1993 BUICK RIVIERA service interval

The services shown in this schedule up to 48 000 miles (80.000 km) should be performed after 48 000 miles at the same
I
* An Emission Control Service.
The
U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the emission war\
ranty or limit recall liability prior to the completion of
Record". vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in "Section E:Maintenance
275

TO BE SERVICED
(See Explanation of
Scheduled Maintenance
Services Following Schedules
I and 11)
Item No.
8. Spark Plug Replacement*
9. Spark Plug Wire Inspection*T
10. Air Cleaner Filter Replacement*
11. Fuel Tank, Cap
& Lines Inspection*?
WHEN TO PERFORM I MILES (000)
Miles (kilometers) or Months, Whichever
Occurs First I ,,
7.5 45 37.5 30 22.5 15
KILOMETERS (000)
0
0
Every 30 000 mi. (50 000 km) 0
0
I
The services shown in this schedule up to 45 000 miles (75 000 km) should be performed after 45 000 miles at the same
intervals.
I
* An Emission Control Service.
T The U.S. Environmental Protection Agency 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
vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in “Section E:Maintenance
Record“.
277

Explanation of Scheduled Maintenance 3. Throttle Body Mounting Bolt Torque" -- Check
Services the torque of the mounting bolts and/or nuts.
* An Emission Control Service.
The
U.S. Environmental ProtectionAgency has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to thecompletion of vehicle
useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in "Section EMaintenance Record".
278

conditioning condenser. Wash the pressure cap and
neck.
To help ensure proper operation, we recommend a
pressure test of both the, cooling system and the
pressure cap.
7. Transaxle Service -- 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:
In heavy city traffic where the outside
temperature regularly reaches
90 F (32 C) or
higher.
In hilly or mountainous terrain.
Uses such as found in taxi, police car or delivery
If you do not use your vehicle under any of these
conditions, change both the fluid and filter every
100,000 miles (160 000 km).
8. Spark Plug Replacement* -- Replace spark plugs
with the proper type. See “Specifications Chart” in
the Index.
service.
9. Spark
Plug Wire Inspection*? -- Inspect for burns,
cracks or other damage. Check the boot fit at the
distributor and at the spark plugs. Replace wires as
needed.
10. Air Cleaner Filter Replacement* -- Replace every
30,000 miles
(50 000 km) or more often under dusty
conditions.
Ask your dealer for the proper
replacement intervals for your driving conditions.
11. Fuel Tank, Caa, and Lines Insa,ection*T -- Inspect
fuel tank, cap and lines (including fuel rails and
injection assembly, if equipped) for damage or leaks.
Inspect fuel cap gasket for an even filler neck
imprint or any damage. Replace parts as needed.
Periodic replacement of the fuel filter is not required.
i
* An Emission Control Service.
3‘ The U.S. Environmental Protection Agency has determined that the failure \
to perform this maintenance item will not nullify the emission warranty or limitrecall liability prior to the completion of vehicle
useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in “Section EMaintenance Record“.
1 279
1:

.Section B: Owner Checks and
Services At Each Fuel Fill
(It is important for you or a service station attendant
to perform these underhood checks at each fuel
fill.)
Listed below are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown in
Section
D.
CHECK OR
SERVICE
Engine Oil
Level
Engine Coolant
Level
Windshield
Washer Fluid
Level
WHAT TO DO
Check the engine oil level and add
the proper oil if necessary. See “Engine Oil” in the Index for further
details.
Check the engine coolant level in the
coolant recovery tank and add the
proper coolant mix if necessary. See “Coolant” in the Index for further
details.
Check the windshield washer fluid
level in the windshield washer tank
and add the proper fluid if necessary.
See “Windshield Washer Nuid”
in
the Index for further details. ~-~ ~- ~
280 .~