2005 CHEVROLET ASTRO Owners Manual

5. Remove the remaining three screws, the rst
one from the corner reector pocket and the
two remaining from the composite assembly.
6. Remove the composite assembly.7. Turn the halogen bulb
counterclockwise to
remove it from
the assembly.
8. Install the new bulb into the composite assembly by
turning it clockwise until it is completely tightened.
9. Reinstall the composite assembly by installing and
tightening all of the screws previously removed.
5-53

Front Turn Signal and Parking
Lamps
1. Remove the two screws at the inside edge of the
parking/turn signal lamp assembly.
2. Remove the lamp assembly.
3. Squeeze the tab on
the side of the lamp
socket while turning
the socket
counterclockwise.4. Pull the socket out of the lamp assembly.
5. Pull the bulb from the socket.
6. Gently push the new bulb into the socket.
7. Put the socket back into the lamp assembly and
turn it clockwise until it locks.
8. Put the parking/turn signal lamp assembly back into
the vehicle and tighten the screws.
5-54

Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
1. Open the rear door. SeeRear Doors on page 2-11
for more information.
2. Remove the
two screws from
behind the door.
3. Pull out the taillamp assembly so you can see
the socket.
5-55

4. Press the tab and
turn the socket
counterclockwise to
remove the socket
from the bezel. If the
socket does not have
a tab, turn the socket
counterclockwise to
remove the socket
from the bezel.
5. Remove the old bulb from the socket and replace it
with a new one.
6. Reverse Steps 1 through 4 to reinstall the taillamp.Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up Lamps 1156
Headlamps
Composite High-Beam 9005
Composite Low-Beam 9006
Sealed-Beam Headlamps H6054
Parking, Turn Signal Lamps 3157NA
Sidemarker Lamps 194
Stoplamps 2057
For replacement bulbs not listed here, contact
your dealer.
5-56

Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. See “Wiper
Blade Check” inAt Least Twice a Year on page 6-24
for more information.
To replace your windshield
wiper blade inserts, do the
following:
1. Lift the wiper arm away from the windshield.
2. Pinch the two tabs on the wiper arm and slide
the insert out of the blade.
3. Slide the new one in place.Make sure the tabs are locked into position. SeeNormal
Maintenance Replacement Parts on page 5-102for
the proper type of replacement blade.Rear Window Wiper Blade Replacement
If your vehicle is equipped with a rear window wiper
blade, follow the procedure above to replace the
wiper blade.
5-57

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 4-28.
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 5-64.
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.
5-58

Tire Sidewall Labelling
Useful information about a tire is molded into its
sidewall. The examples below show a typical passenger
vehicle tire and a compact spare tire sidewall.
(A) Tire Size:The tire size is a combination of letters
and numbers used to dene a particular tire’s width,
height, aspect ratio, construction type and service
description. See the “Tire Size” illustration later in this
section for more detail.(B) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed to
GM’s specic tire performance criteria have a TPC
specication code molded onto the sidewall. GM’s TPC
specications meet or exceed all federal safety
guidelines.
(C) DOT (Department of Transportation):The
Department of Transportation (DOT) code indicates that
the tire is in compliance with the U.S. Department of
Transportation Motor Vehicle Safety Standards.
(D) Tire Identication Number (TIN):The letters and
numbers following DOT (Department of Transportation)
code is the Tire Identication Number (TIN). The
TIN shows the manufacturer and plant code, tire size,
and date the tire was manufactured. The TIN is molded
onto both sides of the tire, although only one side
may have the date of manufacture.
(E) Tire Ply Material:The type of cord and number of
plies in the sidewall and under the tread.
(F) Uniform Tire Quality Grading (UTQG):Tire
manufacturers are required to grade tires based on
three performance factors: treadwear, traction and
temperature resistance. For more information see
Uniform Tire Quality Grading on page 5-68.
(G) Maximum Cold Ination Load Limit:Maximum
load that can be carried and the maximum pressure
needed to support that load. Passenger (P-Metric) Tire Example
5-59

(A) Temporary Use Only:The compact spare tire or
temporary use tire has a tread life of approximately
3,000 miles (5 000 km) and should not be driven
at speeds over 65 mph (105 km/h). The compact spare
tire is for emergency use when a regular road tire
has lost air and gone at. If your vehicle has a compact
spare tire, seeCompact Spare Tire on page 5-84
andIf a Tire Goes Flat on page 5-71.
(B) Tire Ply Material:The type of cord and number of
plies in the sidewall and under the tread.(C) Tire Identication Number (TIN):The letters
and numbers following the DOT (Department of
Transportation) code is the Tire Identication Number
(TIN). The TIN shows the manufacturer and plant code,
tire size, and date the tire was manufactured. The
TIN is molded onto both sides of the tire, although only
one side may have the date of manufacture.
(D) Maximum Cold Ination Load Limit:Maximum
load that can be carried and the maximum pressure
needed to support that load.
(E) Tire Ination:The temporary use tire or compact
spare tire should be inated to 60 psi (420 kPa).
For more information on tire pressure and ination see
Ination - Tire Pressure on page 5-64.
(F) Tire Size:A combination of letters and numbers
dene a tire’s width, height, aspect ratio, construction
type and service description. The letter T as the
rst character in the tire size means the tire is for
temporary use only.
(G) TPC Spec (Tire Performance Criteria
Specication):Original equipment tires designed to
GM’s specic tire performance criteria have a TPC
specication code molded onto the sidewall. GM’s
TPC specications meet or exceed all federal safety
guidelines. Compact Spare Tire Example
5-60