Page 382 of 411

Long Trip/Highway Scheduled Maintenance
7-43
Diesel Engine Only: Check the air intake system installation to assure that
gaskets are properly sealed and that all hose connections, fasteners and other
components are tight. Also check to be sure that the air cleaner housing is
properly seated and the cover fits tightly. Tighten connections and fasteners or
replace damaged parts as necessary. This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
Diesel Engine Only: If your engine has a thermostatically controlled cooling
fan, inspect hoses and ducts for proper hook
-up (or every 12 months,
whichever occurs first). Be sure the valve works properly. This is a Noise
Emission Control Service. Applicable only to vehicles sold in the
United States.
82,500 Miles (137 500 km)
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #.)
Check axle fluid level and add fluid as needed.
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)ACTUAL
SERVICED BY:MILEAGE
DATE
Page 383 of 411

Long Trip/Highway Scheduled Maintenance
7-44
90,000 Miles (150 000 km)
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #.)
Check axle fluid level and add fluid as needed.
Clean and repack the front wheel bearings (or at each brake relining,
whichever occurs first).
Replace fuel filter.
An Emission Control Service. (See footnote .)
Diesel Engine Only: Replace engine air cleaner filter.
An Emission Control Service.
Gasoline Engine Only: See ªEngine Air Cleaner Filter Restriction Indicator
Checkº in the Index.
Vehicles With GVWR Above 10,000 lbs. Only: Inspect shields for damage or
looseness. Adjust or replace as required. This is a Noise Emission Control
Service. Applicable only to vehicles sold in the United States.
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.) ACTUAL
SERVICED BY:MILEAGE
DATE
Page 384 of 411

Long Trip/Highway Scheduled Maintenance
7-45
Diesel Engine Only: Check the air intake system installation to assure that
gaskets are properly sealed and that all hose connections, fasteners and other
components are tight. Also check to be sure that the air cleaner housing is
properly seated and the cover fits tightly. Tighten connections and fasteners or
replace damaged parts as necessary. This is a Noise Emission Control Service.
Applicable only to vehicles sold in the United States.
Diesel Engine Only: If your engine has a thermostatically controlled cooling
fan, inspect hoses and ducts for proper hook
-up (or every 12 months,
whichever occurs first). Be sure the valve works properly. This is a Noise
Emission Control Service. Applicable only to vehicles sold in the
United States.
97,500 Miles (162 500 km)
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #.)
Check axle fluid level and add fluid as needed.
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)ACTUAL
SERVICED BY:MILEAGE
DATE
Page 385 of 411
Long Trip/Highway Scheduled Maintenance
7-46
100,000 Miles (166 000 km)
Gasoline Engine Only: Inspect spark plug wires.
An Emission Control Service.
Gasoline Engine Only: Replace spark plugs. An Emission Control Service.
Change automatic transmission fluid and filter if the vehicle has a diesel
engine, 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 90F (32C) or higher.
± In hilly or mountainous terrain.
± When doing frequent trailer towing.
± Uses such as found in taxi, police or delivery service.
If you haven't used your vehicle under severe service conditions listed
previously and, therefore, haven't changed your automatic transmission fluid,
change both the fluid and filter.
Gasoline Engine Only (Except 8.1L V8): Inspect Positive
Crankcase Ventilation (PCV) valve.
An Emission Control Service. ACTUAL
SERVICED BY:MILEAGE
DATE
Page 386 of 411
Long Trip/Highway Scheduled Maintenance
7-47
150,000 Miles (240 000 km)
Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº 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. ACTUAL
SERVICED BY:MILEAGE
DATE
Page 397 of 411
7-58
Part E: Maintenance Record
After the scheduled services are performed, record the date, odometer reading and who performed the service in the
boxes provided after the maintenance interval. Any additional information from ªOwner Checks and Servicesº or
ªPeriodic Maintenanceº can be added on the following record pages. Also, you should retain all maintenance receipts.
Your owner information portfolio is a convenient place to store them.
Maintenance Record
DATEODOMETER
READINGSERVICED BYMAINTENANCE PERFORMED
Page 407 of 411

8-8
Courtesy Transportation
GMC has always exemplified quality and value in its
offering of motor vehicles. To enhance your ownership
experience, we and our participating dealers are proud
to offer Courtesy Transportation, a customer support
program for new vehicles.
The Courtesy Transportation program is offered to
retail purchase/lease customers in conjunction with
the Bumper
-to-Bumper coverage provided by the
New Vehicle Limited Warranty. Several transportation
options are available when warranty repairs are
required. This will reduce your inconvenience during
warranty repairs.
Plan Ahead When Possible
When your vehicle requires warranty service, you
should contact your dealer and request an appointment.
By scheduling a service appointment and advising your
service consultant of your transportation needs, your
dealer can help minimize your inconvenience.If your vehicle cannot be scheduled into the service
department immediately, keep driving it until it can be
scheduled for service, unless, of course, the problem
is safety
-related. If it is, please call your dealership,
let them know this, and ask for instructions.
If the dealer requests that you simply drop the vehicle
off for service, you are urged to do so as early in the
work day as possible to allow for same day repair.
Transportation Options
Warranty service can generally be completed while you
wait. However, if you are unable to wait GMC helps
minimize your inconvenience by providing several
transportation options. Depending on the circumstances,
your dealer can offer you one of the following:
Shuttle Service
Participating dealers can provide you with shuttle service
to get you to your destination with minimal interruption of
your daily schedule. This includes a one way shuttle ride
to a destination up to 10 miles from the dealership.
Page 411 of 411

8-12
SERVICE PUBLICATIONS ORDERING INFORMATION
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
Transmission, Transaxle, Transfer Case
Unit Repair Manual
This manual provides information on unit repair
service procedures, adjustments and specifications
for GM transmissions, transaxles and transfer cases.
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.
Owner's Information
Owner publications are written specifically for owners
and intended to provide basic operational information
about the vehicle. The owner's manual will include the
Maintenance Schedule for all models.
Current and 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.
ORDER TOLL FREE: 1-800-551-4123Visit Helm, Inc. on the World Wide Web at: www.helminc.com
Monday-Friday 8:00 AM ± 6:00 PM Eastern Time For Credit Card Orders Only (VISA-MasterCard-Discover)
Helm, Incorporated P.O. Box 07130 Detroit, MI 48207