Learn when TPMS sensor replacement is needed, how sensor modes work, and tips for troubleshooting signal issues in the shop.

But, the Dorman TPMS (PN RNB-974-009) come with metal valve stems and are a fraction of the cost of the GM sensors at under $31. So I figured we’d give them a shot in the name of science.

Unlike other parts on your car, Tire Pressure Monitoring System (TPMS) sensors have their own battery, which means they eventually die. How much is a new one?