Page 361 of 404
Manual transmission fluid doesn’t require change.
DATE ACTUAL MILEAGE SERVICED BY:
52,500 Miles (87 500 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
An Ewissioi1 Control Service.
0 Lubricate chassis components; see footnote ##
(or every 12 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid
as needed. Check constant velocity joints and
axle seals for leaking.
**
0 Rotate tires. See “Tire Inspection and Rotation”
in
the Index for proper rotation pattern and
additional information. During tire rotation,
check brake calipers for freedom of movement.
Refer to the appropriate
GM service manual for
proper caliper service procedures.
~ ~ ~~
DATE ACTUAL MILEAGE SERVICED BY:
ProCarManuals.com
Page 363 of 404

Long Tripmighway Maintenance Schedule -- Gasoline Engines
0 Conduct Exhaust Gas Recirculation (EGR)
system inspection as described
in the
service manual.
An Emissiorz Control Service. 3‘
inspection. Check all fuel and vapor lines
and hoses for proper hook-up, routing and
condition. Check that
the purge valve works
properly, if equipped. Replace
as needed.
0 Conduct evaporative control system
At1 Emission Control Service. -f-
I DATE I ACTUAL MILEAGE ISERVICED BYI
67,500 Miles (112 500 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
An E1uissim Control Service.
0 Lubricate chassis components; see footnote #
(or every 12 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid
as needed. Check constant velocity joints and
axle seals for leaking. **
0 Rotate tires. See “Tire Inspection and Rotation“
in the Index for proper rotation pattern and
additional information. During tire rotation,
check brake calipers for freedom
of movement.
Refer
to the appropriate GM service manual for
proper caliper service procedures.
I DATE I ACTUAL MILEAGE I SERVICED BY:
7-37
ProCarManuals.com
Page 364 of 404

Long Trip/Highway Maintenance Schedule -- Gasoline Engines
75,000 Miles (125 000 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
An Ernission Control Service.
0 Lubricate chassis components; see footnote #
(or every 12 months, whichever occurs first).
0 Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
**
0 Vehicles With GVWR Above 8,500 lbs.
Only: Inspect shields and underhood
insulation for damage
or looseness. Adjust
or replace as required. This is a Noise Emission
Control Service. Applicuble only to vehicles sold in
the United States.
0 If your engine has a thermostatically
controlled cooling fan, inspect all 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. Appliccrble
only to
vehicles
sold in the United States.
DATE ACTUAL MILEAGE SERVICED BY
7-38
ProCarManuals.com
Page 365 of 404

1 Long Tripmighway Maintenance Schedule -- Gasoline Engines I
82,500 Miles (137 500 km)
Change engine oil and filter (or every
12 months, whichever occurs first).
AI? Emissiorz Control Service.
0 Lubricate chassis components; see footnote #
(or every 12 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid
as needed. Check constant velocity joints and
axle seals for leaking.
**
0 Rotate tires. See ‘‘Tire Inspection and Rotation’’
in the Index for proper rotation pattern and
additional information. During tire rotation,
check brake calipers for freedom of movement. Refer to the appropriate
GM service manual for
proper caliper service procedures.
I DATE I ACTUAL MILEAGE lSERVICED BY I
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
An Emission Cmsd Sesvice.
0 Lubricate chassis components;. see footnote #
(or every 12 months, whichever occurs first).
0 Check readfront axle fluid level and add
fluid
as needed. Check constant velocity
joints and axle seals
for leaking. **
0 For Two-Wheel-Drive vehicles only: Clean
and repack
the front wheel bearings (or at
each brake relining, whichever occurs first).
[7 Replace fuel filter. An E~zzission Corztrol Service.
(Continued)
7-39
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Page 366 of 404

Long Tripmighway Maintenance Schedule -- Gasoline Engines I
90,000 Miles (150 000 km) (Continued)
0 Vehicles With GVWR Above 8,500 lbs.
Only: Inspect shields and underhood
insulation for damage or looseness. Adjust
or replace as required. This is (I Noise Emission
Control Service. Applicable
only to vehicles sold if1
the United States.
0 If your engine has a thermostatically
controlled cooling fan, inspect all 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.
Appliccdde only to
vehicles
sold in the United States.
I DATE I ACTUAL MILEAGE ISERVICED BY I
97,500 Miles (162 500 km)
0 Change engine oil and filter (or every
12 months, whichever occurs first).
An Eulission Control Service.
0 Lubricate chassis components; see footnote #
(or every 12 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid
as needed. Check constant velocity joints and
axle seals for leaking.
**
0 Rotate tires. See “Tire Inspection and Rotation”
in the Index for proper rotation pattern and
additional information. During tire rotation,
check brake calipers for freedom of movement.
Refer
to the appropriate GM service manual for
ProDer caber service Procedures.
7-40
ProCarManuals.com
Page 367 of 404

1 Long Tripmighway Maintenance Schedule -- Gasoline Engines I
100,000 Miles (1 66 000 km)
0 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 Con.tro1 Service. 3-
0 Inspect spark plug wires.
0 Replace spark plugs. An Emission Control Service.
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
(32°C) or higher.
An Emission Control Service.
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or
delivery service.
vyou do not ILY~ your- vehicle under my uf
these c*orlditions, the fluid and filter do not
require chwgirzg.
Manual transmission fluid doesn’t require change.
Inspect Positive Crankcase Ventilation
(Pcv) valve. An Enlission Control Service.
DATE ACTUAL MILEAGE SERVICED BY:
ProCarManuals.com
Page 383 of 404

For prompt assistance, please have the following information
available to give the Customer Assistance Representative:
0
0
0
0
0
Your name, address, home and business
telephone numbers
Vehicle Identification Number (This
is available
from the vehicle registration or title, or the plate at
the top left of the instrument panel and visible
through the windshield.)
Dealership name and location
Vehicle delivery date and present mileage
Nature of concern
We encourage
you to call us so we can give your inquiry
prompt attention. However,
if .you wish to write GMC
Truck, write to:
GMC Truck Customer Assistance
3 1 E. Judson Street 1607-04
Pontiac,
MI 48342-2230 Refer
to your Warranty and
Owner Assistance
Information booklet for addresses
of Canadian and GM
Overseas offices.
When contacting GMC Truck, please remember that your
concern will likely
be resolved in the dealership, using the
dealer’s facilities, equipment and personnel. That
is why we
suggest you follow Step One first if you have a concern.
Customer Assistance for Text
Telephone
(TTY) Users
To assist customers who are deaf, hard of hearing,
or speech-impaired and who use Text Telephones
(TTYs),
GMC Truck has TTY equipment available
at its Customer Assistance Center. Any TTY user
can communicate with GMC Truck by dialing:
1-800-GMC-8583. (TTY users in Canada can
dial 1-800-263-3830.)
8-3
ProCarManuals.com
Page 385 of 404

The Roadside Assistance services listed are available
to retail and retail lease customers operating
1996 GMC light duty trucks for a period of
3 years/36,000 miles (60 000 km). All services must
be pre-arranged by GMC Truck Roadside Assistance.
Over-the-phone assistance, such
as providing the name
of the closest dealer or minor technical advice, etc., is
available
to all owner/operators of GMC trucks,
regardless
of vehicle or mileage.
Just dial GMC Truck Roadside Assistance at
1 -800-GMC-TRUCK ( 1-800-462-8782, Roadside
Assistance prompt)
to reach a qualified representative
who can assist you. Your
Roadside Assistance representative
will ask for the
following information when your call
is received:
0 Vehicle Identification Number (VIN)
Name and home address
Telephone number and location from which you
Location, license plate number and color of your
are calling
GMC truck
0 Mileage of vehicle and description of problem
Roadside Assistance
is available 24 hours a day, 7 days
a week, 365 days a year, including weekends and
holidays. Should
you have any questions about roadside
assistance, call the GMC Truck Roadside Assistance
Center or contact your dealer.
Roadside Assistance is not part of or included in the
coverage provicled
by the New Vehicle Limited Wcm-mty.
GMC Truck reserves the right to make my changes or
discontinue the Roadside Assistunce program ut
any
time without notification.
ProCarManuals.com