Maintenance
Schedule
Section
A:
Scheduled Maintenance Services
(Cont.)
Dplanatiun
of
Scheduled Maintenance Services
Below are explanations of the services listed in Schedules
I
and
11.
290
ITEM
NO.
1
2
SERVICE
Engine Oil and Filter Change*
-
Always use
SG
Energy Conserving
I1
Oils of 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 (e.g., SAE
5W-30
or
1OW-30)
see “Engine Oil’’ in the Index.
Engine Idle Speed Check*
-
Check the idle speed
and adjust it to underhood label specifications.
*An
Emission Control
Service.
The proper fluids and lubricants to use are listed
in
Section
D.
Make sure whoever services your vehicle uses these. All
parts should be replaced and all necessary repairs done
before
you
or anyone else drives the vehicle.
ITEM
NO.
SERVICE
3
Cooling System Service*
-
Drain, flush and refill
the system with new or approved recycled coolant
conforming to
GM
Specification
4038M.
Keep
coolant at
the
proper mixture as specified. See
“Coolant”
in
the Index. This provides proper freeze
protection, corrosion inhibitor level, and 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
pressure cap.
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