BUICK RIVIERA 1999 Owner's Manual

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6-59
Instrument Panel Fuse BlockFuse Usage
1 Air Bag
2 Injectors
3 Anti
-Lock Brake System
4 Left Exterior Lamps
5 Turn Signal Lamps
6 Oxygen Sensor
7 Climate Control
8 Right Exterior Lamps
9 HVAC Relay
10 MAF
11 Auxiliary Power
12 Interior Lamps
13 Chime
14 TMNSS
15 Cruise Control
16 Perimeter Lights
17 Not Used

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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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6-62
To Remove the Rear Seat Cushion
1. Pull up on the front of the cushion to release the
front hooks.
2. Pull the cushion up and out toward the front of
the vehicle.
To Reinstall the Rear Seat Cushion
CAUTION:
A safety belt that isn't properly routed through
the seat cushion or is twisted won't provide the
protection needed in a crash. If the safety belt
hasn't been routed through the seat cushion at
all, it won't be there to work for the next
passenger. The person sitting in that position
could be badly injured. After reinstalling the seat
cushion, always check to be sure that the safety
belts are properly routed and are not twisted.
1. Buckle the center passenger position safety belt, then
route the safety belts through the proper slots in the
seat cushion. Don't let the safety belts get twisted.
2. Slide the rear of the cushion up and under the
seatback so the rear locating guides hook into the
wire loops on the back frame.
3. With the seat cushion lowered, push rearward and
then press down on the seat cushion until the spring
locks on both ends engage.
4. Check to make sure the safety belts are properly routed
and that no portion of any safety belt is trapped under
the seat. Also make sure the seat cushion is secured.

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6-63
Rear Compartment Driver's Side Fuse BlockFuse Usage
1 Open
2 Electronic Level Control
3 Trunk Release Relay
4 Open
5 Fuel Pump Relay
6 Driver Door Unlock Relay
7
-10 Open
11 Rear Defogger Relay
(Upper Zone)
12 Rear Defogger Relay
(Lower Zone)
13 Open
14 Spare
15 Spare
16 Spare
17
-22 Open
23 Direct Accessory
Power
- Accessory
24 Open

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6-64
Rear Compartment Passenger's Side Fuse BlockFuse Usage
1
-2 Spare
3 Open
4 Breaker
- Power
Windows/Sunroof
5
-6 Spare
7 Open
8
-9 Spare
10 Open
11 Breaker
- Power Seats
12
-13 Spare
14 Open
15 Power Seat
16 Breaker
-Headlamps
17 HVAC Blower Motor
18 Powertrain Control
Module/PASS
-Key
II
19 Ignition 3
20 Ignition 1

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6-65
Fuse Usage
21 Rear Defogger
22 Trunk and Fuel Door Releases
23 Electronic Level Control
24 Heated Seats/Instrument Panel
25 Exterior Lamps
26 Open
27 Power Door Locks
28 Interior Lamps
29 Hazard Lamps/Stoplamps
30 Parking Lamps
31 Heated MirrorFuse Usage
32 Open
33 Fuel Door Release
34 Trunk Release
35 Battery Thermistor
36 Instrument Panel #2
37 Instrument Panel #1
38 Heated Seats
39 Fuel Pump
40 Open
41 RR Defog 2
42 RR Defog 1

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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.

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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). . . . . . . . . . . . . . .

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6-68 Supercharged Engine Accessory Belt (L67)
The Supercharged 3800 V6 engine uses two accessory
drive belts. One belt drives the generator, power steering
pump, coolant pump and air conditioning compressor.
The second belt drives the supercharger. Each belt has
its own tensioner and idler pulley.
1. Front Belt
2. Back Belt
A. Generator
B. Power Steering
C. Crank
D. Supercharger
E. Coolant Pump
F. Air Conditioning