Starting the Engine
Automatic Transmission
Move your shift lever to PARK (P) or NEUTRAL (N).
Your engine will not start in any other position Ð that is
a safety feature. To restart when you are already
moving, use NEUTRAL (N) only.
Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could damage the
transmission. Shift to PARK (P) only when your
vehicle is stopped.
Manual Transmission
The shift lever should be in neutral and the parking
brake engaged. Hold the clutch pedal to the ¯oor and
start the engine. Your vehicle will not start if the
clutch pedal is not all the way down Ð that is a safety
feature.
Starting Your Engine
1. With your foot off the accelerator pedal and the
parking brake ®rmly applied, turn your ignition
key to START. When the engine starts, let go of the
key. The idle speed will go down as your engine
gets warm.
Notice:Holding your key in START for longer than
15 seconds at a time will cause your battery to
be drained much sooner. And the excessive heat
can damage your starter motor. Wait about
15 seconds between each try to help avoid draining
your battery or damaging your starter.
2. If it does not start, wait about 15 seconds and try
again to start the engine by turning the ignition key to
START. Wait about 15 seconds between each try.
When your engine has run about 10 seconds to
warm up, your vehicle is ready to be driven. Do not
run your engine at high speeds when it is cold.
If the weather is below freezing (32ÉF or 0ÉC), let
the engine run for a few minutes to warm up.
Notice:Your engine is designed to work with the
electronics in your vehicle. If you add electrical
parts or accessories, you could change the way the
engine operates. Before adding electrical equipment,
check with your dealer. If you do not, your engine
might not perform properly. Any resulting damage
would not be covered by your vehicle's warranty.
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2006 - Pontiac GTO Owner Manual
FIRST (1):This position gives you even more power
but lower fuel economy than SECOND (2). You can use
it on very steep hills, or in deep snow or mud. If the
shift lever is put in FIRST (1), the transmission will not
shift into ®rst gear until the vehicle is going slowly
enough.
Remember to move the shift lever back to DRIVE (D) so
that the transmission again upshifts into higher gears.
Even though the shift lever may be in FIRST (1),
the transmission does not select ®rst gear until vehicle
speed is less that 35 mph (56 km/h).
Manual Transmission Operation
This is the shift pattern for
the six-speed manual
transmission.Here is how to operate your transmission:
FIRST (1):Press the clutch pedal and shift into
FIRST (1). Then slowly let up on the clutch pedal as
you press the accelerator pedal.
You can shift into FIRST (1) when you are going less
than 40 mph (64 km/h). If you come to a complete stop
and it is hard to shift into FIRST (1), put the shift
lever in NEUTRAL and let up on the clutch. Press the
clutch pedal back down. Then shift into FIRST (1).
SECOND (2):Press the clutch pedal as you let up on
the accelerator pedal and shift into SECOND (2).
Then, slowly let up on the clutch pedal as you press the
accelerator pedal.
THIRD (3), FOURTH (4), FIFTH (5) and
SIXTH (6):Shift into THIRD (3), FOURTH (4), FIFTH (5)
and SIXTH (6) the same way you do for SECOND (2).
Slowly let up on the clutch pedal as you press the
accelerator pedal.
To stop, let up on the accelerator pedal and press the
brake pedal. Just before the vehicle stops, press
the clutch pedal and the brake pedal, and shift to
NEUTRAL.
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2006 - Pontiac GTO Owner Manual
NEUTRAL:Use this position when you start or idle
your engine. Your shift lever is in NEUTRAL when it is
centered in the shift pattern, not in any gear.
REVERSE (R):To back up, press down the clutch
pedal and shift into REVERSE (R). Apply pressure to
get the lever past FIFTH (5) and SIXTH (6) into
REVERSE (R). Let up on the clutch pedal slowly while
pressing the accelerator pedal.Shift Speeds
{CAUTION:
If you skip a gear when you downshift, you
could lose control of your vehicle. You could
injure yourself or others. Do not shift down
more than one gear at a time when you
downshift.
This chart shows when to shift to the next gear for the
best fuel economy.
Manual Transmission Recommended Shift
Speeds
1to2 2to3 3to4 4to5 5to6
16 mph
(25 km/h)22 mph
(35 km/h)30 mph
(48 km/h)40 mph
(65 km/h)50 mph
(80 km/h)
If your speed drops below 20 mph (32 km/h), or if the
engine is not running smoothly, you should downshift to
the next lower gear.
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2006 - Pontiac GTO Owner Manual
Pausing Cruise Control
To pause cruise control, press the brake pedal on either
an automatic or manual transmission, or the clutch
pedal on a manual transmission, or press the
ON-OFF/CANCEL switch once.
This deactivates the cruise control but retains the speed
in its memory. The CRUISE ACTIVE message and
cruise control symbol on the trip computer will turn off.
To regain the memory speed, momentarily turn the
lever up to the RES-ACCEL position, provided you are
travelling over 25 mph (40 km/h). Holding the lever
in the RES-ACCEL position for longer than one second
causes the vehicle to accelerate.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase your speed.
When you take your foot off the pedal, your vehicle will
slow down to the cruise control speed you set earlier.
Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load, and the steepness of the
hills. When going up steep hills, you may have to step
on the accelerator pedal to maintain your speed.When going downhill, you may have to brake or shift to
a lower gear to keep your speed down. Of course,
applying the brake takes you out of cruise control. Many
drivers ®nd this to be too much trouble and do not
use cruise control on steep hills.
Ending Cruise Control
Pressing the ON-OFF/CANCEL switch once pauses the
cruise control but keeps the system ready and the
speed in memory.
Press the ON-OFF/CANCEL switch twice to turn off
cruise control completely. The cruise control symbol and
message will turn off.
A third press turns the system back on to ready, without
any speed memory.
Turning off the ignition completely turns off cruise
control and wipes the speed memory clear.
Cruise control will be canceled if the Traction Control
System (TCS) becomes active. See
Traction Control
System (TCS) on page 4-9.
Erasing Speed Memory
Pressing the ON-OFF/CANCEL switch twice to turn off
the cruise control or turning off the ignition will erase
the cruise control set speed memory.
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2006 - Pontiac GTO Owner Manual
Service............................................................5-3
Accessories and Modi®cations..........................5-3
California Proposition 65 Warning.....................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of Your
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Speci®cations....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Oil Life System..................................5-16
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-19
Manual Transmission Fluid.............................5-21
Hydraulic Clutch...........................................5-22
Engine Coolant.............................................5-23
Radiator Pressure Cap..................................5-26
Engine Overheating.......................................5-26Cooling System............................................5-29
Power Steering Fluid.....................................5-33
Windshield Washer Fluid................................5-34
Brakes........................................................5-35
Battery........................................................5-38
Jump Starting...............................................5-39
Headlamp Aiming...........................................5-44
Bulb Replacement..........................................5-46
Halogen Bulbs..............................................5-46
Headlamps..................................................5-46
Front Turn Signal and Parking Lamps..............5-48
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-49
Replacement Bulbs.......................................5-50
Windshield Wiper Blade Replacement..............5-51
Tires..............................................................5-52
Tire Sidewall Labeling...................................5-54
Tire Terminology and De®nitions.....................5-56
In¯ation - Tire Pressure.................................5-59
Tire Inspection and Rotation...........................5-62
When It Is Time for New Tires.......................5-63
Buying New Tires.........................................5-64
Different Size Tires and Wheels......................5-65
Uniform Tire Quality Grading..........................5-66
Wheel Alignment and Tire Balance..................5-67
Wheel Replacement......................................5-67
Section 5 Service and Appearance Care
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2006 - Pontiac GTO Owner Manual
A. Engine Compartment Fuse Block. SeeEngine
Compartment Fuse Block on page 5-88.
B. Windshield Washer Fluid Reservoir. See ªAdding
Washer Fluidº under
Windshield Washer Fluid
on page 5-34.
C. Battery. See
Battery on page 5-37.
D. Radiator Pressure Cap (Out of View). See
Radiator
Pressure Cap on page 5-26.
E. Engine Oil Dipstick. See ªChecking Engine Oilº
under
Engine Oil on page 5-13.
F. Engine Oil Fill Cap. See ªWhen to Add Engine Oilº
under
Engine Oil on page 5-13.
G. Automatic Transmission Dipstick (If Equipped). See
ªChecking the Fluid Levelº under
Automatic
Transmission Fluid on page 5-19.
H. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-33.
I. Brake Fluid Reservoir. See ªBrake Fluidº under
Brakes on page 5-35.
J. Hydraulic Clutch Fluid Reservoir (If Equipped). See
Hydraulic Clutch on page 5-22.
K. Engine Air Cleaner/Filter. See
Engine Air
Cleaner/Filter on page 5-18.
L. Engine Coolant Over¯ow Reservoir. See
Engine
Coolant on page 5-23.
Engine Oil
If the Service Engine Oil message appears on the trip
computer display, it means you need to check your
engine oil level right away. For more information, see
Trip Computer on page 3-33. You should check
your engine oil level regularly; this is an added reminder.
Checking Engine Oil
It is a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop. See
Engine Compartment Overview on page 5-12for
the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If you do not do this,
the oil dipstick might not show the actual level.
2. Pull out the dipstick and clean it with a paper towel
or cloth, then push it back in all the way. Remove it
again, keeping the tip down, and check the level.
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2006 - Pontiac GTO Owner Manual
How to Add Manual Transmission Fluid
Here is how to add ¯uid. Refer to the Maintenance
Schedule to determine what kind of ¯uid to use. See
Recommended Fluids and Lubricants on page 6-12.
1. Remove the reverse light switch.
2. Add ¯uid at the switch hole. Add only enough
¯uid to bring the ¯uid level up to the bottom of
the switch hole.
3. Install the reverse light switch. Be sure the switch is
fully seated.
Hydraulic Clutch
The clutch ¯uid level should be checked weekly. A ¯uid
loss in this system could indicate a problem. If the
clutch ¯uid requires constant ®lling it could indicate a
leak. Have the system inspected and repaired by
your dealer. Adding ¯uid will not correct a leak.
When to Check and What to Use
Refer to the Maintenance
Schedule to determine the
proper ¯uid. See
Owner
Checks and Services
on page 6-8
andRecommended Fluids and
Lubricants on page 6-12.
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2006 - Pontiac GTO Owner Manual
Recommended Fluids and
Lubricants
Fluids and lubricants identi®ed below by name, part
number, or speci®cation may be obtained from
your dealer.
Usage Fluid/Lubricant
Engine OilThe engine requires a special
engine oil meeting GM Standard
GM4718M. Oils meeting this
standard may be identi®ed as
synthetic, and should also be
identi®ed with the American
Petroleum Institute Certi®ed for
Gasoline Engines starburst symbol.
However, not all synthetic API oils
with the starburst symbol will meet
this GM standard. You should look
for and use only an oil that meets
GM Standard GM4718M. GM
Goodwrench
žoil meets all the
requirements for your vehicle. For
the proper viscosity, see
Engine Oil
on page 5-13.
Usage Fluid/Lubricant
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
ž
Coolant. SeeEngine Coolant on
page 5-23.
Hydraulic Brake
SystemHydraulic Brake Fluid. Use only
GM Part No. U.S. 88958860, in
Canada 88901244, Super DOT-4
brake ¯uid.
Windshield
WasherGM Optikleen
žWasher Solvent.
Hydraulic
Clutch SystemHydraulic Clutch Fluid. Use only
GM Part No. U.S. 88958860, in
Canada 88901244, Super DOT-4
brake ¯uid.
Parking Brake
Cable GuidesChassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Power Steering
SystemDEXRON
ž-III Automatic
Transmission Fluid. Look for
ªApproved for the H-Speci®cationº
on the label.
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2006 - Pontiac GTO Owner Manual