The inability to communicate with a Steering Gear can potentially be attributed to a few different things. “Power” Check the voltage going to the gear and make sure it is between 11-16 volts. Also ensure that the ground wire is properly connected and you have no blown fuses as well. “Wiring” Check to make sure that the communication wires are sending a signal to the Steering Gear. The gear must have power and communication to operate. “Flashing Issue” If there were issues during the flashing process of a replacement gear, this can result in the gear being stuck in a boot loader mode and the gear will not function.