i just bought an 04 rodeo sport with 95,000 miles. The tire pressure light is on/flashing. I checked and filled all 5 tires to 40 psi. I had a tire shop check/test the tire pressure sensors. The tech told me that all the sensors are sending a signal and the batteries are ok. He could not get the sensors and the module to communicate. I had the tire shop put new front tires on and recheck the the tpms. The light has been on intermittently this whole time. Any suggestions? Also what is the module that the tire pressure sensors send their signal to? Thank You