lock CHEVROLET EXPRESS 2004 Repair Manual

To reset the change engine oil light, do the following:
1. Turn the ignition key to RUN with the engine off.
2. Fully press and release the accelerator pedal slowly
three times within ve seconds.
3. If the Change Engine Oil light ashes for
ve seconds, the system is reset.
4. Turn the key to LOCK.
If the change engine oil light comes back on when you
start your vehicle, the engine oil life system has not
reset. Repeat the procedure. If it still does not reset, see
your dealer for service. SeeChange Engine Oil Light
on page 3-35.
What to Do with Used Oil
Used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer.
Do not let used oil stay on your skin for very long. Clean
your skin and nails with soap and water, or a good
hand cleaner. Wash or properly dispose of clothing or
rags containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from the
lter before disposal. Never dispose of oil by putting it inthe trash, pouring it on the ground, into sewers, or into
streams or bodies of water. Instead, recycle it by taking it
to a place that collects used oil. If you have a problem
properly disposing of your used oil, ask your dealer, a
service station or a local recycling center for help.
Engine Air Cleaner/Filter
The engine air cleaner/lter is located near the center of
the engine compartment. SeeEngine Compartment
Overview on page 5-12for more information on location.
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Then, without shutting off the engine, follow
these steps:
The transmission dipstick
is located near the center
of the engine compartment
and will be labeled with
the graphic shown.
SeeEngine Compartment Overview on page 5-12for
more information on location.
Flip the handle up and then pull out the dipstick and
wipe it with a clean rag or paper towel.
Push it back in all the way, wait three seconds and
then pull it back out again.
Check both sides of the dipstick, and read the lower
level. The uid level must be in the COLD area for
a cold check or in the HOT or cross-hatched
area for a hot check. Be sure to keep the dipstick
pointed down to get an accurate reading.
If the uid level is in the acceptable range, push the
dipstick back in all the way; then ip the handle
down to lock the dipstick in place.
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How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission uid to use. SeeRecommended
Fluids and Lubricants on page 6-13.
Using a funnel, add uid down the transmission dipstick
tube only after checking the transmission uid while it
is hot. A cold check is used only as a reference. If
the uid level is low, add only enough of the proper uid
to bring the level up to the HOT area for a hot check.
It does not take much uid, generally less than one pint
(0.5 L).Do not overll.
Notice:Use of automatic transmission uid labeled
other than DEXRON
®-III, Approved for the
H-Specication, may damage your vehicle, and the
damages may not be covered by your warranty.
Always use automatic transmission uid labeled
DEXRON
®-III, Approved for the H-Specication.
After adding uid, recheck the uid level as
described under “How to Check,” earlier in
this section.
When the correct uid level is obtained, push the
dipstick back in all the way; then ip the handle
down to lock the dipstick in place.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for ve years or 150,000 miles
(240 000 km), whichever occurs rst, if you add only
DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-24.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
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How to Add Coolant to the Radiator
1. You can remove the radiator pressure cap when
the cooling system, including the radiator pressure
cap and upper radiator hose, is no longer hot.
Turn the pressure cap slowly counterclockwise until
it rst stops. Do not press down while turning the
pressure cap.
If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left.
2. Then keep turning the pressure cap, but now push
down as you turn it. Remove the pressure cap.3. Fill the radiator with the proper DEX-COOL
®
coolant mixture, up to the base of the ller
neck. SeeEngine Coolant on page 5-22for more
information about the proper coolant mixture.
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Halogen Bulbs
{CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps
To remove the headlamp assembly from the vehicle and
access the bulbs, do the following:
1. Open the hood. SeeHood Release on page 5-11
for more information.
2. Remove the two bolts from the headlamp assembly.
3. Remove the two pins on the top of the headlamp
assembly. To remove the pins, turn the outer pin
clockwise and pull it straight up. To remove
the inner pin, turn it counterclockwise and pull it
straight up.
4. Lift the inboard side of the headlamp to release the
inboard tab from the radiator support.5. Lift the outboard side of the headlamp to release
the outboard tab from the radiator support.
6. Lower the headlamp to allow the vertical adjustor to
clear tie bar.
7. Turn the headlamp forward and upward to remove
it from the grille.
8. Turn the bulb connector counterclockwise and pull it
out of the housing.
9. Without removing the headlamp assembly itself,
remove the bulb socket from the back of the
headlamp on the driver’s side.
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10. Turn the bulb counterclockwise one quarter turn to
remove it from the socket.
11. On the passenger’s side, turn the bulb clockwise
one turn. Do not touch the glass part of the bulb.
12. Install the new bulb into the socket then reinstall it
into the headlamp assembly.
13. Put the headlamp assembly back into the vehicle
and reinstall the two pins.Front Turn Signal, Sidemarker and
Parking Lamps
To replace the front turn signal, sidemarker and/or
parking lamp bulb(s), do the following:
1. Use a small tool to unlatch the outboard clip on
the lamp.
2. Pull the lamp forward to completely unlatch the clip.
Move the lamp outboard to loosen the tabs.
3. Remove the lamp from the grille.
4. Squeeze the tab on the side of the bulb assembly
while turning it counterclockwise.
5. Remove the bulb assembly from the back of
the lens.
6. Replace the bulb.
7. Turn the socket clockwise to reinstall it in the lens
assembly.
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Center High-Mounted
Stoplamp (CHMSL)
Your vehicle’s center high-mounted stoplamp (CHMSL)
is located above the rear doors at the center of the
vehicle.
1. Remove the screws from the CHMSL assembly.
2. Remove the assembly.
3. Turn the bulb counterclockwise one quarter turn to
remove it from the socket.
4. Install a new bulb.
5. Reverse the steps to reinstall the assembly.If items are loaded on the roof of the vehicle, as in a
luggage carrier, care should be taken not to block
or damage the center high-mounted stoplamp unit.Taillamps
To replace the taillamp bulb(s), do the following:
1. Remove the
two inboard nuts on
the side assembly.
2. Pull the side assembly rearward to clear the studs.
3. Slide the assembly slightly upward to release
the lower clip.
4. Reinstall the clips to the side assembly.
5. Remove the three nuts on the taillamp assembly.
6. Remove the taillamp assembly from the vehicle.
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7. Remove the taillamp bulb socket by squeezing the
tab on the side of the socket while turning it
counterclockwise.
8. Turn the bulb counterclockwise to remove it.
9. Install a new bulb.
10. Reverse the steps to reinstall the lamp assemblies.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-up, Rear Parking,
Stoplamp, and Turn Signal Lamp3157
CHMSL 912
Front Parking and Turn
Signal Lamp3157KX
Front Sidemarker Lamp 194
Headlamps
Composite High-Beam 9005
Composite Low-Beam 9006GS
Sealed Beam Headlamp H6054
For replacement bulbs not listed here, contact your
dealer.
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Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. SeeScheduled
Maintenance on page 6-4for more information on wiper
blade inspection.
Replacement blades come in different types and are
removed in different ways. To remove the type with a
release clip, do the following:
1. Lift the wiper arm until it locks into a vertical
position.
2. Press down on the blade assembly pivot locking
tab. Pull down on the blade assembly to release it
from the wiper arm hook.
3. The insert has two notches at one end that are
locked by bottom claws of the blade assembly.
At the notched end, pull the insert from the blade
assembly.
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4. To install the new wiper insert, slide the notched
end last, into the end with two blade claws. Then
slide the insert all the way through the blade claws
at the opposite end.
5. Make sure that the notches are locked by the
bottom claws. Make sure that all other claws
are properly locked on both sides of the insert slot.
6. Put the blade assembly pivot in the wiper arm
hook. Pull it up until the pivot locking tab locks
in the hook slot.
7. Carefully lower the wiper arm and blade assembly
into the windshield.
Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service,
see your GM Warranty booklet for details. For additional
information refer to the tire manufacturer’s booklet
included with your vehicle’s Owner’s Manual.
{CAUTION:
Poorly maintained and improperly used tires
are dangerous.
Overloading your tires can cause
overheating as a result of too much
friction. You could have an air-out and a
serious accident. SeeLoading Your
Vehicle on page 4-29.
Underinated tires pose the same danger
as overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold. SeeInflation - Tire
Pressure on page 5-58.
Overinated tires are more likely to be
cut, punctured or broken by a sudden
impact — such as when you hit a pothole.
Keep tires at the recommended pressure.
Worn, old tires can cause accidents. If your
tread is badly worn, or if your tires have
been damaged, replace them.
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