1999 BUICK RIVIERA air filter

6-
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Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
-2 Service
6
-3 Fuel
6
-5 Filling Your Tank
6
-8 Filling a Portable Fuel Container
6
-8 Checking Things Under the Hood
6
-11 Engine Oil
6
-15 Engine Air Cleaner/Filter
6
-17 Supercharger Oil
6
-18 Automatic Transaxle Fluid
6
-20 Radiator Pressure Cap
6
-21 Engine Coolant
6
-25 Windshield Washer Fluid
6
-26 Brakes
6
-29 Battery
6
-31 Bulb Replacement6
-39 Tires
6
-47 Appearance Care
6
-48 Cleaning the Inside of Your Vehicle
6
-51 Cleaning the Outside of Your Vehicle
6
-54 Underbody Maintenance
6
-54 Chemical Paint Spotting
6
-55 GM Vehicle Care/Appearance Materials
6
-56 Vehicle Identification Number (VIN)
6
-57 Electrical System
6
-61 Removing the Rear Seat Cushion
6
-66 Replacement Bulbs
6
-66 Capacities and Specifications
6
-67 Air Conditioning Refrigerants
6
-67 Normal Maintenance Replacement Parts

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6-15
If none of them is true, use the long trip/highway
maintenance schedule. Change the oil and filter every
7,500 miles (12 500 km) or 12 months
-- whichever
occurs first. Driving a vehicle with a fully warmed
engine under highway conditions causes engine oil to
break down slower.
What to Do with Used Oil
Did you know that used engine oil contains certain
elements that may be unhealthy for your skin and could
even cause cancer? Don't let used oil stay on your skin
for very long. Clean your skin and nails with soap and
water, or a good hand cleaner. Wash or properly throw
away clothing or rags containing used engine oil. (See
the manufacturer's warnings about the use and disposal
of oil products.)
Used oil can be a real threat to the environment. If you
change your own oil, be sure to drain all free
-flowing oil
from the filter before disposal. Don't ever dispose of oil
by putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead,
recycle it by taking it to a place that collects used oil. If
you have a problem properly disposing of your used oil,
ask your dealer, a service station or a local recycling
center for help.
Engine Air Cleaner/Filter
As you face the front of the vehicle, the engine air
cleaner is in the front right section of the engine
compartment. There is a filter inside the air cleaner.

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6-16
Remove the air cleaner assembly as follows:
1. Remove the air duct clamp and separate the hose
from the air cleaner cover. Rotate the hose on the
throttle body upward so it is out of the way.
2. Detach the electrical connector and remove the air
cleaner cover by flipping the two latches on the
bottom inboard side of the cover.
3. Tilt and pull the cover toward the engine to
disengage it from the assembly.
4. Remove the old filter and install the new one.
5. Reinstall the air cleaner cover by sliding the tabs into
the base of the air cleaner and locking the two
latches. Reinstall the electrical connector.
6. Rotate the inlet duct into position and slide it onto
the air cleaner outlet, then tighten the clamp.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See ªScheduled Maintenance Servicesº in the Index.
CAUTION:
Operating the engine with the air cleaner/filter
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/filter off.
NOTICE:
If the air cleaner/filter 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/filter in place when
you're driving.

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Bulb Replacement
The following procedure tells you how to replace your
headlamp bulbs. For the type of bulb, see ªReplacement
Bulbsº in the Index.
For any bulb changing procedure not listed in this
section, contact your dealer's service department.
Halogen Bulbs
CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps
A. Headlamp
B. Front Turn Signal
The entire front headlamp assembly must be removed to
replace the headlamps. If more hand clearance is
required, you may find it easier to remove the engine air
cleaner/filter assembly before replacing bulbs on the
driver's side.

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Replacement Bulbs
Exterior Bulb Number. . . . . . . . . . . . . . . . . . . . . . . .
Headlamp
High
-Beam 9005. . . . . . . . . . . . . . . . . . . . . . . . . . .
Low
-Beam 9006. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking/Turn 3057. . . . . . . . . . . . . . . . . . . . . . . . . . .
Back
-Up 3057. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tail 194. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tail/Turn 3057. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior
Rail Courtesy, Reading PC168. . . . . . . . . . . . . . . . . .
Front Overhead Reading PC168. . . . . . . . . . . . . . . . .
For service information on other bulbs, contact your
dealer's service department.
Capacities and Specifications
The following approximate capacities are given in
English and metric conversions. Please refer to
ªRecommended Fluids and Lubricantsº in the Index for
more information.Engine Code 1 (L67) 3.8L V6 SFI
Automatic Transaxle
Drain and Refill 7.4 quarts (7.0 L). . . . . . . . . . . . . .
After Complete Overhaul 10.0 quarts (9.5 L). . . . .
After performing either transaxle procedure, check
fluid level when done. More fluid may be needed.
Belt Tensions
Automatically controlled by a Self
-Tension idler
pulley. Tension adjustment should never be necessary.
Cooling System13.0 quarts (12.3 L) . . . . . . . . . . . . .
Engine Crankcase
Oil change with filter change 4.5 quarts (4.3 L). . . . .
Fuel Tank18.5 gallons (70.0 L) . . . . . . . . . . . . . . . . .
Wheel Nut Torque100 lb
-ft (140 N´m) . . . . . . . . . .
Tire Pressure
See Tire
-Loading Information label on the rear edge
of the driver's door.
R
-134a Air Conditioning
See refrigerant charge label under the hood.
All capacities are approximate. When adding, be sure
to fill to the appropriate level as recommended in
this manual.

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6-67 Engine Specifications
Engine L67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN Engine Code 1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Type V6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 3.8L. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horsepower 240. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-6-5-4-3-2 . . . . . . . . . . . . . . . . . . . . . .
Thermostat Temperature 195
F (91
C) . . . . . . . . . . .
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the
air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used. If
you're not sure, ask your dealer.
Normal Maintenance
Replacement Parts
Air Cleaner Filter AC Type A-1096C . . . . . . . . . . . . .
Engine Oil Filter AC Type PF
-47 . . . . . . . . . . . . . . . .
Fuel Filter AC Type GF
-627 . . . . . . . . . . . . . . . . . . . .
Radiator Cap RC27. . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark Plugs AC Type 41
-921* . . . . . . . . . . . . . . . . . .
Gap 0.060 inch (1.52 mm)
*Replaces original spark plug NGK Type PTR4B
-15.
Windshield Wiper Blades
Type 6.32 pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Length 22 inches (56 cm). . . . . . . . . . . . . . . . . . . . .
Vehicle Dimensions
Length 207.2 inches (526.3 cm). . . . . . . . . . . . . . . . .
Width 75.0 inches (190.5 cm). . . . . . . . . . . . . . . . . . .
Height 55.2 inches (140.0 cm). . . . . . . . . . . . . . . . . . .
Wheelbase 113.8 inches (289.1 cm). . . . . . . . . . . . . .
Front Tread 62.5 inches (158.8 cm). . . . . . . . . . . . . . .
Rear Tread 62.6 inches (159.0 cm). . . . . . . . . . . . . . .

Scheduled Maintenance
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Short Trip/City Definition
Follow the Short Trip/City Scheduled Maintenance if
any one of these conditions is true for your vehicle:

Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.

Most trips include extensive idling (such as frequent
driving in stop
-and-go traffic).

Most trips are through dusty areas.

You frequently tow a trailer or use a carrier on top of
your vehicle.

If the vehicle is used for delivery service, police, taxi
or other commercial application.
One of the reasons you should follow this schedule
if you operate your vehicle under any of these
conditions is that these conditions cause engine
oil to break down sooner.
Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change (or 3 months, whichever occurs first).
Every 6,000 Miles (10 000 km): Chassis Lubrication
(or 6 months, whichever occurs first). Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection, if driving in dusty conditions.
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Tank, Cap and Lines Inspection.
Supercharger Oil Check (or every 36 months,
whichever occurs first) (3800 Code 1 V6 engine only).
Every 50,000 Miles (83 000 km): Automatic Transaxle
Service (severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Automatic
Transaxle Service (normal conditions).
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 scheduled maintenance
on the following pages.

Scheduled Maintenance
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Long Trip/Highway Definition
Follow this scheduled maintenance only if none of the
conditions from the Short Trip/City Scheduled
Maintenance 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 a vehicle with a fully warmed engine under
highway conditions causes engine oil to break
down slower.
Long Trip/Highway Intervals
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). Tire Rotation.
Every 30,000 Miles (50 000 km): Supercharger Oil
Check (or every 36 months, whichever occurs first)
(3800 Code 1 V6 engine only). Air Cleaner Filter
Replacement. Fuel Tank, Cap and Lines Inspection.
Every 50,000 Miles (83 000 km): Automatic Transaxle
Service (severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement. Automatic
Transaxle Service (normal conditions).
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 scheduled maintenance
on the following pages.