1998 GMC ENVOY Owners Manual

I Short Trip/City Maintenance Schedule I
100,000 Miles (I66 000 km)
17 Inspect spark plug wires.
0 Replace spark plugs.
0 If you haven’t used your vehicle under severe service conditions listed
AFI Emission Control Service.
An Emission Control Service.
previously and, therefore, haven’t changed your autornatic transmission fluid,
change both the fluid and filter.
An Errzission Cmtd Service.
0 Inspect Positive Crankcase Ventilation (PCV) valve.
150,000 Miles (240 000 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
cooling system and pressure cap.
An Ernission Control Service.
DATE I
DATE I
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I Long Tripmighway Maintenance Schedule I
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
i- 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, ball joints, steering
linkage and transfer case shift linkage, parking brake
cable guides, propshaft splines, universal joints and
brake pedal springs.
+ 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: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.
fluid as needed at every engine
oil change.
Standard Differential -- Check fluid level and add
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1
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I Long Tripmighway Maintenance Schedule I
7,500 Miles (I2 500 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).
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
(See footnote
#.)
velocity
joints and axle seals for leaking. (See footnote **.)
rotation pattern and additional information. (See footnote +.)
15,000 Miles (25 000 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).
(See footnote
#.)
0 Check readfront axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking. (See footnote
**.)
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.
An
Emission Control
Service.
(32°C) or higher.
DATE I
MILEAGE
DATE
7-28
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I Long TripMighway Maintenance Schedule I
-
- When doing frequent trailer towing.
2 Uses such as found in taxi, police or delivery service.
lfyo~t do not use your vellicle under any qf these conditions, cnnnge the fluid
and
filter every 50,000 miles (83 000 km).
rotation pattern and additional information. (See footnote +.)
0 Rotate tires. See “Tire Inspection and Rotation’’ in the Index for proper
22,500 Miles (37 500 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).
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
An Emission Control Service.
(See footnote
#.)
velocity joints and axle seals for leaking. (See footnote **.)
rotation pattern and additional information. (See footnote +.)
DATE
30,000 Miles (50 000 km)
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service. MILEAGE
(Continued)
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1 Long Tripmighway Maintenance Schedule
30,000 Miles (50 000 km) (Continued)
0 Lubricate chassis components (or every I2 months, whichever occ~lrs 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
$’*.)
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
(32°C) 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 us(J ~OLII- vel?ic*le uder CIH~ c!f’the.se cmditiolzs, change tl?o md ji’lter every 50,000 wiles (83 000 km).
rotation pattern and additional information. (See footnote +.)
At? Emissiorz CmztroI Service. (See footnote?.)
An Emission Control Service.
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
0 Replace fuel filter.
0 Replace air cleaner filter.
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37,500 Miles (62 500 km)
Change engine oil and filter (or every 12 months, whichever occurs first).
0 Lubricate chassis components (or every I2 months, whichever occurs first).
Check rear/front axle fluid level and add fluid as needed. Check constant
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
An Emission Control Srrvice.
(See footnote #.)
velocity joints and axle seals for leaking. (See footnote
rotation pattern and additional information. (See footnote
+.)
45,000 Miles (75 000 km)
0 Change engine oil and filter (or every 12 months, whichever occurs first).
0 Lubricate chassis components (or every I2 months, whichever occurs first).
(See footnote
#. j
0 Check readfront axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking. (See footnote
?j
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
AI? Emission Coutrol Service.
(32°C) or higher.
I DATE I
SERVICED BY
DATE 1
MILEAGE I SERVICED BY I
(Continued)
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I
I Long Tripmighway Maintenance Schedule b
45,000 Miles (75 000 km) (Continued)
- 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
andfilter every
50,000 miles (83 000 km).
rotation pattern and additional information. (See footnote +.)
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
50,000 Miles (83 000 km)
0 If you haven’t used your vehicle under severe conditions listed previously and,
therefore, haven’t changed your automatic transmission fluid, change both the
fluid and filter.
52,500 Miles (87 500 km)
0 Change engine oil and filter (or every 12 months, whichever occurs first).
Lubricate chassis components (or every 12 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 **.)
DATE I
MILEAGE SERVICED BY:
I I
~
DATE I
I I I
7-32
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I Long Tripmighway Maintenance Schedule I
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
60,000 Miles (100 000 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).
0 Check readfront axle fluid level and add fluid as needed. Check constant
0 Change automatic transmission fluid and filter if the vehicle is mainly driven
An
Emission Control Service.
(See footnote
#.)
velocity joints and axle seals for leaking. (See footnote ‘K*.)
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.
- 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 50,000 miles (83 000 km).
(32°C) or higher.
(Continued)
DATE I
7-33
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