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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 hex socket.8. Turn the vertical aiming screw until the
headlamp beam is aimed to the horizontal tape
line. If you turn it clockwise, it will raise the
beam and if you turn it counterclockwise, it will
lower the beam.
The top edge of the cut-off should be
positioned at the bottom edge of the horizontal
tape line.
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.
Passenger’s Side Shown
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Front Turn Signal and Fog Lamps
A. Turn Signal Lamp
B. Fog Lamp
To replace a turn signal or fog lamp bulb, do the
following:
1. Remove the protection shield located on the
underside of the front of the vehicle by pulling
out the push-pins located on the underside
of the protection shield.
2. Reach up behind the front bumper area from
under the vehicle to access the lamp housing.3. Remove the bulb socket from the housing by
turning the bulb socket one-quarter turn
counterclockwise.
4. Remove the electrical connector from the bulb
by lifting the two plastic clips.
5. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
6. Install a new bulb.
7. Reverse the steps to reinstall the lamp
assembly.
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Taillamps, Turn Signal, Stoplamps
and Sidemarker Lamps
A. Taillamps and
Stoplamps
B. Turn Signal Lamp
C. Sidemarker Lamp
1. Open the trunk. SeeTrunk on page 104for
more information.
2. Remove the compact spare tire cover by
turning the wing nut counterclockwise.3. Remove the four convenience net wing nuts.
4. Pull the carpet back away from the body
of the vehicle on the side with the burned
out bulb.
5. Remove the two mounting screws from the
lamp assembly.
6. Pull out the lamp assembly to expose the bulb
sockets.
7. Turn the bulb socket one-quarter turn
counterclockwise and pull the bulb socket out
of the lamp re ector.
8. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
9. Install a new bulb.
10. Reverse the steps to reinstall the lamp
assembly.
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Page 389 of 518

Back-Up and License Plate Lamps
A. Back-Up Lamps
B. License Plate Lamps
To replace a back-up or license plate bulb, do the
following:
1. Open the trunk. SeeTrunk on page 104for
more information.
2. Remove the cloth cover on the underside of
the trunk lid by pulling out the three push-pins
located on the underside of the trunk lid.
3. Remove the eight mounting nuts from the
underside of the trunk lid by turning the
nuts counterclockwise.4. Pull the lamp assembly away from the vehicle
to expose the bulb sockets.
5. Turn the bulb socket one-quarter turn
counterclockwise and pull the bulb and socket
out of the lamp re ector.
6. Pull the old bulb from the bulb socket keeping
the bulb straight as you pull it out.
7. Install a new bulb.
8. Reverse the steps to reinstall the lamp
assembly.Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up, Front/Rear Turn Signal,
Stoplamp and Taillamp3157K
Fog Lamp 9145
License Plate Lamp W5WLL
Rear Sidemarker Lamp W5WLL
For replacement bulbs not listed here, contact
your dealer/retailer.
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5. Squeeze the tab together and pull the wiper
blade assembly down far enough to release it
from the J-hooked end of the wiper arm.
Slide the assembly away from the arm.
Allowing the wiper blade arm to touch the
windshield when no wiper blade is installed
could damage the windshield. Any damage
that occurs would not be covered by your
warranty. Do not allow the wiper blade arm to
touch the windshield.
6. Replace the blade with a new one.
7. Reinstall the wiper blade assembly by sliding
it over the wiper arm to engage the J-hooked
end. Pull up on the assembly to lock it into
place.
8. Repeat the steps for the other wiper.
391
Page 407 of 518

Your vehicle’s TPMS can alert you about a low
tire pressure condition but it does not replace
normal tire maintenance. SeeTire Inspection and
Rotation on page 409andTires on page 392.
Notice:Do not use a tire sealant if your vehicle
has Tire Pressure Monitors. The liquid sealant
can damage the tire pressure monitor sensors.
Resetting the TPMS Identi cation
Codes
Each TPMS sensor has a unique identi cation
code. Any time you replace one or more of
the TPMS sensors or rotate the tires, the
identi cation codes will need to be matched to the
new tire and wheel position. The sensors are
matched to the tire and wheel positions in
the following order: driver’s side front tire,
passenger’s side front tire, passenger’s side rear
tire, and driver’s side rear tire using a TPMS
diagnostic tool. See your GM dealer for service.
The TPMS sensors may also be matched to each
tire and wheel position by increasing or
decreasing the tire’s air pressure. When increasing
tire pressure do not exceed the maximum
in ation pressure indicated on the tire’s sidewall.You will have two minutes to match the rst tire
and wheel position, and ve minutes overall
to match all four tire and wheel positions. If it takes
longer than two minutes, to match the rst tire
and wheel, or more than ve minutes to match all
four tire and wheel positions the matching
process stops and you will need to start over.
The TPM matching process is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON with the
engine off.
3. Using the Remote Keyless Entry (RKE)
transmitter, lock and unlock the vehicle’s
doors.
4. Press the lock and unlock buttons, at the
same time, on the RKE transmitter. A single
horn chirp will sound, indicating that the
TPMS system is ready, and the sensor
matching process can begin.
5. Start with the driver’s side front tire.
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Page 414 of 518

Different Size Tires and Wheels
If you add wheels or tires that are a different size
than your original equipment wheels and tires,
this may affect the way your vehicle performs,
including its braking, ride and handling
characteristics, stability, and resistance to rollover.
Additionally, if your vehicle has electronic
systems such as, anti-lock brakes, traction control,
and electronic stability control, the performance
of these systems can be affected.
{CAUTION:
If you add different sized wheels, your
vehicle may not provide an acceptable
level of performance and safety if tires not
recommended for those wheels are
selected. You may increase the chance
that you will crash and suffer serious
injury. Only use GM speci c wheel and
tire systems developed for your vehicle,
and have them properly installed by a GM
certi ed technician.SeeBuying New Tires on page 411and
Accessories and Modi cations on page 332for
additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
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Tire Chains
{CAUTION:
Do not use tire chains. There is not
enough clearance. Tire chains used on a
vehicle without the proper amount of
clearance can cause damage to the
brakes, suspension, or other vehicle
parts. The area damaged by the tire
chains could cause you to lose control of
your vehicle and you or others may be
injured in a crash. Use another type of
traction device only if its manufacturer
recommends it for use on your vehicle
and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to
your vehicle, drive slowly, re-adjust or
remove the device if it is contacting your
vehicle, and do not spin your wheels.
If you do nd traction devices that will t,
install them on the rear tires.
Lifting Your Vehicle (CTS-V)
{CAUTION:
Lifting a vehicle can cause an injury.
The vehicle can slip off the jack and roll
over you or other people. You and they
could be badly injured. Find a level place
to lift your vehicle. To help prevent the
vehicle from moving:
1. Place the shift lever in REVERSE (R)
and rmly apply the parking brake.
2. Turn off the engine.
To be even more certain the vehicle will
not move, you can put blocks in front of
and behind the wheels. Also seeParking
Your Vehicle (Manual Transmission) on
page 132andParking Brake on page 128
for additional information.
418