2003 CHEVROLET IMPALA cruise control

Traction Control System (TCS)
(3800 V6 Engine)
Your vehicle may have a traction control system that
limits wheel spin. This is especially useful in slippery road
conditions. The system operates only if it senses that one
or both of the front wheels are spinning or beginning to
lose traction. When this happens, the system reduces
engine power and may also upshift the transaxle and
apply the front brakes to limit wheel spin.
This light will come on when your traction control
system is limiting wheel spin. See
Traction Active
Message on page 3-41.
You may feel or hear the system working, but this is
normal.
If your vehicle is in cruise control when the traction
control system begins to limit wheel spin, the cruise
control will automatically disengage. When roadconditions allow you to safely use it again, you may
re-engage the cruise control. See ªCruise Controlº
in
Turn Signal/Multifunction Lever on page 3-7.
The traction control system operates in all transaxle
shift lever positions. But the system can upshift
the transaxle only as high as the shift lever position
you've chosen, so you should use the lower gears only
when necessary. See
Automatic Transaxle Operation
on page 2-23.
When the system is on,
this warning light will come
on to let you know if
there's a problem.
See. When this warning light is on, the system will not
limit wheel spin. Adjust your driving accordingly.
To limit wheel spin, especially in slippery road conditions,
you should always leave the traction control system on.
But you can turn the system off if you ever need to. You
should turn the system off if your vehicle ever gets stuck
in sand, mud or snow and rocking the vehicle is required.
See ªRocking Your Vehicle To Get It Outº under
If You
Are Stuck: In Sand, Mud, Ice or Snow on page 4-30. United States
Canada
4-9

Fuses Usage
PCM/BCM/
CLSTRPowertrain Control Module, Body
Control Module, Cluster (Ignition 0)
WSWWindshield Wipers, Windshield
Washer
PCM (CRANK) Powertrain Control Module (Crank)
CIG/AUX Accommodated Device (Accessory)
BCM Body Control Module (Accessory)
SRS Supplemental Restraint System
ABS/PCM Anti-Lock Brake System, Powertrain
Control Module, Brake Switch,
Crank Relay, Canister Vent Solenoid
(Run, Crank)
STOPBrake Lamps, Body Control Module
(Run, Crank)
TURN SIGNAL Turn Signal Flashers
CRUISECruise Control Steering Column
Controls
AC/CRUISEHVAC Temp Door Motors & Module,
Cruise Control Module
A/C FAN HVAC Blower
STR COL Steering Wheel LightingFuses Usage
DR LKBody Control Module, Door Lock
Controls
PWR MIR Power Mirrors
CLSTR/BCMCluster, Body Control Module, Data
Link Connector (Battery)
LH HTD
ST/BCMDriver's Heated Seat, Body Control
Module, Battery Controlled Loads
Circuit
BreakersUsage
RETAINED
ACCESSORY
PWR BRKRPower Window, Sunroof Breaker
Relays Usage
HEADLAMP
RELAYHeadlamp Relay
RETAINED
ACCESSORY
PWR RELAYRetained Accessory Power Relay
5-97

Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Throttle System Inspection
Inspect the 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
and cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-15

Compact Spare Tire........................................5-84
Compass Variance..........................................3-50
Console Shift Lever.........................................2-29
Content Theft-Deferrent....................................2-16
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-43
Coolant.........................................................3-36
Engine Temperature Gage............................3-36
Heater, Engine............................................2-22
Hot Temperature Warning Message................3-42
Cooling System..............................................5-33
Courtesy Lamps.............................................3-17
Cruise Control Light........................................3-39
Cruise Control................................................3-11
Current and Past Model Order Forms................7-12
Customer Assistance Information........................ 7-7
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to
General Motors........................................7-10
Reporting Safety Defects to the
Canadian Government..............................7-10Customer Assistance Information (cont.)
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps/Automatic Headlamp
System......................................................3-15
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-24
Delayed Entry Lighting.....................................3-17
Delayed Exit Lighting.......................................3-18
Delayed Headlamps........................................3-16
Dinghy Towing................................................4-31
Disarming with the Remote Keyless Entry
Transmitter.................................................2-17
Disarming with Your Key..................................2-17
Doing Your Own Service Work........................... 5-4
Dolly Towing..................................................4-32
Dome Lamp...................................................3-18
Door.............................................................3-45
Ajar Warning Message.................................3-45
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks............... 2-9
4

Inspection (cont.)
Throttle System...........................................6-15
Instrument Panel Brightness.............................3-17
Instrument Panel.............................................3-29
Cluster.......................................................3-29
Overview..................................................... 3-4
Interior Lamps................................................3-17
J
Jump Stating..................................................5-49
Key Lock Cylinders Service..............................6-11
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamps...........................................................3-14
Exterior......................................................3-14
Interior.......................................................3-17
Lap Belt........................................................1-24
Lap-Shoulder Belt...................................1-15, 1-26
LATCH System...............................................1-43
Child Restraints...........................................1-43
Securing a Child Restraint Designed
for the LATCH System..............................1-45
Leaving Your Vehicle With the Engine Running . . . 2-29Leaving Your Vehicle.......................................2-10
Light.............................................................3-33
Air Bag Readiness.......................................3-33
Anti-Lock Brake System Warning...................3-35
Brake System Warning.................................3-34
Cruise Control.............................................3-39
Malfunction Indicator....................................3-37
Safety Belt Reminder...................................3-32
TCS Warning Light......................................3-35
Traction Control System (TCS) Warning..........3-35
Loading Your Vehicle.......................................4-32
Lockout Protection..........................................2-10
Locks............................................................. 2-8
Door........................................................... 2-8
Leaving Your Vehicle....................................2-10
Lockout Protection.......................................2-10
Power Door.................................................. 2-9
Programmable Automatic Door Locks............... 2-9
Loss of Control...............................................4-14
Low Brake Fluid Warning Message....................3-47
Low Engine Oil Level Message.........................3-43
Low Fuel Warning Message.............................3-47
Low Oil Pressure Message...............................3-43
Low Tire Message..........................................3-44
Low Washer Fluid Warning Message.................3-46
LT DELAY (Delayed Headlamp Illumination)........2-47
Lumbar........................................................... 1-3
Manual Controls............................................ 1-3
8