1998 OLDSMOBILE BRAVADA towing

Refer to the Maintenance Schedule to determine when to
replace the air filter.
See “Scheduled Maintenance Services”
in the Index.
Operating the engine with the air cleaner off can
cause you or others to be burned. The air cleaner
not only cleans the air, it stops flame
if the engine
backfires.
If it isn’t there, and the engine
backfires,
you could be burned. Don’t drive with
it off, and be careful working on the engine with
the air cleaner off.
I NOTICE:
If the air cleaner is off, a backfire can cause a
damaging engine fire. And, dirt can easily get
into your engine, which will damage
it. Always
have the air cleaner in place when you’re driving.
Automatic Transmission Fluid
When to Check and Change
A good time to check your automatic transmission fluid
level
is when the engine oil is changed.
Change both the fluid and filter every
15,000 miles
(25
000 km) if the vehicle is mainly driven under one or
more
of these conditions:
0 In heavy city traffic where the outside temperature
regularly reaches
90°F (32°C) or higher.
In hilly or mountainous terrain.
0 When doing frequent trailer towing.
0 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
50,000 miles (83 000 km).
See ”Scheduled Maintenance Services” in the Index.
6-16
ProCarManuals.com

Maintenance Schedule
I Short TripKity Intervals I
Every 150,000 nliles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
1 Long Tripmighway Definition
Follow this maintenance schedule orll\. if none of the
conditions from the Short Trip/City Maintenance
Schedule is true.
Do not use this scl1edule 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.
Long Tripmighway Intervals
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
I2 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): Automatic
Transmission Service (severe conditions only).
Every 30,000 Miles (50 000 km): Fuel Filter
Replacement.
Air Cleaner Filter Replacement.
Every 50,000 Miles (83 000 km): Automatic
Transmission Service (normal conditions).
Every 60,000 Miles (100 000 km): Engine
Accessory Drive Belt Inspection. Fuel Tank, Cap
and Lines Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
Tlrosc) iuter.\uls o,rl\* .\'lttlllllcrri:o l1lui/1~cn~rnco wr\.ic-e.s.
Br strw to,fi)llon* tho cw11plett-' nlcrintencrm-e schdule on
tl1e~fi~llol-t:iug pcrgc~s.
7-6
ProCarManuals.com

Short Trip/City Maintenance Schedule
The services shown in this schedule up to 100,000 miles
(166 000 km) should be performed after 100,000 miles
(1 66 000 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, 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.
4:‘i: Drive axle service (see “Recommended Fluids and
Lubricants”
in the Index for proper lubricant to use):
Drain and refill at first oil change. At subsequent oil
changes, check fluid level and add fluid as needed.
If
driving in dusty areas or towing a trailer, drain fluid
and refill every 15,000 miles
(25 000 km).
More frequent lubrication may be required for
off-paved-road use.
7-7
ProCarManuals.com

I Short Trip/City Maintenance Schedule 1
I.5,OOO Miles (25 000 km) (Continued)
0 Inspect air cleaner filter if you are driving in dusty conditions. Replace filter if
necessary. An Emissiolz Control Service. (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.
- Uses such as found in taxi, police or delivery service.
If !?ou cIo rzof LW ~OUP' vehicle under uny of these conditior1s, chrzge tize,flrrid
crnclfilter. ever~? 50,000 miles (83 000 knl).
(32°C) or higher.
18,000 Miles (30 000 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
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 'K'k.)
rotation pattern and additional information. (See footnote +.)
DATE
SERVICED
BY
7-10
ProCarManuals.com

I Short TripKity Maintenance Schedule I
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
-If you do not use your vehicle ~rl~cler crny of these mnditiom, c1m.rge the fllricl
crnd,filter e\leq’ 50,000 miles (83 000 k1-u):
rotation pattern and additional information. (See footnote +.)
Cl Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
33,000 Miles (55 000 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 *#:.)
36,000 Miles (60 000 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).
An Emission Cmtrol Sc)?-l?ice.
(See footnote #.)
(Continued)
DATE
MILEAGE
7-13
ProCarManuals.com

I Short TripKity Maintenance Schedule I
45,000 Miles (75 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components (or every 3 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.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
(32°C) or higher.
If you clo not use yo~lr velzicle under cmy oftlzese cotzditions, chunge the jluid
und,filter every
50,000 miles (83 000 km).
filter if necessary.
An Emission Control Service. (See footnoteJf.)
0 Inspect air cleaner filter if you are driving in dusty conditions. Replace
DATE
R;IILEAGE
ACTUA*’ SERVICED BY
7-15
ProCarManuals.com

I Short TripKity Maintenance Schedule
60,000 Miles (100 000 kin) (Colztinued)
0 Check rear/front 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.
- Uses such as found in taxi, police or delivery service.
Ifyocr do not use your vehicle under any of tl.rese conditions, clzange the.fluid
anclfilter every 50,000 miles (83 000 knz).
(32°C) or higher.
0 Inspect engine accessory drive belt.
0 Replace fuel filter.
0 Replace air cleaner filter.
An Emission Control Service. (See footnote?.)
An Emission Contrrul Service.
0 Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts
as needed.
An Ernission Control Service. (See footnote?.)
rotation pattern
and additional information. (See footnote +.)
0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
ProCarManuals.com

I Short TripKity Maintenance Schedule I
- 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).
filter if necessary.
An Emission Control Service. (See footnote?.)
velocity joints and axle seals for leaking. (See footnote
**.)
0 Inspect air cleaner filter if you are driving in dusty conditions. Replace
0 Check readfront axle fluid level and add fluid as needed. Check constant
78,000 MiZes (130 000 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
+.)
DATE I
MILEAGE
- 7-21
ProCarManuals.com