1993 BUICK ROADMASTER trailer

1. Turn off yom air conditioner.
If :No .Steam Is Coming From Your Engine:
If you get the overheat warning but see or hear no
steam, the problem may not be
too serious. Sometimes
the engine can get a little
too hot when you:
Climb a long hill on a.hot day.
Stop :after high speed driving.
Idle for long periods in traffic.
Tow a trailer.
If you get the overheat warning with no sign of steam,
try this
for a minute or so:
If there's still no. sign of steam, push the accelerator until
the .engine speed is about twice
as fast as normal idle-
speed. Bring the engine speed back
to normal idle speed
after two or three minutes.
Now see if the warning stops.
But then,
if you still have the-warning, TURN OF'F THE
ENGINE AND GET EVERYONE OUT OF THE
VEHICLE until it cools down.
You may decide not to 1ift.the hood but to get service
help right away.
217

It’s below freezing outside and most trips are less:
than
10 miles (16 km).
. The engine is -at low .speed most of the time (as in
door
tp door delivery, or in stop-and-go traffic).
You tow a trailer often.
Most trips are through dusty places.
If -any one of these is true for your vehicle, then you
need-to change
your oil.and filter every 3,000 miles
(5 000 km) or, 3 months - whichever comes first.
If none of them is true, change the oil every 7,500 miles
(12 -500 km) or 12 months - whichever comes first.
Change the filter at the first oil change and
at every
other oil change after that.
Engine Block Heater: An engine block heater can be a
big help if-you have
to park outside in very cold
weather,
-20 * F (-29 C] or .colder. If your vehicle has
this option, see
“Engine Block Heater” in the Index.
What to Do with Used Oil:
Used engine oil contains things that have
caused skin cancer in laboratory animals.
Da
let used oil stay on your skin for very long
Clean your skin and nails with soap and water,
away clothing or rags containing used engine
0
lr a good hand cleaner. Wash or properly throw
I
..
Used oil can be a real threat to the environment. If you
change your
own oil, be sure to drain all free-flowing oil
Erom the filter before disposal. Don’t ever dispose of oil
by 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.
252

Automatic Transmission Fluid
When to Check and Change:
A good time to check your auiomatic transmission fluid
level is when the engine oil is changed. Refer to the
Maintenance Schedule to determine when to change
your fluid. See “Scheduled Maintenance Services” in
the Index.
How to Check:
Because this operation can be a little difficult, you may
choose to have this done at
a Buick,dealership Service
Department.
If
you do it yourself, be sure to follow all the
instructions here, or you could get a false reading on the
.
dipstick. Wait
at least
30 minutes before checking the
transmission fluid level
if you have been driving:
0 When outside temperatures are above. 90 F ‘(32 C);
0 At high speed for quite a while. I
In heavy traffic - &specially in hot weathEr.: . .
While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which is
180 F to 200 *F (82 C
To check transmission fluid hot: Get the vehicle ‘warmed
up
by driving about 15 miles (24 krn) when outside
temperatures are above
50 F (1 0 C). If it’s colder than
50 F ( 10 C), drive the vehicle in “D” (3rd Gear) until
the engine temperature gage moves and then remains
steady for ten minutes. Then follow the hot check
procedures.
To check transmission fluid cold: A cold check is made
after the vehicle has been sitting for
8 hours or more
with the engine
off and is used only as a reference. Let
the engine run at idle for
5 minutes if outside
temperatures are
50 F (10 C) or more. If ‘it’s colder
than
50 OF (10 * C), you may have to idle the engine
longer.
A hot check must €0110~ when fluid is added
during
a cold check.
..
to 93 C).
254

I
Section A: Scheduled Maintenance
Services
Using Your Maintenance Schedules
This section tells you the maintenance services you
should have done and when
you should schedule them.
Your Buick dealer knows your vehicle best and wants
you to be happy with it.
If you go to your dealer for your
service needs, you’ll
know that GM-trained and
supported service people will perform the work using
genuine GM parts.
These schedules are
for vehicles that:
carry passengers and cargo within recommefided
limits.
You will find these limits on your vehicle’s
Tire-Loading Information label. See “Loading Your
Vehicle” in the Index.
are driven on reasonable road surfaces within legal
driving limits.
a use the recommended unleaded fuel. See “Fuel” in
the Index.
Selecting the Right Schedule
First you’ll need to decide which of the two schedules is
right for your vehicle. Here’s how to decide which
schedule to follow:
Schedule I
Is any one of these true for your vehicle?
a Most trips are less than 4 miles (6 km).
Most trips are less than 10 miles (16 km) when
outside temperatures are below freezing.
The engine is at low speed most of the time (as in
door-to-door .deliveryy or in stop-and-go traffic).
0 You operate your vehicle in dusty areas.
You tow a trailer.
If any one (or more) of these is true.for your driving,
follow Schedule
I.
Schedule Il
Follow Schedule 11 only if none of the above conditions
is true.
301

Scheduled Maintenance Services Schedule I
Follow Schedule'I if your car is MAINLY driven under one or more of the following conditions:
0 When most trips are less than 4 miles (6 kilometers).
e -When most trips are' less than 10 miles (16 kilometers) and outside temperatures remain below freezing.
.e When mosttrips include extended idling and/oi- frequent low-speed operation as \
in stop-and-go traffic.
e Towing a trailer.*?
0 When operating in dusty areas.
Schedule I should also be followed if the car is used for delivery service, police, taxi\
or other commercial applications.
TO~BE SERVICED WHEN TO PERFORM (See Explanation of
Scheduled Maintenance Miles (kilometers) or
Services Following Months, Whichever
Schedules I and 11j Occurs First
I 1. Engine Oil & Oil Filter Every 3 000 mi. (5000 km)
Change* or 3 months.
I 2. Chassis Lubrication I Every other oil change
I
3. Throttle Body Mounting At 6 OQd)..mi,~10~000 km)
Bolt Torque*
I
At 6,000 mi. (10 000 km) and
km) or as necessary
4. Tire 8L Inspection ' then every 15 000 mi. (25 000 Rotation
5. Engine Accessory Drive
Belt(s) Inspection" Every
30 000 mi. (50 000 km) or 24 months.
MILES (000) I
LO 10 15
0
0
0
20 25
00
.
KILOMETER;
35 40 45
000
0
0
000)
50 55 60 65
000.
0 a
0
0
302

7.
8.
To help ensure-proper operation, we recommena a
pressure test of both’the cooling system and the
pressure cap. If you do not use your vehicle under any of these
conditions, change both the fluid and filter every
100,000 miles (1 60 000 km).
Front Wheel Bearing Repack - When your 9. Spark Plug Replacement* - Replace spark plugs
vehicle is used in such service as police work, as a with the proper type. See “Specifications Chart.’’ in
taxi or
in door-to-door delivery, clean and repackthe the Index.
front wheel bearings at each brake relining or
15,000 Spark plug Wire Inspection*? - Inspect for
miles (25 000 km), whichever comes first. If you
don’t use your vehicle in such service, clean
and
repack the bearings at each brake relining or 30,000 -
miles (50 000 km) whichever comes first. burns, cracks .or other damage. Check the boot fit
at
the distributor and at the spark plugs. Replace wires
as. needed.
Transmission 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 heayy city traffic where the outside
temperature regularly reaches
‘90 OF (32 C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police car or delivery
service.
11. Exhaust Gas Recirculation (EGR) System
Inspection*?
- Conduct the EGR system service
as described in the service manual.
To purchase a
service manual, see “Service Publications” in the
Index.
12. Air Cleaner Filter Replacement* - Replace every
30,000 miles (50 000 km) or more ofkn under dusty
conditions. Ask your dealer for the proper
replacement intervals for your driving conditions.
307
I

INSPECTION
OR SERVICE
Rear. Axle
Service
WHAT SHOULD BE DONE
Check the gear lubricant.leve1 in’ the
rear axle and add if needed. See
“Rear Axle” in the Index. A fluid
loss in
this system may indicate a
problem. Check the system and
repair it if needed. If your vehicle is
used- to pull a trailer, have the rear
,axle gear .lubricant changed every
7,500 mile$ (12 500 kin).
.. .
INSPECTION
OR SERVICE
Brake System
Irispection.
313
!

.Gasoline ....................................... 243
Gasoline Tank. Filling Your
........................ 245
Gate Ajar Light
................................. 124
Gear Positions
................................... 78
Glass Cleaning
.................................. 282
Graphic Symbols
................................. 12
Guard Against Theft
.............................. 72
Guide en Francais
................................. 2
Halogen
Bulbs ................................. 265
Hazard Warning Flasher ........................... 204
Haze. Driving in ................................. 180
Headlamp Bulb Replacement
....................... 265
Headlight High-Low Beam Switch
. : ................. 90
Head Restraints ................................... 18
Heater
..................................... 128.. '13 1
Highway Hypnosis ............................... 185
Hill and Mountain Roads
.......................... 186
Hills. Parking on
.............. : ................. 188
Hitches. Trailer
.................................. 198
Holding
a Baby in Your Car ......................... 46
Hood. Opening the
............................... 247
Horn
........................................... 88
Hot Coolant Warning Light
........................ 122
Hot Engine. Safety Warnings About
................. 216
Hydroplaning
................................... 179
Ice. Driving
on ................................. 192
Identification Label. Service Parts
................... 287
Identification Number. Vehicle
..................... 287
Hearing Impaired. Customer Assistance
for
........... 320
High Speed Shifting When Your Engine
is Running ...... 79 Idling
Your Engine
................................ 86
If You're Stack: In Sand. Mud. Ice or Snow ........... 239
Ignition Key Positions
............................. 74
Indicator. Turn Signal
.............................. 89
Indicators. Disc Brake Wear
....................... 168
Infant Restraint
.................................. -47
Inflation. Tire
................................... 272
Inside Mirror
.................................... 102
Inspection. Tire
................................. 273
Instrument Panel
................................ 113
Interior Cleaning
............ *- .................. -280
Interlock. Brake-Transmission
Shift ............... 78. 84
Introduction. How
to Use this Manual ................. 10
Jack. Tire ..................................... 224
Jacking Up the Car
............................... 232
Jump Starting
................................... 206
Keys
.......................................... 62
Keyless Entry System. Remote
...................... 69
Kilometer Indicator
.............................. 114
Label. Service Parts Identification
.................. 287'
Lane Change Indicator
............................. 89
Lap-Shoulder Belt Usage by Children
.................. 56
Leaving Your Vehicle ............................ 65. 84
Light Bulbs. Replaceable
........................... 294
Light. Safety Belt
.............................. 21. 27
Light. Turn Signal Indicator
......................... 89
Indicators. Warning Lights. Gages
& ................. 114
LapBelt
........................................ 41