Maintenance Schedule
I Short Trip/City Intervals -- Gasoline Engines I
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark
Plug Replacement. Automatic
Transmission Service (normal conditions). Positive
Crankcase Ventilation
(PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first). Follow this maintenance
schedule
only if none of the
conditions from the Short Trip/City Maintenance
Schedule is true.
Do not use this schedule if the vehicle
is used for trailer towing, driven in a dusty area or used
off paved roads. Use the Short Trip/City schedule for
these conditions.
Driving CI Ldzicle r+*ith CI fL1ly warmed engine urzder
highvvcry conditions
causes engine oil to break
dowm slorvcr.
7-6
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Maintenance Schedule
Long TriplHighway Intervals -- Gasoline Engines
Every
7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every 12 months, whichever occurs first).
Chassis Lubrication (or every
12 months, whichever
occurs first). Drive Axle Service. Tire Rotation.
Every 15,000 Miles (25 000 km): Shields and
Underhood Insulation Inspection (GVWR above
8,500 lbs. only).
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement. Front Wheel Bearing Repack
(2WD only) (or at each brake relining, whichever
occurs first).
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (vehicles over
8600 GVWR
or driven under severe conditions only).
I Long; TripMighway Intervals -- Gasoline Engines I
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel Tank, Cap and Lines
Inspection. Exhaust Gas Recirculation System
Inspection. Evaporative Control System Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Automatic
Transmission Service (normal conditions). Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
These intervals only summarize maintenance services.
Be sure to follow the complete maintenance schedule on
the following pages.
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I Short TripKity Maintenance Schedule -- Gasoline Engines I
48,000 Miles (80 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components (or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check constant
An Emission Control Service.
(See footnote #.)
velocity joints and axle seals for leaking. (See footnote *$:.)
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
50,000 Miles (83 000 km)
DATE
I MILEAGE ACTUAL 1 SERVICEDBY I
DATE I
0 Change automatic transmission fluid and filter if the vehicle’s GVWR is over
MILEAGE
ACTUAL SERVICED BY 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
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
IJ’pou do nut ~se your vehicle under NIIY of these cmditions, c.llcmge the.flLric1
und filter at IOO, 000 miles (I 66 000 kn;).
Manual transmission fluid doesn’t require change.
90°F (32°C) or higher.
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I Short Trip/City Maintenance Schedule -- Gasoline Engines I
96,000 Miles (160 000 km) (Continued)
0 Check readfront axle fluid level and add fluid as needed. Check constant
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
velocity
joints and axle seals for leaking. (See footnote
**.)
rotation pattern and additional information. (See footnote +.)
99,000 Miles (165 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Lubricate chassis components (or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check constant
An Emission Control Service.
(See footnote #.)
velocity joints and axle seals for leaking. (See footnote **.)
100,000 Miles (166 000 km)
0 Inspect spark plug wires.
0 Replace spark plugs.
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
An Emission Control Service.
An Emission Control Service.
90°F (32°C) or higher.
DATE I
MILEAGE
DATE MILEAGE
ACTUAL SERVICED BY:
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Long TripMighway Maintenance Schedule =- Gasoline Engines
The services shown in this schedule up to 100,000 miles
(166 000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals. The services shown
at 150,000 miles (240 000
km) should be performed at
the same interval after 150,000 miles (240 000 km).
See “Owner Checks and Services” and “Periodic Maintenance Inspections” following.
Footnotes
The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure
to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to the
completion of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the maintenance
be recorded.
# Lubricate the front suspension, kingpin bushings,
steering linkage, transmission
shift linkage, transfer case
shift linkage, parking brake cable guides, rear driveline
center splines, front axle propshaft spline and brake
pedal springs. Ball joints and kingpin bushings should
not be lubricated unless their temperature is 10°F
(- 12°C) or higher, or they could be damaged.
+ A good time to check your brakes is during tire
rotation. See “Brake System Inspection” under “Periodic
Maintenance Inspections”
in Part C of this schedule.
‘+‘K Drive axle service (see “Recommended Fluids and
Lubricants”
in the Index for proper lubricant to use):
Locking Differential -- Drain fluid and refill at first
engine oil change.
At subsequent oil changes, check
fluid level and add fluid as needed.
0 Standard Differential -- Check fluid level and add
fluid
as needed at every engine oil change.
3500 HD Models with applications requiring
high-speed (above 45 mph or 70 kndh) operation
for
extended periods of time must have the drive axle
fluid changed every 30,000 miles
(50 000 km).
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At Least Twice a Year Manual Transmission Check
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, ha\:e 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 Blactes,
Cleaning"
in the Index.
Air Cleaner Filter Restriction Indicator Check
Your vehicle has an indicator on the engine that lets you
know when the air cleaner filter
is dirty and needs to be
changed. Check indicator at least twice
a year or when
your
oil is changed. See "Air Cleaner" in the Index for
more information. Inspect your air cleaner filter
restriction indicator more often
if the vehicle is used in
dusty areas or under off road conditions. Check the transmission fluid
level; add
if needed. See
"Manual Transmission"
in the Index. Check for leaks.
A fluid loss may indicate a problem. Have the system
inspected and repaired
if needed.
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.
Hydraulic Clutch System Check
Check the fluid level in the clutch reservoir. See
"Hydraulic Clutch Fluid"
in the Index. A fluid loss in
this system could indicate a problem. Have the system
inspected and repaired at once.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified
in Part D.
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Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
Engine Oil
(Gasoline
Engine)
Engine Coolant
~~
Hydraulic Brake
System
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 use only
GM Goodwrench@ DEX-COOL@
or Havoline@ DEX-COOL@
Coolant. See “Engine Coolant” in
the Index.
Delco Supreme
11 @ Brake Fluid
(GM Part
No. 12377967 or
equivalent
DOT-3 Brake Fluid).
USAGE
Hydraulic Clutch
System
Parking Brake
Cable Guides
~
Power Steering System
Manual
Transmission (5-Speed with
Low Gear, RPO
MW3)
Manual
Transmission (5-Speed without
Low Gear,
RPO
MG5)
FLUID/LUBRICANT
Hydraulic Clutch Fluid (GM Part
No. 12345347 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.
GM Power Steering Fluid (GM
Part
No. 1052884 - 1 pint,
1050017
- 1 quart, or equivalent).
GM Goodwrench Synthetic
Manual Transmission Gear Oil
(GM Part No. 12346190
- 1 st.) or
equivalent
SAE 75W-90 GL-4
Gear Oil.
Synchromesh Transmission Fluid (GM Part
No. 12345349 or
equivalent).
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Manual Transmission Check
...................................... 7-41
Fluid
.................................. 6.24, 7.46
Shifting
................................ 2- 18. 2. I9
Starting Your Engine .......................... 2- 13
Manualwindows
............................... 2-32
Memo Pad Holder
......................... 2.55. 2.57
Methanol
...................................... 6- 5
Mirrors ....................................... 2-45
CamperType
................................ 2-48
Convex Outside
.............................. 2-50
Electrochromic Daymight Rearview
.............. 2-46
Inside Daymight Rearview
..................... 2-45
Manual
..................................... 2-48
Power Remote Control
......................... 2-50
WestCoastType
.............................. 2-50
MMT
......................................... 6-4
Model Reference
................................. vi
MountainRoads ................................ 4-34
New Vehicle Break-In
.......................... 2- 10
Nightvision ................................... 4-27
Noise Control System ........................... 6- 13
Normal Maintenance. Normal Replacement Parts
...... 6-78
Odometer
.................................... 2-63
Odometer. Trip
................................. 2-63
Off-Road Driving
.............................. 4- I4
Off-Road Recovery
............................. 4- I I
Oil. Engine ............................... 6-14. 7-46
Opener. Garage Door
............................ 2-51
Overheating Engine ............................. 5- 13 Owner Checks
and Services
....................... 7-40
Owner Publications. Ordering
................ 8- 1 1. 8- 12
Paint Spotting. Chemical
........................ 6-68
Park. Shifting Into
.............................. 2-26
Park. Shifting Out of
............................ 2-29
Parking
AtNight
..................................... 2-9
Brake
...................................... 2-25
Brake Mechanism Check
....................... 7-43
Over Things That Burn
........................ 2-30
With a Trailer ................................ 4-58
Your Vehicle. Manual Transmission
.............. 2-29
Passenger Position
.............................. 1-23
Lots
........................................ 2-9
Passin;
@ ..................................... 4-11
Passlock
................................ 2- 10, 2-73
Periodic Maintenance Inspections
.................. 7-44
Pickup Box Identification Lamp Bulb Replacement
.... 6-47
Pickup Conversion to Chassis Cab
................. 4-48
Power
Accessory Outlet
............................. 2-59
DoorLocks
................................... 2-6
Driver’sSeat ................................. 1-3
Option Fuses
................................ 6-71
Remote Control Mirror
........................ 2-50
Steering ..................................... 4-8
Steering Fluid ........................... 6-33, 7-46
Take-Off .................................... 4-61
Winches
.................................... 4-61
Windows
................................... 2-32
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