Page 347 of 374

Long Trip/Highway Scheduled Maintenance
7-42
90,000 Miles (150 000 km) (Continued)
Change automatic transmission fluid and filter 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 do not use your vehicle under any of these conditions, change the fluid
and filter every 100,000 miles (166 000 km).
Drain, flush and refill cooling system (or every 30 months, 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. (See footnote .)
Replace spark plugs.
An Emission Control Service.
Replace engine air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote .)
Page 349 of 374
Long Trip/Highway Scheduled Maintenance
7-44
100,000 Miles (166 000 km)
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.
Replace Positive Crankcase Ventilation (PCV) valve. Replace any worn,
plugged or collapsed hoses.
An Emission Control Service.
Inspect Exhaust Gas Recirculation (EGR) system.
An Emission Control Service.
Replace evaporative emissions canister.
An Emission Control Service. ACTUAL
SERVICED BY:MILEAGE
DATE
Page 351 of 374

7-46 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 ªWiper Blades,
Cleaningº in the Index.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. (See ªRecommended Fluids and Lubricantsº
in the Index.)Fluid Level Check
Check the transfer case, axle differential(s) and
automatic or manual transmission fluid levels and
add as needed. See ªTransfer Case,º ªAxle, Rear,º
ªAxle, Frontº and ªAutomatic Transmissionº or
ªManual Transmissionº in the Index. Check for leaks.
A fluid loss in these systems 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.
Body Lubrication Service
Lubricate all body door hinges. Also lubricate all
hinges and latches, including those for the hood, rear
compartment, glove box door, console door and any
folding seat hardware. Part D tells you what to use.
More frequent lubrication may be required when
exposed to a corrosive environment.
Page 356 of 374

7-51
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
FLUID/LUBRICANT
Engine OilEngine 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 ªEngine Oilº in
the Index.
Engine Coolant50/50 mixture of clean,
drinkable water (preferable
distilled) and good quality
Ethylene Glycol Base Coolant
(GM Part No. 1052753 or
equivalent) conforming to
GM Specification 1825M or
approved recycled coolant
conforming to GM
Specification 1825M. See
ªEngine Coolantº in the Index.
USAGEFLUID/LUBRICANT
Hydraulic
Brake SystemDelco Supreme 11 Brake
Fluid (GM Part No. 12377967
or equivalent DOT
-3
Brake Fluid).
Windshield
Washer SolventGM Optikleen Washer
Solvent (GM Part
No. 1051515) or equivalent.
Hydraulic
Clutch SystemHydraulic Clutch Fluid
(GM Part No. 12345347 or
equivalent DOT
-3 Brake Fluid).
Parking Brake
Cable GuidesChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.
Power
Steering SystemDEXRON-III Automatic
Transmission Fluid.
Page 357 of 374

7-52
USAGEFLUID/LUBRICANT
Manual
Transmission (All)
and Transfer Case
(Four
-Wheel-Drive)
GM Goodwrench Synthetic
Manual Transmission Fluid
(GM Part No. 12346190
-
1 quart) or equivalent SAE
75W
-85 GL-4 Gear Oil.
Automatic
TransmissionDEXRON-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant,
Superlube (GM Part
No. 12346241 or equivalent).
Manual
Transmission
Shift LinkageChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.
USAGEFLUID/LUBRICANT
Clutch Linkage
Pivot PointsChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.
Floor Shift LinkageLubriplate Lubricant Aerosol
(GM Part No. 12346293 or
equivalent) or lubricant meeting
requirements of NLGI # 2
Category LB or GC
-LB.
Chassis LubricationChassis Lubricant (GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of NLGI # 2, Category LB
or GC
-LB.