Oil Level........................................... 176
Low Washer Fluid Warning...................... 180
Malfunction Indicator................................ 174Light (cont.)
Range Inhibit Warning Indicator................ 169
Reduced Engine Power............................ 179
Safety Belt Reminder............................... 164
Safety Belt Reminder Tone...................... 164
Service Transmission Warning.................. 168
Trailer Anti-Lock Brake System Warning ... 172
Wait to Start Indicator.............................. 174
Water in Fuel Warning............................. 182
Lighting
Entry........................................................ 154
Loading Your Vehicle................................... 238
Locks
Door.......................................................... 91
Power Door............................................... 92
Loss of Control........................................... 221
Low Coolant Warning Light.......................... 173
Low Washer Fluid Warning Light................. 180
M
Maintenance, Normal Replacement Parts.... 352
Maintenance Schedule
At Each Fuel Fill...................................... 391
At Least Once a Year.............................. 396
At Least Twice a Year.............................. 392
How This Section is Organized................ 360
424

Maintenance Schedule (cont.)
Introduction.............................................. 360
Maintenance Requirements...................... 360
Part A - Scheduled Maintenance
Services............................................... 362
Part B - Owner Checks and Services....... 391
Part C - Recommended Fluids and
Lubricants............................................. 397
Part D - Maintenance Record.................. 400
Scheduled Maintenance........................... 363
Scheduled Maintenance Supplements...... 363
Using....................................................... 362
Your Vehicle and the Environment............ 360
Malfunction Indicator Light........................... 174
Manual Transmission
Fluid........................................................ 283
Operation................................................. 116
Manual Windows........................................... 93
Marker Lamps............................................. 152
Mirrors
Manual Rearview Mirror........................... 133
Outside Convex Mirrors............................ 134
Outside Heated Mirrors............................ 134
Outside Manual Mirrors............................ 133
Outside Power Mirrors............................. 133N
New Vehicle Break-In.................................... 95
Noise Control System, Tampering ................ 314
Normal Maintenance Replacement Parts..... 352
O
Odometer.................................................... 163
Odometer, Trip............................................ 163
Off-Road Recovery...................................... 219
Oil
Change Engine Oil Light.......................... 176
Engine............................................268, 272
Low Oil Level Light.................................. 176
Pressure Gage......................................... 175
Oil, Engine Oil Life System........276, 278, 279
Older Children, Restraints............................. 42
Other Service Items
Air Conditioning System........................... 320
Automatic Ether Injection System............. 318
Front Wheel Bearings with
Oil-Filled Hubs...................................... 319
Fuel Filter................................................ 317
425