1993 PONTIAC GRAND-PRIX engine

IMPORTANT
KEEP ENGINE OIL
AT THE PROPER
LEVEL AND CHANGE
AS
RECOMMENDED
This part covers the maintenance
required for your Pontiac. Your
vehicle needs these services to retain its safety, dependability and emission
control performance.
Have you purchased the GM
Protection Plan?
The Plan supplements your new
vehicle warranties. See your Pontiac dealer for details.
Part 7 '.
Maintenance Schedule
Section
Introduction
A Word About Maintenance .......................................................... 288
Your Vehicle and the Environment
................................................ 288
How This Part is Organized
........................................................... 289
A. Scheduled Maintenance Services
Using Your Maintenance Schedules .............................................. 290
Selecting the Right Schedule
.......................................................... 290
Schedule
I ........................................................................\
............... 292
Schedule
I1 ....... .............................................................. .. ........... .... 294
Explanation
of Scheduled Maintenance Services ... ... . . . . . . . . . . . . . . . . . . . 296
B. Owner Checks & Services
At Each Fuel Fill ........................................................................\
..... 299
At Least Once a Month
.................................................................. 299
At Least Twice a Year
..................................................................... 299
At Least Once a Year
...................................................................... 300
C. Periodic Maintenance Inspections ....................................................... 302
D. Recommended Fluids & Lubricants .................................................... 303
E. Maintenance Record ........................................................................\
...... 306
ProCarManuals.com

Schedule I
Is any of these true for your vehicle?
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 delivery, or in stop-and-go traffic).
You operate your vehicle in dusty areas.
You tow a trailer. (With some models, you shouldn’t ever
If any one (or more) of these is true for your driving, follow
Schedule
I.
tow a trailer. See the Index under Towing a Trailer.)
Schedule I1
Follow Schedule I1 only if none of the above conditions is
true.
ProCarManuals.com

Maintenance Schedule
.
Section A: Scheduled Maintenance Services ~ont.3
Schedule I
Follow Schedule I if your vehicle is
MAINLY driven under one or more of
the following conditions:
When most trips are less than 4 miles
When most trips are less than 10 miles
(6 km).
(16 lun) 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.
Schedule I should also be followed if
the vehicle is used for delivery service,
police, taxi
or other commercial
applications.
An Emission Control Service.
~2 The US. 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.
292
TO BE SERVICED
See Euplnrzatior~ of Scheduled Maintennitce
Sercices following Schedules I and II.
ITEM
NO.
2 I Chassis Lubrication
3 Throttle Body Mounting Bolt Torque
(3.E Engine, VIN Code T)*
41
Tire and Wheel Rotation and Inspection
Camshaft Timing Belt Inspection (3.4L Engine,
VIN Code X)*
81
Transaxle Service
10 I Spark Plug Wire Inspection*+
Exhaust Gas Recirculation
(EGR) System
Inspection
(3.4L Code X engine only)**
14 Fuel Tank, Cap & Lines Inspection**
T
WHEN TO PERFORM
Miles (kilometers) or Months
(whichever occurs first).
Every other oil change.
At
6,000 Miles (10 000 km) and then every
15,000 Miles (25 000 !an) or as necessary.
At
60,000 Miles (100 000 km) and then every
l5,000 Miles (25 000 km).
See Explmution of Scheduled Muinterzance Services
following Schedules I and II.
Every 30,000 Miles (50 000 km).
Every 30:000 Miles (50 000 km).
Every 30,000 Miles (50 000 km).
ProCarManuals.com

Maintenance Schedule
Section A: Scheduled Maintenance Services t~ont.3
Schedule I1
Follow Schedule I1 ONLY if none of
the driving conditions specified in Schedule
I apply.
'' An Emission Control Service.
A 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.
294
TO BE SERVICED ITEM
No' See Explanation of Scheduled Maintenance
Senices
following Schedules I and II.
WHEN TO PERFORM
Miles (kilometers) or Months
(whichever occurs first).
1
Camshaft Timing Belt Inspection At 60,000 Miles (100 000 km) and then every
(3.4L Engine, VIN Code X)* l5,000 Miles (25 OOO km). I
14 Fuel Tank, Cap and Lines Inspection** Every 30,000 Miles (50 OOO km).
ProCarManuals.com

Maintenance Schedule
Section A: Scheduled Maintenance Services t~ont.3
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule 11.
ITEM
NO. SERVICE
1 Engine Oil and Filter Change’:-Always use SG
Energy Conserving I1 oils for 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 SAE 1OW-30) see the Index under
Engine OiZ. If your vehicle is equipped with an
Engine Oil-Change Indicator (EOCI)
, the
indicator will show you when to change oil. See
the
Index under Driver Information Center.
2 Chassis Lubrication-Lubricate the transaxle shift
linkage, parking brake cable guides, underbody
contact points and linkage. Lubricate the front and
rear suspension and steering linkage. 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 Throttle Body Mounting Bolt Torque (3.1L
Code T engine only)‘x- Check the torque of the
mounting bolts and/or nuts.
Tire and Wheel Rotation and Inspection -For
long wear and maximum tire life, rotate your tires
following the instructions in this manual. See the
Index under Tires, Inspection G. Rotation. Check
the tires for uneven wear or damage.
If you see
irregular or premature wear, check the wheel alignment. Check for damaged wheels also.
4
a 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.
296
ProCarManuals.com

ITEM
NO. SERVICE
ITEM NO. SERVICE
5
6
Engine
Accessory Drive Belt Inspection
(California
3.1L Code T, engine*)-Inspect the
belt for cracks, fraying, wear and proper tension.
Replace as needed,
Camshaft Timing Belt Inspection
(3.4L Code X
engine only)*-Inspect for cracks, wear or oiliness.
Check tensioner for proper operation. See the
service manual. (To purchase a service manual,
see the
Index under Publications.) Replace parts
as needed.
7 Cooling System Service*-Drain, flush and refill
the system with new or approved recycled coolant
conforming to
GM Specification 1825111. Keep
coolant at the proper mixture as specified. See the
Index under Coolant. 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.
8 Transaxle Service-For manual transaxles, fluid
doesn’t require changing.
For automatic transaxles, change both the fluid
and filter every
15,000 miles (25 000 lun) 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.
9
10
When doing frequent trailer towing. (With some
models,
you shouldn’t ever tow a trailer. See the
Index under Towing a Trailer.)
Uses such as found in taxi, police car or delivery
service.
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).
Spark Plug Replacement *-Replace spark plugs
with the proper type. See the
Index under
Replacement Parts.
Spark Plug Wire Inspection*+Inspect for
burns, cracks
or other damage. Check the boot fit
at the coils and at the spark plugs. Replace wires
as needed.
ProCarManuals.com

Maintenance Schedule
Section A: Scheduled Maintenance Services CCont.3
ITEM
NO.
11
12
SERVICE
Positive Crankcase Ventilation
Inspection*-Inspect system for proper function.
Replace any
worn, plugged or collapsed hoses or
seals. Replace valve only if necessary.
Exhaust Gas Recirculation (EGR) System
Inspection
(3.4L Code X engine only) %-
Conduct the EGR system service as described in
the service manual.
To purchase a service manual,
see the
Index under Service Publications.
ITEM
NO.
13
14
SERVICE
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
Fuel Tank,
Cap and Lines Inspection*&-Inspect
fuel tank, cap and lines (including fuel rails and
injection assembly) 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.
NOTE: To determine your engine’s displacement and code, see the Index under Engine Identification
* An Emission Control Service.
a The US. 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.
298
ProCarManuals.com

Section B: Owner Checks & Services
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.
At Each Fuel Fill (It is important for you or a sewice station attendant to perform these underhood checks at each fue\
l fill..)
CHECK
OR SERVICE WHAT TO DO
i
I Engine Oil Level
Check the engine oil level and add
the proper oil if necessary. See the Index under Engine Oil for
further details.
I
Engine Coolant Level Check the engine coolant level in the coolant recovery tank and add the proper coolant mix if
I necessary. See the Index under Coolant for further details.
Windshield Washer See the
Index under Windshield Washer Fluid for further details.
Fluid Level Check the windshield washer fluid level in
the windshield washer tank and add fluid
if necessary.
At Least Once a Month h
CHECK
OR SERVICE WHAT TO DO
Tire Inflation
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 or inside the trunk lid. See the
Index under Tires for further details.
At Least Twice a Year h I CHECK
OR SERVICE WHAT TO DO
Hydraulic Clutch
in this system could indicate a problem. Have the system inspected and repaired at once.
System Inspection Check the fluid level in
the clutch reservoir. See the Index under Hydraulic Clutch. A fluid loss
ProCarManuals.com