2005 CHEVROLET SILVERADO Owners Manual

4. Put a new bulb into
the socket and turn
clockwise until it locks
in place.
5. Reinstall the lens and tighten the screws.
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Center High-Mounted Stoplamp
(CHMSL) and Cargo Lamp
To replace a center high-mounted stoplamp (CHMSL)
bulb, do the following:
1. Remove the screws and lift off the lamp assembly.A. Cargo Lamps
B. Center High-Mounted Stoplamp Bulbs
2. Remove the back plate from the assembly by
pressing the release tabs.
3. Remove the CHMSL bulb by pulling the bulb
straight out from the holder back plate.
Remove a cargo bulb by turning the socket
counterclockwise and pulling the bulb straight out.
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4. If a CHMSL bulb is replaced, put the new bulb into
the socket and press it in until it is tight.
If a cargo lamp is replaced, put a new cargo lamp
bulb into the socket and press it in until it is
tight before turning the socket counterclockwise.
5. Reinstall the back plate into the lamp assembly.
6. Reinstall the lamp assembly and tighten the screws.
Pickup Box Identication and
Fender Marker Lamps
To replace a pickup box identication or fender marker
lamp bulb, do the following:
1. Remove the screws and lamp assembly.
2. Unplug the lamp assembly harness.
3. Gently pry the individual lamp from the lamp
assembly.
4. Unplug the lamp.
5. Plug in a new lamp and snap it into the assembly.
6. Reinstall the lamp assembly.
Taillamps
To replace one of these bulbs, do the following:
1. Open the tailgate.Tailgate on page 2-15for more
information.
2. Remove the two rear
lamp assembly screws
near the tailgate
latch and pull out the
lamp assembly.
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3. Determine which of the following taillamp assembly
applies to your vehicle.
A. Stoplamp/Taillamp
B. Turn Signal
C. Back-up LampA. Stoplamp/Taillamp
B. Turn Signal Lamp
C. Back-up Lamp
D. Sidemarker Lamp
4. Press the release tab, if equipped, and turn the
bulb socket counterclockwise to remove it from
the taillamp assembly.
5. Pull the old bulb straight out from the socket.
6. Press a new bulb into the socket and turn the socket
clockwise into the taillamp assembly.
7. Reinstall the taillamp assembly.
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Taillamps (Chassis Cab Models)
A. Turn Signal Lamp
B. Taillamp/Stoplamp
C. Back-up Lamp
To replace one of these bulbs for chassis cab models,
do the following:
1. Peel the rubber seal away from the lens using
your hands.
2. Lift the lens off the lamp assembly.
3. Pull the old bulb straight out from the socket.
4. Install a new bulb into the socket and press it in
until it is tight.
5. Reinstall the lens and the lens seal.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 3157
Back-up Lamp* 1156
Cargo Lamp 912
Center High-Mounted Stoplamp
(CHMSL)912
Daytime Running Lamps (DRL) 4114K
Fender Marker Lamps 194
Front Parking and Turn Lamp 3457A
Front Roof Marker Lamps 194
Headlamps
High-Beam 9005
Low-Beam 9006
Rear Marker Lamp, Taillamp and
Stoplamp*3157
Rear Turn Signal Lamp 3157
Rear Turn Signal Lamp* 1156
Sidemarker Lamp (If Equipped) 194
Stoplamp and Taillamp* 1157
* Chassis Cab Models
For replacement bulbs not listed here, contact your
dealer.
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Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear and cracking. SeeScheduled Maintenance
(Gasoline Engine) on page 6-4for more information.
Replacement blades come in different types and
are removed in different ways. For proper type and
length, seeNormal Maintenance Replacement Parts
(Gasoline Engine) on page 6-17.
To replace the windshield wiper blade assembly do the
following:
1. Lift the wiper arm and turn the blade until it is
facing away from the windshield.
2. Push the release lever and slide the wiper assembly
toward the driver’s side of the vehicle.
3. Install a new blade by reversing Steps 1 and 2.
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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 4-50.
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 5-80.
CAUTION: (Continued)
CAUTION: (Continued)

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.
20-Inch Tires
If your vehicle has the optional 20-inch P275/55R20 size
tires, they are classied as touring tires and are designed
for on road use. The low-prole, wide tread design is
not recommended for “off-road” driving or commercial
uses such as snow plowing. SeeOff-Road Driving on
page 4-20andAdding a Snow Plow or Similar Equipment
on page 4-56for additional information.
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Tire Sidewall Labelling
Useful information about a tire is molded into the
sidewall. The following illustrations are examples of a
typical P-Metric and a LT-Metric tire sidewall.
(A) Tire Size:The tire size code 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 code are 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, seeUniform Tire
Quality Grading on page 5-86.
(G) Maximum Cold Ination Load Limit:Maximum
load that can be carried and the maximum pressure
needed to support that load. For information on
recommended tire pressure seeInation - Tire Pressure
on page 5-80andLoading Your Vehicle on page 4-50. Passenger (P-Metric) Tire
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