1999 BUICK RIVIERA cooling

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6-60
Fuse Usage
18 Not Used
19 Radio
20 Cooling Fan
21 Not Used
22 Not Used
23 Windshield Wipers
24 Flat Pack Motor
25 PCM
26 Cigarette Lighter
27 Crank
28 HVAC BlowerEngine Compartment Fuse Block

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6-61
Fuse Usage
1 Air Conditioning Compressor
2 Not Used
3 Not Used
4 Horn
5 Not Used
6 Not Used
7 Cooling Fan #2
8 Cooling Fan #3
9 Cooling Fan
10 ABS Main
11 ABS Pump Motor
12 Not Used
13 Horn
14 Not UsedRemoving the Rear Seat Cushion
To access the battery and main fuse boxes, the rear seat
cushion must be removed. You may wish to have your
dealer do this for you.
NOTICE:
The battery and main fuse boxes are located under
the rear seat cushion. The battery's ground
terminal and some relay wires are exposed. To help
avoid damage to the battery and wires, be careful
when removing or reinstalling the seat cushion. Do
not remove covers from covered parts. Do not store
anything under the seat, as objects could touch
exposed wires and cause a short.

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6-66
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.

Scheduled Maintenance
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7-5
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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7-6
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.

Short Trip/City Scheduled Maintenance
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7-21
± In hilly or mountainous terrain.
± When doing frequent trailer towing.
± Uses such as found in taxi, police or delivery service.

If you haven't used your vehicle under severe service conditions listed
previously and, therefore, haven't changed your automatic transaxle fluid,
change both the fluid and filter.
150,000 Miles (240 000 km)

Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test cooling system and pressure cap.
An Emission Control Service. ACTUAL
SERVICED BY:MILEAGE
DATE

Long Trip/Highway Scheduled Maintenance
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100,000 Miles (166 000 km)

Inspect spark plug wires.
An Emission Control Service.

Replace spark plugs.
An Emission Control Service.

Change automatic transaxle 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 haven't used your vehicle under severe service conditions listed
previously and, therefore, haven't changed your automatic transaxle fluid,
change both the fluid and filter.
150,000 Miles (240 000 km)
Drain, flush and refill cooling system (or every 60 months since last service,
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.
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE

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Part C: Periodic
Maintenance Inspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall). You should let your dealer's service
department or other qualified service center do these jobs.
Make sure any necessary repairs are completed at once.
Proper procedures to perform these services may be
found in a service manual. See ªService and Owner
Publicationsº in the Index.
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook
-up, binding, leaks,
cracks, chafing, etc. Clean and then inspect the drive
axle boot seals for damage, tears or leakage. Replace
seals if necessary.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body near
the exhaust system. Look for broken, damaged, missing or
out
-of-position parts as well as open seams, holes, looseconnections or other conditions which could cause a heat
build
-up in the floor pan or could let exhaust fumes into
the vehicle. See ªEngine Exhaustº in the Index.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they are
cracked, swollen or deteriorated. Inspect all pipes, fittings
and clamps; replace as needed. Clean the outside of the
radiator and air conditioning condenser. To help ensure
proper operation, a pressure test of the cooling system and
pressure cap is recommended at least once a year.
Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator and
cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook
-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.