How to Reset the Tire Sensors on GM Carsby Alibaster Smith
GM's tire pressure monitor employs a sensor inside each tire's valve stem. Reset each tire sensor light when you change tires or your tire pressure gets too low, causing the "TPMS" light to come on. While some GM vehicles have an automatic-reset feature, a manual reset can be done on all makes and models of GM vehicles that use a tire pressure monitor sensor.
Press the "Lock" and "Unlock" buttons on your car's key fob at the same time. The car's horn will chirp twice.
Unscrew the front-left valve stem cap.
Press on the valve stem for a few seconds to let air out of the tire until the horn chirps. Replace the valve stem cap.
Repeat Step 3 for the right-front, right-rear and left-rear tires--in this order. The system will be reset, and the TPMS light will shut off.
- After the reset, check the tire pressure in all four tires to make sure the TPMS system is functioning properly and the tires are inflated to their proper pressure.