2007 BUICK LUCERNE lock

3. Remove the 3800 Series II V6 engine cover
shield to access the bleed valve.
3.1. Clean the area around the engine oil ll
tube and cap before removing. Twist
the oil ll tube, with cap attached,
counterclockwise and remove it.
3.2. Lift the engine cover shield at the front,
slide the catch tab out of the engine
bracket and remove the cover shield.
3.3. Put the oil ll tube, with cap attached, in
the valve cover oil ll hole until you are
ready to replace the cover shield.4. After the engine
cools, open the
coolant air bleed
valve. There is one
bleed valve. It is
located on the
thermostat housing.
5. Fill the radiator with the proper DEX-COOL
®
coolant mixture, up to the base of the ller
neck. SeeEngine Coolant on page 347
for more information about the proper coolant
mixture.
If you see a stream of coolant coming from an
air bleed valve, close the valve. Otherwise,
close the valve after the radiator is lled.
6. Rinse or wipe any spilled coolant from the
engine and the compartment.
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7. Replace the 3800 Series II V6 engine cover
shield.
7.1. Remove the oil ll tube, with cap
attached, from the valve cover.
7.2. Insert the catch tab on the cover shield
under the bracket on the engine.
7.3. Place the hole in the cover shield over
the hole in the valve cover. Install oil ll
tube and cap by twisting clockwise.
8. Then ll the coolant recovery tank to the
FULL COLD mark.
9. Put the cap back on the coolant recovery tank,
but leave the radiator pressure cap off.10. Start the engine and let it run until you can
feel the upper radiator hose getting hot.
Watch out for the engine cooling fans.
11. By this time, the coolant level inside the
radiator ller neck may be lower. If the level is
lower, add more of the proper DEX-COOL
®
coolant mixture through the ller neck until the
level reaches the base of the ller neck.
12. Then replace the pressure cap. At any time
during this procedure if coolant begins to ow
out of the ller neck, reinstall the pressure
cap. Be sure the arrow on the pressure
cap lines up properly.
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Notice:In cold weather, water can freeze and
crack the engine, radiator, heater core and
other parts. Use the recommended coolant and
the proper coolant mixture.
{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. Do not spill
coolant on a hot engine.You can remove the coolant surge tank pressure
cap when the cooling system, including the
coolant surge tank pressure cap and upper
radiator hose, is no longer hot.
1. Turn the pressure cap slowly
counterclockwise. If you hear a hiss, wait for
that to stop. A hiss means there is still
some pressure left.
2. Then keep turning the cap and remove it.
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Replacing Brake System Parts
The braking system on a vehicle is complex. Its
many parts have to be of top quality and work well
together if the vehicle is to have really good
braking. Your vehicle was designed and tested
with top-quality GM brake parts. When you replace
parts of your braking system — for example,
when your brake linings wear down and you need
new ones put in — be sure you get new
approved GM replacement parts. If you do not,
your brakes may no longer work properly.
For example, if someone puts in brake linings that
are wrong for your vehicle, the balance between
your front and rear brakes can change — for
the worse. The braking performance you have
come to expect can change in many other ways
if someone puts in the wrong replacement
brake parts.
Battery
Your vehicle has a maintenance free battery.
When it is time for a new battery, get one that has
the replacement number shown on the original
battery’s label. We recommend an ACDelco
®
replacement battery.
Warning:Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harm. Wash
hands after handling.
The battery is located under the rear seat cushion.
To access the battery, see “Removing the Rear
Seat Cushion” underRear Underseat Fuse
Block on page 431. You do not need to access
the battery to jump start your vehicle. See
Jump Starting on page 372.
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6. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being adjusted. Do not place
directly on the headlamp. This allows only the
beam of light from the headlamp being
adjusted to be seen on the at surface.
7. Locate the vertical headlamp aiming screws,
which are under the hood near each headlamp
assembly.
The adjustment screw can be turned with a
6 mm male hex.8. Turn the vertical aiming screw until the
headlamp beam is aimed to the horizontal tape
line. Turn it clockwise or counterclockwise to
raise or lower the angle of the beam.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal
tape line. The lamp on the left (A) shows
the correct headlamp aim. The lamp on the
right (B) shows the incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite
headlamp.
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To replace one of these bulbs, do the following:
1. Open the trunk. SeeTrunk on page 106
for more information.
2. Remove the convenience net, if the vehicle
has one.
3. Remove the plastic wing nuts retaining the
trunk trim.
4. Pull back the trunk trim.
5. Remove the three hex nuts holding the
taillamp assembly in place.6. Pull out the taillamp assembly.
7. Turn the bulb socket counterclockwise and
pull it straight out to remove it.
8. Replace the old bulb with a new one.
9. Turn the bulb socket clockwise to reinstall.
10. Reverse these steps to reinstall the taillamp
assembly.
When reinstalling the taillamp assembly, make
sure the plastic pin on the taillamp assembly
lines up and is inserted correctly into the
opening of the vehicle.
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Taillamps and Back-Up Lamps
A. Taillamp
B. Back-up Lamp
To replace an auxiliary taillamp or back-up lamp
bulb, do the following:
1. Open the trunk. SeeTrunk on page 106for
more information.2. Remove the three fasteners from the
trunk trim.
3. Pull back the trunk trim to access the bulbs.
4. Turn the bulb socket counterclockwise to
remove it.
5. Pull the bulb straight out.
6. Replace the bulb and reinstall it in the
assembly by turning it clockwise.
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License Plate Lamp
To replace one of these bulbs, do the following:
1. Remove the license plate.
2. Reach up through the opening above the
license plate to access the two license
plate lamps.
3. Turn the socket counterclockwise to remove.
4. Grasp the bulb in the socket and pull
straight out.
5. Push the bulb straight into the socket until it
clicks to secure it.
6. Reverse Steps 1 through 3 to reinstall the
bulb socket.
Replacement Bulbs
Exterior Lamps Bulb Number
Back-up Lamp 921
Sidemarker, License Plate Lamp,
and Auxiliary Taillamp194
Stoplamp, Taillamp, and Turn
Signal Lamp3057K
For replacement bulbs not listed here, contact
your dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear or cracking. SeeScheduled Maintenance
on page 442.
It is a good idea to clean or replace the wiper
blade assembly on a regular basis or when worn.
For proper windshield wiper blade length and
type, seeNormal Maintenance Replacement Parts
on page 453.
383