1998 GMC ENVOY automatic transmission

75,000 Miles (125 000 km)
0 Change engine oil and filter (or every 12 months, whichever occurs first).
0 Lubricate chassis components (or every 12 months, whichever occurs first),
AH Emissior.1 Control Service.
(See footnote
#.)
0 Check readfront axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking. (See footnote
:!:*.)
0 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 90°F
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
(32 "C) or higher.
- Uses such as found in taxi, police or delivery service.
rfvo1.1 do rzot r.1,~ your vehicle 1.1rzder- my of these colditims, change tlleJlld
andfi.ltel-
every 50,000 miles (83 000 km).
0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote
+.)
I I
DATE I
1 MILEAGE ACTUAL I SERVICEDBY I
7-35
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I Long Trip/Highway Maintenance Schedule I
82,500 Miles (137 500 km)
0
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 readfront axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking. (See footnote
**.)
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote
#.)
0 Check readfront axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking. (See footnote
**.)
0 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 90°F
- In hilly or mountainous terrain.
(32” C) or higher.
DATE I
MILEAGE
I DATE I
+
MILEAGE ACTUAL SERVICED BY
7-36
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Long Tripmighway Maintenance Schedule
100,000 Miles (166 000 km)
0 Inspect spark plug wires.
0 Replace spark plugs.
0 If you haven't used your vehicle under severe service conditions listed
An Emission Control Service.
API Emission Control Service.
previously and, therefore, haven't changed your automatic transmission fluid,
change both the fluid and filter.
An Emission Control Service.
Inspect Positive Crankcase Ventilation (PCV) valve.
150,000 Miles (240 000 km)
0 Drain, flush and refill cooling system (or every 60 mon .ths since last service,
whichever occurs first)."'See "Engine Coolant"
in the Index for what to use.
DATE
DATE
MILEAGE
ACTUAL SERVICED BY
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test I I
the cooling system and pressure cap.
An Emission Corztrol Service.
7-38
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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 “Wiper Blades,
Cleaning”
in the Index.
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.
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 and fuel door hinges, rear
compartment hinges, latches and locks including
the
glove box, console doors and the body hood and any
moving seat hardware. Lubricate the hood safety lever
pivot and prop rod pivot. Part
D tells you what to use.
More frequent lubrication may be required when
exposed to
a corrosive environment.
7-40
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Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK
in each shift lever position.
The key should turn to LOCK only when the shift
lever is in PARK (P).
The key should come out only in LOCK.
Parking Brake and Automatic Transmission
PARK
(P) Mechanism Check
b-
When you are doing this check, your vehicle
could begin to move.
You or others could be
injured and property could be damaged. Make
sure there is room in front
of your vehicle in case
it begins to roll. Be ready to apply the regular
brake
at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot
on the regular brake, set the
parking brake.
0 To check the parking brake’s holding ability:
With the engine running and transmission in
NEUTRAL
(N), slowly remove foot pressure from
the regular brake pedal.
Do this until the vehicle is
held by the parking brake only.
0 To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK
(P). Then
release all brakes.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care
to
clean thoroughly any areas where mud and other debris
can collect.
7-42
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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
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
1 1 @ Brake Fluid
(GM Part No. 12377967 or
equivalent DOT-3 Brake Fluid).
USAGE
Parking Brake
Cable Guides
Power Steering System
Automatic
Transmission
Key Lock
Cylinders
Chassis
Lubrication
Differential,
Front and Rear
Axle
FLUIDLUBRICANT
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,
10500 17 - 1 quart, or equivalent).
DEXRON@-I11 Automatic
Transmission Fluid.
Multi-Pu
ose Lubricant,
Superlube
% (GM Part
No. 1234624 1 or equivalent).
Chassis Lubricant
(GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of
NLGI # 2, Category LB or
GC-LB.
Axle Lubricant (GM Part
No. 1052271) or SAE 8OW-90
GL-5 Gear Lubricant.
7-45
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USAGE
Transfer Case
Windshield
Washer Solvent
Rear Driveline
Center Spline
and Universal
Joints
Constant Velocity
Universal Joint
FLUIDLUBRICANT
DEXRON@-I11 Automatic
Transmission Fluid.
GM Optikleen@ Washer Solvent
(GM Part
No. 105lSlS) or
equivalent.
Chassis Lubricant
(GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of
NLGI # 2, Category LB or
GC-LB.
Chassis Lubricant
(GM Part
No. 12377985 or equivalent) or
lubricant meeting requirements
of
NLGI # 2, Category LB or
GC-LB.
USAGE
Hood Latch
Assembly,
Secondary Latch,
Pivots, Spring
Anchor and
Release Pawl
Hood and Door
Hinges
Weatherstrip Conditioning
Weatherstrip Squeaks
FLUIDLUBRICANT
Lubriplate@ Lubricant Aerosol
(GM Part
No. 12346293 or
equivalent) or lubricant meeting
requirements
of NLGI # 2,
Category LB or GC-LB.
Multi-Pu ose Lubricant,
Superlube
% (GM Part
No. 1234624 1 or equivalent).
Dielectric Silicone Grease (GM
Part
No. 12345579 or equivalent).
Multi-Pu ose Lubricant, Superlube
% (GM Part
No. 1234624 1 or equivalent).
7-46
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Section 9 Index
Accessory Inf’lator ............................. 2-50
Acces~~ty
POWC~ Outlets ......................... 2-52
Adcling Sound Equilm1cnt
........................ 3-23
Add-On Equiptnent
............................. 4-43
Air Bag
Adding Equipment ............................ 1-27
How Does it Restrain .......................... 1-25
How it Works ................................ I -23
Location
.................................... 1-23
Readiness Light
......................... 1-22 . 2-63
Servicing
................................... 1-27
What
Makes it Inflate .......................... 1-25
What
You See After it Inflates ................... 1-25
When Should
it Inflate ......................... 1-24
Air Cleaner .................................... 6- 14
Air Conditioning ................................ 3-5
Refripxants
................................. 6-62
Alignment
and Balancc. Tire ...................... 6-13
Atltenn.1.
Fi~d ................................. 3-26
Adcling
Equipment
to the Outside of’ Your Vehicle ...... 6-3
AllIt11inLll11 Wheels . Clea11i11~ ...................... 6-5 1
Anti-Lock Brake System Wa~ming Light ......... 2-66 . 4-7
Appearance
Care ............................... 6-45
Materials
.................................... 6-53
Arbit~-ation Program .............................. 8-9
Ar111rest . Storage ............................... 2-15 Ashtrays
...................................... 2-49
Audio Systems ............................. 3-8. 3-12
Automatic Headlamp System
...................... 2-37
Automatic Transmission Check
...................................... 7-40
Fluid ....................................... 6-15
Operation ................................... 2-18
Park Mechanism Check ........................ 7-42
Shiftin
...................................... 2-18
Starting Your Engine
.......................... 2-15
Front ....................................... 6-21
Rear
....................................... 6-19
Axle
Backglass Wiper. Blade Replacement
.............. 6-36
Battery
....................................... 6-30
Charge LiFht ................................ 2-63
Jump
Startmg ................................. 5-3
Replacement, Keyless
Entry ..................... 2-8
Warnings ................................ 5-3, 5-4
Battery Run-Down Protection ..................... 2-44
BBB Auto
Line ................................. 8-9
Better Business Bureau Mediation
................... 8-9
Blizzard ...................................... 4-38
Brake Fluid .................................... 6-27
9- 1
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