What is the Tire pressure Monitor System on a 2003 Chevrolet impala?

Answer 1

Tire Pressure Monitor System

If your vehicle has the tire pressure monitor system, it

can alert you to a large change in the pressure of

one tire. The system "learns" the pressure at each tire

throughout the operating speed range of your vehicle.

The system normally takes between 45 and 90 minutes

of driving to learn the tire pressures. This time may

be longer depending on your individual driving habits.

Learning need not be accumulated during a single

trip. Once learned, the system will remember the tire

pressures until the system is recalibrated.

After the system has learned tire pressures with

properly inflated tires, the LOW TIRE PRESSURE

message will come on if the pressure in one tire

becomes 12 psi (83 kPa) lower than the other

three tires. The tire pressure monitor system won't alert

you if the pressure in more than one tire is low, if the

system is not properly calibrated, or if the vehicle

is moving faster than 70 mph (110 km/h).

The tire pressure monitor system detects differences in

tire rotation speeds that are caused by changes in tire

pressure. The system can alert you about a low tire-but

it doesn't replace normal tire maintenance. See Tires on

page 5-58.

When the LOW TIRE PRESSURE message comes on,

you should stop as soon as you can and check all

your tires for damage. (If a tire is flat, see If a Tire Goes

Flat on page 5-74.) Also check the tire pressure in all

four tires as soon as you can. See Inflation - Tire

Pressure on page 5-64.

The LOW TIRE PRESSURE message will also be

displayed (while the ignition is on) until you reset

(calibrate) the system.

Don't reset the tire pressure monitor system without first

correcting the cause of the problem and checking

and adjusting the pressure in all four tires. If you reset

the system when the tire pressures are incorrect,

the system will not work properly and may not alert you

when a tire is low.

Any time you adjust a tire's pressure, rotate your tires,

or have one or more tires repaired or replaced, you'll

need to reset (calibrate) the tire pressure monitor

system. You'll also need to reset the system whenever

you buy new tires and whenever the vehicle's battery

has been disconnected.

The tire pressure monitor system can be reset two

ways.

To reset (calibrate) the system using the ignition,

do the following:

1. Turn the ignition position to ON.

2. Pull the exterior lamp control from the ON position

to the OFF position three times.

To reset (calibrate) the system through the radio, do the

following:

1. Turn the ignition to ACC or ON and turn the

radio off.

2. Press and hold the TUNE DISPL button on the

radio for at least five seconds until SETTINGS is

displayed.

3. Press the SEEK PSCAN up or down arrow to scroll

through the main menu.

4. Scroll until TIRE MON appears on the display.

5. Press the 1 PREV or 2 NEXT button to enter the

submenu. RESET will be displayed.

6. Press the TUNE DISPL button to reset. A chime will

be heard to verify the new setting and DONE will

be displayed for one second.

7. Once the monitor has been reset, scroll until EXIT

appears on the display.

8. Press the TUNE DISPL button to exit programming.

A chime will be heard to verify exit.

The system completes the calibration process during

driving.

The system normally takes 15 to 20 minutes of driving

in each of three speed ranges to "learn" tire pressures.

The speed ranges are 15 to 40 mph (25 to 65 km/h),

40 to 65 mph (65 to 105 km/h) and above 65 mph

(105 km/h). When learning is complete, the system will

alert you after two to eight minutes if a tire is 12 psi

(83 kPa) different from the other three tires. Detection

thresholds may be higher and detection times may

be longer on rough roads, curves and at high speeds.

The system is not capable of detection at speeds greater

than 70 mph (110 km/h).