A few days ago low tire pressure warning light lit up on my dash. I pulled over, checked the air pressure in all four tires and everything is fine. However, the light remains on. what is the cause of it? Low battery on one of the pressure sensors inside each tire? The car is only 4 years old, it is too soon for the sensor batteries to go bad. Can someone diagnose which sensor is it or do I need to replace all of them? Do new sensors require programming? If yes, can a tire store do it instead of a GM dealer?
Low tire pressure symbol came on
- Thread starter Z71
- Start date
carsNskis
New member
funny timing, just put my summer wheels on (late, I know) and relearned the sensors, but the pressure was 2lbs lower in one tire so I got the flashing tire light... no pressure indication... relearned after filling all to the same pressure and problem solved
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Papasonic
Active member
First, make sure that the tire pressures are at least the PSI listed on the door post label. To verify that the sensors are functioning, use the relearn/trigger tool to attempt to reset each tire's sensor. If the tool is able to set each sensor in the correct sequence, the TPMS sensor batteries are functional. If when attempting to reset a sensor, it fails to respond, that sensor is potentially defective. Dealers and tire shops all have TPMS trigger tools. I purchased one for my own personal use, as not to have to rely on others for this service; I have 5 GM vehicles that I can use this on. It also works on most other makes of vehicles as well.
The tire pressure is at 38 psi in all tires, which is the recommended pressure for these 15 inch tires on the door jamb label.
Can you post some info on the TPMS trigger tool you have?
Papasonic
Active member
I have a ATEQ VT15
https://www.ateq-tpms.com/en-us/products/vt15-tpms-sensor-activation-tool/
I've had mine for about three years, and paid around $60.00. The price is higher now; An internet search shows pricing now around $100.00 from various vendors.
There are numerous brands and models available; some are less expensive, some are much more. At the time I purchased mine, it was the best value for the $ I could find.
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