1999 PONTIAC GRAND PRIX check engine

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6-28 Checking Coolant
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the COLD
mark or a little higher. When your engine is warm, the
level should be up to the HOT mark or a little higher.
If this LOW COOLANT
light comes on and stays on,
it means you're low on
engine coolant.
Adding Coolant
If you need more coolant, add the proper DEX
-COOL

coolant mixture at the coolant recovery tank, but be
careful not to spill it.
If the coolant recovery tank is completely empty, add
coolant to the radiator. (See ªEngine Overheatingº in
the Index.)

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6-29
CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
With the coolant recovery tank, you will almost
never have to add coolant at the radiator. Never
turn the radiator pressure cap
-- even a
little
-- when the engine and radiator are hot.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
Power Steering Fluid
3100 Engine 3800 or 3800
Supercharged Engine
The power steering fluid reservoir is toward the rear of
the engine compartment, on the passenger's side.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.

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6-30 How to Check Power Steering Fluid
When the engine compartment is cool, wipe the cap and
the top of the reservoir clean, then unscrew the cap and
wipe the dipstick with a clean rag. Replace the cap and
completely tighten it. Then remove the cap again and
look at the fluid level on the dipstick.
The level should be at the C or COLD mark. If
necessary, add only enough fluid to bring the level up to
the mark.
3100 Engine
3800 or 3800 Supercharged Engine
When the engine compartment is hot, the level should be
at the H or HOT mark. When it's cold, the level should
be at the C or COLD mark. If the fluid is at the ADD
mark, you should add fluid.
What to Use
To determine what kind of fluid to use, see
ªRecommended Fluids and Lubricantsº in the Index.
Always use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and seals.

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6-66
Replacement Bulbs
Exterior Lamps Bulb Number. . . . . . . . . . . . . . . . .
Back
-Up 3156. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center High
-Mounted Stop 1141. . . . . . . . . . . . . . . .
Front Parking/Turn Signal 3357 NAK. . . . . . . . . . . . .
Headlamps High/Low Beam 9007. . . . . . . . . . . . . . .
Stop/Tail/Turn Signal 3057. . . . . . . . . . . . . . . . . . . . .
Front Sidemarker 194. . . . . . . . . . . . . . . . . . . . . . . . .
Rear Sidemarker 194. . . . . . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications
Please refer to ªRecommended Fluids and Lubricantsº
in the Index for more information.
Automatic Transaxle with Overdrive
Pan Removal and Replacement 8.0 quarts (7.5 L). . .
After Complete Overhaul 10.0 quarts (9.5 L). . . . . . .
*When draining/replacing converter or auxiliary
cooler, more fluid may be needed.Cooling System Including Reservoir
3100 (Code M) 11.0 quarts (10.42 L). . . . . . . . . . . . . .
3800 (Code K) 12.3 quarts (11.7 L). . . . . . . . . . . . . . .
3800 Supercharged (Code 1) 12.3 quarts (11.7 L). . . .
Refrigerant (R
-134a),
Air Conditioning*1.9 lbs. (0.85 kg) . . . . . . . . . . . .
Engine Crankcase (Oil Change with Filter Change)
3100 (Code M) 4.5 quarts (4.3 L). . . . . . . . . . . . . . . .
3800 (Code K) 4.5 quarts (4.3 L). . . . . . . . . . . . . . . .
3800 Supercharged (Code 1) 4.5 quarts (4.3 L). . . . .
Fuel Tank17.7 gallons (67 L) . . . . . . . . . . . . . . . . . .
*See ªAir Conditioning Refrigerantsº later in
this section.
Note: All capacities are approximate. When adding
fluid, be sure to fill to the appropriate level, as
recommended in this manual. Recheck fluid level after
filling. See ªRecommended Fluids and Lubricantsº in
the Index for more information.

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Scheduled Maintenance
7-5
The services shown in this schedule up to 100,000 miles
(166 000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals. The services shown
at 150,000 miles (240 000 km) should be performed at
the same interval after 150,000 miles (240 000 km).
See ªOwner Checks and Servicesº and ªPeriodic
Maintenance Inspectionsº following.
Footnotes

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 the vehicle's useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the maintenance
be recorded.* Your vehicle has an Engine Oil Life Monitor. This
monitor will show you when to change the engine oil
and filter
-- usually between 3,000 miles (5 000 km) and
7,500 miles (12 500 km) since your last oil change.
Under severe conditions, the indicator may come on
before 3,000 miles (5 000 km). Never drive your vehicle
more than 7,500 miles (12 500 km) or 12 months
without an oil and filter change.
The system won't detect dust in the oil. So if you drive
in a dusty area, be sure to change your oil and filter
every 3,000 miles (5 000 km) or sooner if the CHANGE
OIL SOON light comes on. Remember to reset the Oil
Life Monitor whenever the oil is changed. For more
information, see ªChange Oil Soon Lightº in the Index.
+ A good time to check your brakes is during tire
rotation. See ªBrake System Inspectionº under ªPeriodic
Maintenance Inspectionsº in Part C of this schedule.

Scheduled Maintenance
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7-6
7,500 Miles (12 500 km)
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See ªEngine Oilº in the Index.
An Emission Control Service. (See footnote *.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
15,000 Miles (25 000 km)
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See ªEngine Oilº in the Index.
An Emission Control Service. (See footnote *.)
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter
if necessary.
An Emission Control Service. (See footnote
.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
22,500 Miles (37 500 km)
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See ªEngine Oilº in the Index.
An Emission Control Service. (See footnote *.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE

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Scheduled Maintenance
7-7
30,000 Miles (50 000 km)
Check Oil Life Monitor. If engine oil and filter are changed,
reset monitor. See ªEngine Oilº in the Index.
An Emission Control Service. (See footnote *.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote
.)
For supercharged engines only: Check the supercharger oil level and add oil as
needed (or every 36 months, whichever occurs first). See ªRecommended
Fluids and Lubricantsº in this section.
An Emission Control Service. (See footnote
.)
37,500 Miles (62 500 km)
Check Oil Life Monitor. If engine oil and filter are changed,
reset monitor. See ªEngine Oilº in the Index.
An Emission Control Service. (See footnote *.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE

Scheduled Maintenance
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7-8
45,000 Miles (75 000 km)
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See ªEngine Oilº in the Index.
An Emission Control Service. (See footnote *.)
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter
if necessary.
An Emission Control Service. (See footnote
.)
Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)
50,000 Miles (83 000 km)
Change automatic transaxle fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
± In heavy city traffic where the outside temperature regularly reaches 90F
(32C) or higher.
± In hilly or mountainous terrain.
± When doing frequent trailer towing.
± Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these conditions, change the fluid
and filter at 100,000 miles (166 000 km).
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE