2007 CHEVROLET IMPALA Owners Manual

To replace one of these bulbs:
1. Open the hood. SeeHood Release on
page 305for more information.
2. Remove the screw from the headlamp
assembly.3. Remove the headlamp plastic retainer by
pulling it up.
4. Pull the headlamp assembly away from the
vehicle and remove the electrical connector.
5. Remove the round dust caps to gain access
to the bulbs.
6. Turn the old bulb counterclockwise and
remove it from the retaining ring by pulling
it away from the headlamp.
7. Remove the electrical connector from the bulb
by raising the lock tab and pulling the
connector away from the bulb’s base.
345

8. Install the electrical connector to the bulb.
9. Install the new bulb by inserting the smallest
tab on the bulb base into the matching notch
in the retaining ring. Turn the bulb a
quarter-turn clockwise until it stops.
10. Reverse Steps 1 through 5 to reinstall the
headlamp assembly.
When you reinstall the headlamp assembly,
make sure to line up the pin in the headlamp
assembly with the slot in the vehicle.Taillamps, Turn Signal, Sidemarker,
Stoplamps and Back-up Lamps
A. Rear Sidemarker Lamp
B. Back-up Lamp
C. Stoplamp/Taillamp/Turn Signal
346

To replace one of these bulbs:
1. Open the trunk. SeeTrunk on page 102for
more information.
2. Remove the convenience net, if your vehicle
has one. Unhook the net from the upper
wing nut.
3. Remove the upper (convenience net)
wing nut.
4. Pull the carpet away from the rear of the
vehicle.5. Remove the two hex nuts.
6. Pull out the taillamp assembly and disconnect
the wiring harness.
347

7. Turn the bulb socket counterclockwise to
remove it.
8. Install a new bulb.
9. Turn the bulb socket clockwise to reinstall it.
10. Reverse Steps 1 through 6 to reinstall the
taillamp assembly.
When reinstalling the taillamp assembly, make
sure that you line up the four posts on the
assembly with the slots in the vehicle.License Plate Lamp
To replace one of these bulbs:
1. Turn the lamp assembly counterclockwise and
pull the lamp assembly out of the connector.
2. Pull the old bulb from the lamp assembly,
keeping the bulb straight as you pull it out.
3. Install the new bulb.
4. Reverse Steps 1 through 3 to reinstall the
license plate lamp.
348

Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up 921
Front Parking/Turn Signal 3157NAK
License Plate Lamp 194
Headlamps
High-Beam H9
Low-Beam H11
Sidemarker 194
Stoplamp, Taillamp, and
Turn Signal3057
For replacement bulbs not listed here, contact
your dealer/retailer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear or cracking. SeeScheduled Maintenance
on page 408for more information on wiper blade
inspection.Replacement blades come in different types and
are removed in different ways. Here’s how to
remove the wiper blade:
1. Pull the windshield wiper arm connector away
from the windshield.
2. While holding the wiper arm, pull the clip up
from the blade connecting point, and pull the
blade assembly down toward the windshield
to remove it from the wiper arm.
3. Install the new wiper blade onto the wiper arm
and snap the clip down into place.
349

To remove and replace the wiper blade element
do the following:
1. The wiper blade element has two notches at
one end which are engaged by the bottom
claw set of the wiper blade. At the notched
end of the wiper blade, pull the wiper
blade element from the wiper blade assembly.
2. To replace the element, start at the heel end
of the wiper blade, which is the end nearest to
the base of the wiper arm, and slide the
wiper blade element, notched end last, into
the wiper blade claw sets.
3. To engage the last claw into the notched end
of the wiper blade element, squeeze the wiper
blade element at the notched area, and
push the wiper blade element so the claw ts
into the notch.
4. Be sure the two wiper blade element notches
are engaged by the last claw set, and that all
the other claws are properly engaged in the
slots of the wiper blade element on both sides.A. Correct Installation
B. Incorrect Installation
For the proper type and size windshield wiper
blades, seeNormal Maintenance Replacement
Parts on page 419.
350

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.
{CAUTION:
Poorly maintained and improperly used
tires are dangerous.
Overloading your vehicle’s tires can
cause overheating as a result of too
much friction. You could have an
air-out and a serious accident. See
Loading Your Vehicle on page 277.
CAUTION: (Continued)
CAUTION: (Continued)

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 vehicle’s tires are cold. See
Inflation - Tire Pressure on page 359.
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 the tire’s tread is badly worn, or if
your vehicle’s tires have been
damaged, replace them.
351

Tire Sidewall Labeling
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.
Passenger (P-Metric) Tire Example
352