Page 143 of 258
Problems on the Road
If the coolant inside the coolant recovery
tank
is boiling, don’t do anything else
until it cools down.
The coolant level should be at or above
“FULL.” If it isn’t, you may have a leak
in the radiator hoses, heater hoses,
radiator, water pump or somewhere else
in the cooling system. I NOTICE:
I
Engine damage from running your
engine without coolant isn’t covered
by your warranty.
[f there seems to be no leak, check to see
if the electric engine fan is running.
If the
mgine is overheating, the fan should be
running. If it isn’t, your vehicle needs
service.
How to Add Coolant to the Coolant
Recovery
Tank
[f you haven’t found a problem yet, but
:he coolant level isn’t at or above the
“FULL” mark, add a 50/50 mixture of
:lean water (preferably distilled) and a
xoper antifreeze at
the coolant recovery
:a&. (See “Engine Coolant” in the Index
for more information about the proper
:oolant mix.)
. . .I42
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Page 207 of 258

Maintenance Schedule
Section A: Scheduled Maintenance Services (Cont.)
Schedule l
Follow Schedule I if your vehicle is
MAINLY driven under one or more of
the following conditions:
e
a
a
a
When most trips are less than 4 miles
(6 km).
When most trips are less than
10 miles
(16 km) and outside temperatures
remain below freezing.
When most trips include extended
idling and/or frequent low-speed
operation, as in stop-and-go traffic.
When towing
a trailer.
When operating in dusty areas or
off-road frequently.
Schedule
I should also be followed if the
taxi or other commercial applications.
* An Emission Control Service.
t The U.S. Environmental Protection Agency
or the California Air Resources Board 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 lfc. General
Morors, howeve); urges that all recommended
maintenance services be performed at the
indicated intervals and the maintenance
be
recorded in “Section E: Maintenance Record.”
9%
. . .206
ITEM NO.
-
1
2
3
-
4
5
6
7
-
-
-
8
-
9
10
11
-
-
7
12
13
WHAT TO SERVICE
See “E,xplanation of Scheduled
Maintenance Services” following
Schedules
I und 11.
Engine OTI and Filter Change*
Tire and Wheel Rotation and Inspection
Fan (Water Pump) Drive Belt Service
Camshaft Timing Belt Replacement*
Cooling System Service”
Wheel Bearine Insuection
Transmission
(All) and Transfer Case
Differential (Four-wheel Drive) Service
Propeller Shafts and
U-Joints Inspection
Freewheeling Hubs Inspection
(if equipped)
Spark Plug Replacement*
Spark Plug Wire Replacement”
Positive Crankcase Ventilation (PCV) Valve
Reulacement*
Exhaust Gas Recirculation
(EGR) System
Inspection*
WHEN TO PERFORM
Miles (kilomerers) or Months
(whichever occursfirst).
Every 3,000 miles (5 000 km) or 3 months.
Every
6,000 miles (10 000 km).
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
At 60,000 miles (100 000 km).
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
Every 30,000 miles (50 000 krn) or 30 months.
Every 15,000 miles
(25 000 km) or 15 rnonlhs.
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
See “Explanation of Scheduled Maintenance
Services” following Schedules
I and 11.
Every 3,000 miles (5 000 km) or 3 months.
Every 30,000 miles (50
000 km).
Every
60,000 miles (100 000 km) or 60 months.
Every 50.000 miles
(X3 000 km).
Every 50,000 miles (83 000 km).
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Page 215 of 258

Maintenance Schedule
Section A: Scheduled Maintenance Services (Cont.)
&planation of Scheduled
Maintenance Services
?allowing are explanations of the services
isted in Schedule
I and Schedule II.
he proper fluids and lubricants to use are
.isted
in Section D. Make sure whoever
rervices your vehicle uses these. All parts
should be replaced and all necessary
repairs done before you or anyone else
~ives the vehicle.
NOTE: To determine your engine’s
displacement and code, see
“Engine Identification” in the
Index.
ITEM
NO. SERVICE
1 -e Oil and Filter Change* -
Always use SH or SG Energy
Conserving
II oils of proper
viscosity. The
“SH” or “SG”
designation may be shown
alone, or in combination with
others, such as “SHKD,”
“SH,
SG, CD,” “SG/CD,” etc.
* An Emission Control Service.
ITEM
NO. SERVICE
2
3
4
To determine the preferred
viscosity for your vehicle’s
engine (e.g.,
SAE 5W-30 or SAE
10W-30), see “Engine Oil” in
the Index.
Tire Wheel Rotation and
Jnspectioq
- For proper wear and
maximum tire life, rotate your
tires following the instructions
in this manual. See
“Ties,
Inspection and Rotation’’ in the
Index. Check the tires for
uneven wear or damage.
If you
see irregular or premature wear,
check the wheel alignment.
Check for damaged wheels also.
Fan (Water Pump) Drive Belt
Servk
- Inspect and adjust if
necessary at
30,000 mile
(50 000 km), or 30 month
intervals. Replace the belt at
60,000 miles (100 000 km) and
120,000 miles (200 000 km).
-shaft Timin? Belt
Replacemeat”
- Replace every
60,000 miles (100 000 km) and
ITEM NO.
SERVICE
then inspect after 30,000 miles
(50 000 km).
Drain, flush and refill the system
with new or approved recycled
coolant conforming to
GM
Specification 182SM. Keep
coolant at the proper mixture
as
specified. See “Coolant” in the
Index. This provides proper
freeze and boil protection,
corrosion inhibitor level and
maintains proper engine
operating temperature.
Inspect hoses and replace
if
they are cracked, swollen or
deteriorated. Tighten screw-type
hose clamps. Clean the outside
of the radiator and air
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
nressure cap.
5 Coolin? Sys&nSemice* -
. . ,214
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