1999 PONTIAC FIREBIRD transmission

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6-20
4. Close the cover without overlap (the clamp will not
latch with overlap) and latch the clamps.
Automatic Transmission Fluid
When to Check and Change
A good time to check your automatic transmission fluid
level is when the engine oil is changed.
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 heavy city traffic where the outside temperature
regularly reaches 90F (32C) or higher.

In hilly or mountainous terrain.

Uses such as high performance operation.

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 every
50,000 miles (83 000 km).
See ªScheduled Maintenance Servicesº in the Index.

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6-21 How to Check
Because this operation can be a little difficult, you
may choose to have this done at the 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.
NOTICE:
Too much or too little fluid can damage your
transmission. Too much can mean that some of
the fluid could come out and fall on hot engine
parts or exhaust system parts, starting a fire. Be
sure to get an accurate reading if you check your
transmission fluid.
Wait at least 30 minutes before checking the
transmission fluid level if you have been driving:

When outside temperatures are above 90F (32C).

At high speed for quite a while.

In heavy traffic
-- especially in hot weather.

While pulling a trailer.To get the right reading, the fluid should be at normal
operating temperature, which is 180F to 200F
(82C to 93C).
Get the vehicle warmed up by driving about 15 miles
(24 km) when outside temperatures are above 50F
(10C). If it's colder than 50F (10C), drive the
vehicle in AUTOMATIC OVERDRIVE (D) until the
engine temperature gage moves and then remains steady
for 10 minutes. Then follow the hot check procedures.
Checking Transmission Fluid Cold
A cold check is made after the vehicle has been sitting
for eight hours or more with the engine off and is used
only as a reference. Let the engine run at idle for five
minutes if outside temperatures are 50F (10C) or
more. If it's colder than 50F (10C), you may have to
idle the engine longer. Should the fluid level be low
during a cold check, you must perform a hot check
before adding fluid. This will give you a more accurate
reading of the fluid level.

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6-23
1. The red transmission dipstick is located near the
back of the engine. Flip the handle up and then
pull out the dipstick and wipe it with a clean rag or
paper towel.
2. Push it back in all the way, wait three seconds and
then pull it back out again.
3800 V6 Transmission Dipstick
5.7L V8 Transmission Dipstick

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6-24
3. Check both sides of the dipstick, and read the lower
level. The fluid level must be in the COLD area,
below the cross
-hatched area for a cold check or in
the HOT area or cross
-hatched area for a hot check.
4. If the fluid level is in the acceptable range, push the
dipstick back in all the way; then flip the handle
down to lock in place.
How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. See ªRecommended
Fluids and Lubricantsº in the Index.
Add fluid only after checking the transmission fluid
while it is hot. (A cold check is used only as a
reference.) If the fluid level is low, add only enough of
the proper fluid to bring the level up to the HOT area for
a hot check. It doesn't take much fluid, generally less
than one pint (0.5 L). Don't overfill.
NOTICE:
We recommend you use only fluid labeled
DEXRON-III, because fluid with that label is
made especially for your automatic transmission.
Damage caused by fluid other than
DEXRON
-III is not covered by your new
vehicle warranty.

After adding fluid, recheck the fluid level as
described under ªHow to Check.º

When the correct fluid level is obtained, push the
dipstick back in all the way.
Manual Transmission Fluid
When to Check
A good time to have it checked is when the engine oil is
changed. However, the fluid in your manual
transmission doesn't require changing.

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6-25 How to Check
Because this operation can be difficult, you may
choose to have this done at your Pontiac dealership
Service Department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading.
NOTICE:
Too much or too little fluid can damage your
transmission. Too much can mean that some of
the fluid could come out and fall on hot engine
parts or exhaust system parts, starting a fire. Be
sure to get an accurate reading if you check your
transmission fluid.
Check the fluid level only when your engine is off, the
vehicle is parked on a level place and the transmission is
cool enough for you to rest your fingers on the
transmission case.Then, follow these steps:
6-Speed (5-Speed Similar)
1. Remove the filler plug.
2. Check that the lubricant level is up to the bottom of
the filler plug hole.
3. If the fluid level is good, install the plug and be sure
it is fully seated. If the fluid level is low, add more
fluid as described in the next steps.

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6-67
Main Fuse Block
Fuse Usage
STOP/HAZARD Hazard Flashers, Brake Switch
Assembly
TURN B/U Traction Control Switch, Back/Up
Lamp Switch, Turn Flasher,
Daytime Running Lamps (DRL)
ModuleFuse Usage
STG WHEEL
CNTRLSteering Wheel Controls
RADIO ACCY Delco Monsoon Radio Amplifier,
Power Antenna, Remote CD
Player (Hatch)
TAIL LPS Daytime Running Lamps (DRL)
Module, Headlamp Switch
HVAC HVAC Selector Switch, Rear
Defogger Switch/Timer
PWR ACCY Parking Lamp Relay, Hatch
Release Relay, Power Mirror
Switch, Radio, Shock Sensor,
Instrument Cluster
COURTESY Body Control Module (BCM)
GAUGES Body Control Module (BCM),
Brake
-Transmission Shift
Interlock (BTSI), Instrument
Cluster, Daytime Running Lamps
(DRL) Module
AIR BAG Air Bag

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6-70
Fuse and Relay Center 2
Fuse Usage
INJ Fuel Injectors (Not used for V6)
(LH injectors for V8 Ignition
Module)
INJ Fuel Injectors (All for V6) (RH
injectors for V8 and Ignition
Module)Fuse Usage
ENG SEN Mass Air Flow Sensor, Heated
Oxygen Sensor, Skip Shift
Solenoid (V8 Only), Reverse
Lockout Solenoid, Brake Switch
STRTR Powertrain Control Module
(PCM), Clutch Pedal Switch
ABS IGN Anti
-Lock Brake System Module
PCM IGN Powertrain Control Module
(PCM)
ETC Electronic Throttle Control
(V6 Only)
ENG CTRL Ignition Module (V6 Only),
Automatic Transmission, Charcoal
Canister Purge Solenoid
A/C CRUISE Air Conditioning Compressor
Relay, Cruise Control Switches
and Module
ENG CTRL Engine Controls, Fuel Pump,
Powertrain Control Module
(PCM), A.I.R. Pump and
Cooling Fans

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6-71
Fuse Usage
I/P
-1 HVAC Blower Control and Relay
IGN Ignition Switch, Relay and Starter
Enable Relay
I/P
-2 Instrument Panel Fuse Center
Relay Description
AIR SOL Air Solenoid
AIR PUMP Air Pump
A/C COMP Air Conditioning Compressor
FUEL PUMP Fuel Pump
STARTER Starter
IGN Engine Controls, Cruise Controls,
Air Conditioning
Replacement Bulbs
Back-up 3155. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center High
-Mounted Stoplamp 921. . . . . . . . . . . . .
Front Parking and Turn Signal 3157NAK. . . . . . . . . .
Headlamp
High Beam 4701. . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Beam 4703. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sidemarker Lamp 194. . . . . . . . . . . . . . . . . . . . . . . . .
Tail Lamp Only 194. . . . . . . . . . . . . . . . . . . . . . . . . .
Tail/Stop/Turn Lamps 3057. . . . . . . . . . . . . . . . . . . .
Capacities and Specifications
The following approximate capacities are given in
English and metric conversions. Please refer to
ªRecommended Fluids and Lubricantsº in the
Index for more information.
Air Conditioning
See the refrigerant . . . . . . . . . . . . .
information label under the hood.
Automatic Transmission
Drain and Refill 5.0 quarts (4.7 L). . . . . . . . . . . . . . .
Overhaul
3800 V6 8.8 quarts (8.3 L). . . . . . . . . . . . . . . . . . . .
5.7L V8 10.8 quarts (10.2 L). . . . . . . . . . . . . . . . . .