check engine CHEVROLET IMPALA 2006 9.G Service Manual

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-17. Reset oil life system.
SeeEngine Oil Life System on page 5-20.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (k).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 5-22.See footnote (m).•
Rotate tires and check ination pressures and wear. SeeTire Inspection and
Rotation on page 5-64and “Tire Wear Inspection” inAt Least Once a Month
on page 6-9.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as needed.••
Perform any needed additional services. See “Additional Required Services”
in this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transaxle uid level and add uid as needed.•
Replace passenger compartment air lter, if equipped.See footnote (g).•
Inspect throttle system.See footnote (j).•
6-5

(h)Change automatic transaxle uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(i)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-26 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
(j)Check throttle system for interference or binding
and for damaged or missing parts. Replace parts
as needed. Replace any components that have high
effort or excessive wear. Do not lubricate accelerator
or cruise control cables.(k)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(m)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(n)Visually inspect belt for fraying, excessive cracks,
or obvious damage. Replace belt if necessary.
Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability, and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist
you with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
6-8

At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-17for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 5-26for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-54for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-73.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation
on page 5-64.
6-9

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 2-28.
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 GM Goodwrench
®dealer for service.
Automatic Transaxle 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 2-28.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the ignition to 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 GM Goodwrench
®dealer
for service.
6-10

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to
turn the ignition to OFF in each shift lever position.
The ignition should turn to OFF only when the
shift lever is in PARK (P).
The ignition key should come out only in OFF.
Contact your GM Goodwrench
®dealer if service
is required.
Parking Brake and Automatic Transaxle
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 transaxle 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 GM Goodwrench
®dealer 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

Charging System Light....................................3-30
Check
Engine Light...............................................3-34
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-90
Child Restraints
Child Restraint Systems...............................1-38
Infants and Young Children...........................1-34
Lower Anchors and Tethers for Children..........1-43
Older Children.............................................1-32
Securing a Child Restraint in a Rear Seat
Position..................................................1-49
Securing a Child Restraint in the Center
Front Seat Position...................................1-51
Securing a Child Restraint in the Right
Front Seat Position...................................1-52
Where to Put the Restraint...........................1-42
Cigarette Lighter.............................................3-18
Cleaning
Aluminum Wheels........................................5-89
Exterior Lamps/Lenses.................................5-87
Fabric/Carpet..............................................5-85
Finish Care.................................................5-88
Inside of Your Vehicle..................................5-84
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-86Cleaning (cont.)
Leather......................................................5-86
Tires..........................................................5-89
Underbody Maintenance...............................5-90
Washing Your Vehicle...................................5-87
Weatherstrips..............................................5-87
Windshield and Wiper Blades........................5-88
Climate Control System...................................3-19
Air Filter, Passenger Compartment.................3-23
Outlet Adjustment........................................3-22
Collision Damage Repair..................................7-10
Comfort Guides, Rear Safety Belt.....................1-29
Compact Spare Tire........................................5-83
Compass.......................................................3-44
Content Theft-Deterrent....................................2-17
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-43
Coolant
Engine Temperature Gage............................3-33
Engine Temperature Warning Light.................3-32
Heater, Engine............................................2-24
Cooling System..............................................5-31
Courtesy Lamps.............................................3-15
Cruise Control................................................3-10
Cruise Control Light........................................3-38
Cupholder(s)..................................................2-42
3

E
Eight-Way Power Seats..................................... 1-3
Electrical System
Add-On Equipment......................................5-93
Fuses and Circuit Breakers...........................5-94
Headlamp Wiring.........................................5-93
Instrument Panel Fuse Block.........................5-94
Power Windows and Other Power Options......5-94
Underhood Fuse Block.................................5-96
Windshield Wiper Fuses...............................5-93
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-43
Check and Service Engine Soon Light............3-34
Coolant......................................................5-26
Coolant Heater............................................2-24
Coolant Temperature Gage...........................3-33
Coolant Temperature Warning Light................3-32
Engine Compartment Overview......................5-12
Exhaust.....................................................2-32
Oil .............................................................5-17
Oil Life System...........................................5-20
Overheated Protection Operating Mode...........5-31
Overheating................................................5-29
Starting......................................................2-22Entry Lighting.................................................3-16
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-31
Exterior Lamps...............................................3-12
F
Filter
Engine Air Cleaner......................................5-22
Finish Damage...............................................5-90
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-72
Flat Tire, Changing.........................................5-73
Flat Tire, Storing.............................................5-81
Fluid
Automatic Transaxle.....................................5-23
Power Steering...........................................5-38
Windshield Washer......................................5-39
Fog Lamp Light..............................................3-37
Fog Lamps ....................................................3-15
Folding Rear Seat............................................ 1-9
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
5

Fuel (cont.)
E85 (85% Ethanol)........................................ 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage .........................................................3-38
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Fuses
Fuses and Circuit Breakers...........................5-94
Instrument Panel Fuse Block.........................5-94
Underhood Fuse Block.................................5-96
Windshield Wiper.........................................5-93
G
Gage
Engine Coolant Temperature.........................3-33
Fuel..........................................................3-38
Speedometer..............................................3-26
Tachometer.................................................3-26
Garage Door Opener.......................................2-38
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-42
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp
Aiming .......................................................5-47
Headlamp Wiring............................................5-93
Headlamps
Bulb Replacement.......................................5-48
Daytime Running Lamps/Automatic
Headlamp System....................................3-14
Delayed.....................................................3-14
Flash-to-Pass............................................... 3-8
Halogen Bulbs............................................5-48
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-48
High/Low Beam Changer................................ 3-8
Heated Seats................................................... 1-4
Heater...........................................................3-19
Highbeam On Light.........................................3-38
Highway Hypnosis...........................................4-21
Hill and Mountain Roads..................................4-22
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-16
6

O
Odometer......................................................3-26
Off-Road Recovery..........................................4-13
Oil
Engine.......................................................5-17
Pressure Light.............................................3-36
Oil, Engine Oil Life System..............................5-20
Older Children, Restraints................................1-32
Online Owner Center........................................ 7-3
OnStar
®System, see OnStar®Manual...............2-36
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-22
Outlet(s), Accessory Power...............................3-17
Outside
Convex Mirror.............................................2-35
Power Mirrors.............................................2-35
Overheated Engine Protection
Operating Mode..........................................5-31
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Paint, Damage...............................................5-90
Parade Dimming.............................................3-17Park (P)
Shifting Into................................................2-29
Shifting Out of............................................2-31
Parking
Brake........................................................2-28
Over Things That Burn.................................2-32
Passenger Airbag Status Indicator.....................3-28
Passenger Compartment Air Filter.....................3-23
Passenger Sensing System..............................1-63
Passing.........................................................4-13
PASS-Key
®III+..............................................2-18
PASS-Key®III+ Operation................................2-19
Power
Accessory Outlet(s)......................................3-17
Door Locks.................................................2-11
Eight-Way Seats........................................... 1-3
Electrical System.........................................5-94
Retained Accessory (RAP)............................2-22
Six-Way Seats.............................................. 1-2
Steering Fluid.............................................5-38
Windows....................................................2-16
Pressure Cap.................................................5-28
Pretensioners, Safety Belt................................1-31
Programmable Automatic Door Unlock...............2-11
Q
Questions and Answers About Safety Belts.........1-16
9

R
Radios..........................................................3-58
Care of Your CD Player...............................3-85
Care of Your CDs ........................................3-85
Radio with CD....................................3-62, 3-67
Setting the Time..........................................3-60
Theft-Deterrent............................................3-83
Understanding Reception..............................3-84
Reading Lamps..............................................3-17
Rear Door Security Locks................................2-12
Rear Safety Belt Comfort Guides......................1-29
Rear Seat Armrest..........................................2-43
Rear Seat Passengers, Safety Belts..................1-26
Rear Storage Area..........................................2-43
Rearview Mirror, Automatic Dimming with
OnStar
®.....................................................2-34
Rearview Mirror with OnStar®...........................2-34
Rearview Mirrors.............................................2-34
Reclining Seatbacks.......................................... 1-5
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-34
Remote Keyless Entry (RKE) System.................. 2-3
Remote Keyless Entry (RKE) System,
Operation..................................................... 2-4Removing the Flat Tire and Installing
the Spare Tire.............................................5-76
Removing the Spare Tire and Tools...................5-74
Replacement Bulbs.........................................5-52
Reporting Safety Defects
Canadian Government..................................7-14
General Motors...........................................7-14
United States Government............................7-14
Restraint System Check
Checking the Restraint Systems....................1-69
Replacing Restraint System Parts After a
Crash.....................................................1-70
Retained Accessory Power (RAP)......................2-22
Right Front Passenger Position, Safety Belts......1-24
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-29
Running the Engine While Parked.....................2-33
S
Safety Belt
Passenger Reminder Light............................3-26
Pretensioners..............................................1-31
Reminder Light............................................3-26
10