GM Driver

I recently purchased a 2007 Chevy Impala with high mileage, and the Tire Pressure monitor system message keeps coming up on the dashboard display reading "check right front tire air pressure" but the pressure is at about 35 lbs when I check it. Sometimes the little yellow light shaped like a low tire on the instrument panel will be shut off but as I'm driving along it will start to flash and then remain lit steady..and then the readout will flash "check right front tire pressure" again.
Does the sensor in that wheel need replacement?
Do the sensors in the wheel rim have batteries in them on these cars?
Should I dismount the wheel and replace it? Is the monitor system messed up needing diagnosis?
Any advice you can provide is greatly appreciated! Thanks.

Regards,

Stephen

Frank3

Hi Stephen Welcome to the forum!

I think the cheapest and easiest way to start with this is to simply make sure the wheel sensors (and their respective locations) are matched/learned to the car. Below I have listed from pages 366 and 367 of the Impala Owner's Manual for your reference. I would try this first, it doesn't cost anything and may get it fixed. If this doesn't do it, you may need a new sensor. I've been told the batteries in them are good for about 5 years, but your results may vary.

1. Set the parking brake.
2. Turn the ignition switch to RUN with the
engine off.
3. Using the DIC, press the vehicle information
button until the LEARN TIRE POSITIONS
message displays.
4. Press the set/reset button to allow the system
to learn the tire positions. The horn will sound
twice to indicate the receiver is ready, and
the TIRE LEARNING ACTIVE message
will display. The TPMS system is ready for
the sensor matching process to begin.
5. Start with the driver’s side front tire.
6. Remove the valve cap from the tire’s valve
stem. Activate the TPMS sensor by increasing
or decreasing the tire’s air pressure for
five seconds, or until a horn chirp sounds.
The horn chirp, which may take up to
30 seconds to sound, confirms that the sensor
identification code has been matched to the
tire/wheel position. To decrease the tire’s
air-pressure use the pointed end of the valve
cap, a pencil-style air pressure gage, or a key.
7. Proceed to the passenger’s side front tire,
and repeat the procedure in Step 6.
8. Proceed to the passenger’s side rear tire,
and repeat the procedure in Step 6.
9. Proceed to the driver’s side rear tire, and
repeat the procedure in Step 6.
10. After hearing the confirming horn chirp for the
driver’s side rear tire, the tire learning process
ends. Turn the ignition switch to OFF.
11. Set all four tires to the recommended air
pressure level as indicated on the Tire
and Loading Information label.
12. Put the valve caps back on the valve stems.