2008 CHEVROLET IMPALA lock

9. Reinstall the wheel
nuts with the rounded
end of the nuts
toward the wheel.
Tighten each nut by
hand until the wheel is
held against the hub.
10. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
5-85

Headlamp Wiring
The headlamp wiring is protected by fuses in the fuse
block. An electrical overload will cause the lamps to
turn off. If this happens, have your headlamp wiring
checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a fuse. If the
motor overheats due to heavy snow, etc., the wiper
will stop until the motor cools. If the overload is caused
by some electrical problem, have it xed.
Power Windows and Other Power
Options
Circuit breakers in the instrument panel fuse panel
protect the power windows and other power accessories.
When the current load is too heavy, the circuit breaker
opens and closes, protecting the circuit until the
problem is xed.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of res
caused by electrical problems.Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating.
Instrument Panel Fuse Block
The fuse block is located on the passenger side of the
vehicle in the carpet molding. Remove the fuse block
door to access the fuses.
5-99

Fuses Usage
PWR/SEAT Power Seats
PWR/WNDW Power Window
RAP Retained Accessory Power
HTD/SEAT Heated Seats
AUX Auxiliary Outlets
AMP Amplier
S/ROOF Sunroof
XM XM™ Radio
CNSTR Canister
Fuses Usage
DR/LCK Door Locks
PWR/MIR Power Mirrors
AIRBAG Airbags
TRUNK Trunk
TRUNK Trunk Relay
Underhood Fuse Block
The underhood fuse block is located in the engine
compartment. SeeEngine Compartment Overview on
page 5-14for more information on location.
Notice:Spilling liquid on any electrical components
on your vehicle may damage it. Always keep the
covers on any electrical component.
5-100

Fuses Usage
LT PARK Driver’s Side Parking Lamp
RT PARK Passenger’s Side Parking Lamp
FAN 1 Cooling Fan 1
AIRBAG/
DISPLAYAirbag, Display
TRANS Transmission
ECM IGN Engine Control Module, Ignition
RT T/SIG Passenger Side Turn Signal
LT T/SIG Driver Side Turn Signal
DRL 1 Daytime Running Lamps 1
HORN Horn
PWR DROP/
CRANKPower Drop, Crank
STRG WHL Steering Wheel
ECM/TCMEngine Control Module,
Transmission Control Module
RVC SEN Regulated Voltage Control Sensor
RADIO Audio System
FOG LAMPS Fog Lamps
BATT 4 Battery 4
ONSTAR OnStar
®
STRTR Starter
ABS MTR1 Antilock Brake System Motor 1
5-101

Fuses Usage
BATT 3 Battery 3
WSW Windshield Wiper
HTD MIR Heated Mirror
BATT 1 Battery 1
ABS MTR2 Antilock Brake System Motor 2
AIR PUMP Air Pump
BATT 2 Battery 2
INT LIGHTS Interior Lamps
INT LTS/
PNL DIMInterior Lamps, Instrument Panel
Dimmer
A/C CMPRSR Air Conditioning Compressor
AIR SOL AIR (Air Injection Reactor) Solenoid
AUX PWR Auxiliary Power
BCM Body Control Module
CHMSL/
BCK-UPCenter High-Mounted Stoplamp,
Back-up Lamps
DISPLAY Display
ETC/ECMElectronic Throttle Control,
Engine Control Module
INJ 1 Injector 1
EMISSIONS 1 Emissions 1
INJ 2 Injector 2
EMISSIONS 2 Emissions 2Fuses Usage
RT SPOT Right Spot
LT SPOT Left Spot
HDLP MDL Headlamp Module
DRL 2 Daytime Running Lamps 2
FAN 2 Cooling Fan 2
FUEL/PUMP Fuel Pump
WPR Wiper
LT LO BEAM Driver Side Low-Beam
RT LO BEAM Passenger Side Low-Beam
LT HI BEAM Driver Side High-Beam
RT HI BEAM Passenger Side High-Beam
Relay Usage
STRTR Starter
REAR DEFOG Rear Defogger
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
A/C CMPRSR Air Conditioning Compressor
FAN 3 Cooling Fan 3
FUEL/PUMP Fuel Pump
PWR/TRN Powertrain
5-102

Maintenance Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chafing, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect other brake parts, including calipers,
parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing parts or
signs of wear. Inspect power steering lines and hoses
for proper hook-up, binding, leaks, cracks, chafing, etc.
(c)Visually inspect hoses and have them replaced if they
are cracked, swollen, or deteriorated. Inspect all pipes,
fittings, and clamps; replace with genuine parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.(d)Inspect wiper blades for wear, cracking, or
contamination. Clean the windshield and wiper blades,
if contaminated. Replace wiper blades that are worn
or damaged. See Windshield Wiper Blade Replacement
on page 5-52 and Windshield and Wiper Blades on
page 5-95 for more information.
(e)Make sure the safety belt reminder light and safety
belt assemblies are working properly. Look for any
other loose or damaged safety belt system parts. If you
see anything that might keep a safety belt system
from doing its job, have it repaired. Have any torn or
frayed safety belts replaced. Also see Checking
the Restraint Systems on page 1-68.
(f)Lubricate all key lock cylinders. Lubricate all hinges
and latches, including those for the body doors,
hood, secondary latch, pivots, spring anchor, release
pawl, rear compartment, glove box door, console door,
and any folding seat hardware. More frequent
lubrication may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal
better, and not stick or squeak.
(g)If you drive regularly under dusty conditions, the
filter may require replacement more often.
6-7

At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-30.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicle
should start only in PARK (P) or NEUTRAL (N).
If the vehicle starts in any other position,
contact your dealer/retailer for service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-30.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the ignition to ON/RUN,
but do not start the engine. Without applying the
regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), contact your dealer/retailer
for service.
6-10

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK/OFF in each shift lever position.
The ignition should turn to LOCK/OFF only
when the shift lever is in PARK (P).
The ignition key should come out only in
LOCK/OFF.
Contact your dealer/retailer if service is required.
Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake,
set the parking brake.
To check the parking brake’s holding ability:
With the engine running and the transmission
in NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle
is held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Contact your dealer/retailer if service is required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-11