1993 BUICK RIVIERA Owners Manual

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 .~

At Least Once a Month
CHECK OR
Tire Inflation
WHAT TO DO
~~ ~~ ~~ ~
Check tire inflation. Make sure they
are inflated to the pressures specified
on the Tire-Loading Information
label located on the rear edge of the
driver’s door. See “Tires” in the
Index for further details.
At Least Once a Year
CHECK OR
SERVICE I WHAT TO DO
Key Lock
the lubricant specified
in Section D. Cylinders Lubricate the key lock cylinders with
Lubricate all body door hinges. Also
Body
Lubrication lubricate ‘all hinges and latches,
including those for the hood, glove
box door and console door. Section
D tells you what to use.
CHECK OR SERVICE
Starter Switch
WHAT TO DO
or others could be injured.
Follow the stem below.
I
1. Before you start, be sure you have
enough room around the vehicle.
2. Firmly apply both the parking brake (see “Parking Brake” in the Index if
necessary) and the regular brake.
NOTE: Do not use the accelerator
pedal, and be ready to
turn off the
engine immediately if it starts.
3. Try to start the engine in each gear.
The starter should work only
in “P”
(Park) or “N” (Neutral). If the starter
works in any other position, your
vehicle needs service.
281

1‘
I

CHECK OR SERVICE
Parking Brake
and Automatic
Transmission
“P” (Park)
Mechanism Check
WHAT TO DO
ZAUTION: When you are doing
this check, your vehicle
could
gin to move. You or others
uld be injured and property
be damaged. Make sure
is room in front of your
hicle
in case it begins to roll.
ready to apply the regular
ake at once should the
ehicle begin to move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot
on the regular brake, set the
parking brake.
li To check the parking brake: With
the engine running and
transmission in
“N’ (Neutral),
slowly remove foot pressure from
the regular brake pedal.
Do this
until the vehicle is held by the
parking brake only.
mechanism’s holding ability: Shift
to
“P” (Park). Then release all
brakes.
To check the “P” (Park)
CHECK OR
SERVICE
Underbody
Flushing
WHAT TO DO
At least every spring, use plain water
to flush any corrosive materials
from
the underbody. Take care to clean
thoroughly any areas where mud and
other debris can collect.
283

INSPECTION
OR 'SERVICE
Throttle Linkage
Inspection

INSPECTION OR SERVICE
Brake System
Inspection
WHAT SHOULD BE DONE
Inspect the complete system. Inspect
brake lines and hoses for proper
hookup, 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. Check parking brake
adjustment. You may need to have
your brakes inspected more often if
your driving habits or conditions
result in frequent braking.
NOTE: A low brake fluid level can
indicate worn disc brake pads which
may need to be serviced. Also, if the
brake system warning light stays on
or comes on, something may be
wrong with the brake system. See
“Brake System Warning Light” in
the Index. If your anti-lock brake
system warning light stays on or
comes
-on, something may be wrong
with the anti-lock brake system. See “Anti-Lock Brake System Warning
Light” in the Index.
Section D: Recommended Fluids and
Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from your
GM dealer.
USAGE
Engine Oil
Engine Coolant
FLUID/LUBRICANT
GM Goodwrench Motor Oil or
equivalent for API service SG
Energy Conserving
I1 oils of the
proper viscosity. The
“SG’
designation may be shown alone or
in combination with others, such as
“SG/CC,” “SG/CD,” or
“SF,SG,CC,” etc. To determine the
preferred viscosity for your vehicle’s
engine, see “Engine Oil” in the
Index.
50/50 mixture of water (preferably
distilled) and good quality ethylene
glycol base antifreeze
(GM Part No.
1052753 or equivalent) conforming
to GM Specification 1825M
or
approved recycled coolant
conforming to GM Specification
1825M.
285

I
USAGE I FLUID/LUBRICANT
Hydraulic Brake Delco Supreme ll@ Brake Fluid
System (GM Part No. 1052535) or
Parking Brake Chassis lubricant meeting Guides requirements
of NLGI Grade 2,
Category LB or GC-LB (GM Part
No. 1052497 or equivalent).
Power Steering GM Hydraulic Power Steering Fluid System
- (GM Part No. 1052884) or
equivalent
DOT-3 brake fluid.
equivalent.
Automatic
Transaxle
1
Key Lock
Cylinders
DEXFtON@ IIE Automatic
Transmission Fluid (GM Part No. 1234588 1) or equivalent.
Lubricate with Multi-Purpose
Lubricant (GM Part
No. 12345 120),
synthetic
SAE 5W-30 engine oil or
silicone lubricant (GM Part
No.
1052276 or 1052277).
Automatic Engine oil.
Transaxle Shift Linkage ~ ~~~
Chassis
Lubrication Chassis lubricant . meeting
requirements
of NLGI Grade 2,
Category LB
or GC-LB (GM Part
No. 1052497 or equivalent).
USAGE
Windshield
Washer Solvent
Hood Latch Assembly
a. Pivots and Spring
Anchor
b. Release Pawl
Hood and Door
Hinges, Fuel Door Hinge
Weatherstrips
FLUIDLUBRICANT
GM Optikleen@ Washer Solvent
(GM Part No. 1051515) or
equivalent.
a. Engine oil.
b. Chassis lubricant meeting
requirements
of NLGI Grade 2,
Category LB or GC-LB (GM Part
No. 1052497 or equivalent).
Engine oil or Lubriplate Lubricant (GM Part No. 1050109).
Dielectric Silicone Grease (GM Part
No. 12345579 or equivalent).
See “Specifications Chart” in the Index for
recommended replacement filters, valves and
spark
plugs.
286