TerdFurgeson

I have an 08 TrailBlazer LT and when I was driving today the Low Tire Pressure light came on. It said my left rear tire only have 21 psi, so I stopped at the next gas station to check and refill it. The tire was full, as were the rest of them. My question is, is there a way to reset the sensor? I had a 2000 Impala LS and I could reset the sensors by using the settings in the radio. Any help would be greatly appreciated.

MDTAHOE

TPMS Sensor Matching Process

Each TPMS sensor has a unique identification code. Any time you rotate your vehicle's tires or replace one or more of the TPMS sensors, the identification codes will need to be matched to the new tire/wheel position. The sensors are matched to the tire/wheel positions in the following order: driver side front tire, passenger side front tire, passenger side rear tire, and driver side rear tire using a TPMS diagnostic tool. See your dealer/retailer for service.

The TPMS sensors can also be matched to each tire/wheel position by increasing or decreasing the tire's air pressure. If increasing the tire's air pressure, do not exceed the maximum inflation pressure indicated on the tire's sidewall.

To decrease air-pressure out of a tire you can use the pointed end of the valve cap, a pencil-style air pressure gage, or a key.

You have two minutes to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer than two minutes, to match the first tire and wheel, or more than five minutes to match all four tire and wheel positions the matching process stops and you need to start over.

The TPMS sensor matching process is outlined below:



Set the parking brake.
Turn the ignition switch to ON/RUN with the engine off.
Turn the headlamp control from off to parking lamps four times within three seconds. A double horn chirp will sound and the TPMS low tire warning light will begin to flash. The double horn chirp and flashing TPMS warning light indicate that the TPMS matching process has started. The TPMS warning light should continue flashing throughout the matching procedure.
Start with the driver side front tire.
Remove the valve cap from the valve cap stem. Activate the TPMS sensor by increasing or decreasing the tire's air pressure for 10 seconds, then stop and listen for a single horn chirp. The single horn chirp should sound within 15 seconds, confirming that the sensor identification code has been matched to this tire and wheel position. If you do not hear the confirming single horn chirp, you will need to start over with step number one.
Proceed to the passenger side front tire, and repeat the procedure in Step 5.
Proceed to the passenger side rear tire, and repeat the procedure in Step 5.
Proceed to the driver side rear tire, and repeat the procedure in Step 5.
After hearing the confirming horn chirp for the driver's side rear tire, check to see if the TPMS warning light is still flashing. If yes, turn the ignition switch to LOCK/OFF to exit the sensor matching process. If the TPMS warning light is not flashing, the five minute time limit has passed and you will need to start the process over beginning with Step 1.
Set all four tires to the recommended air pressure level as indicated on the Tire and Loading Information label.
Put the valve caps back on the valve stems

TerdFurgeson

Thanks for the tip, but when I started it this morning to got to work everything was fine. no light, no message, nothing. I don't get it.

vipergg

this can be triggered by any kind of radio interference that happens to be close to what the tire pressure sensors use. I know from experience that a device whether a laptop or an ipod trying to access an 802.11bg connection will set off the light . Seeing that it went away then thats what you probably experienced.

kjrff23

I know I'm late to the party but if anyone else has this issue I have a 2008 as well and have had it happen a few times. Usually my sensors tell me its low and the reading is in the mid to high 30's. I have had the reading say its 0 with a full tire as well. I had the dealership check it out and they couldn't find anything wrong and chalked it up to interference. I notice it was happening in the same areas near certain businesses and also twice passing standing police cars so some RFI is probably the culprit.

Chevrolet Customer Service

kjrff23,

I know it can be frustrating when the concern can not be duplicated at the dealership. I would like to look into your concern further. Can you please private message me your name, VIN, mileage, address, phone number, and the name of the GM Dealership your are working with? I look forward to hearing from you.

Erica Tiffany
Chevrolet Customer Service

wp300

I also have a issue on my truck. I have replaced the tire senor 3 times on my right front tire and after a day the service tire monitor light comes on and it is reading nothing from the right front tire. What else could the problem be?