Dana Corporation's Commercial Vehicle Systems group has enhanced its popular Dana Spicer® Tire Pressure Control System (TPCS) with a new integrated Driver Display Module (DDM) that, in conjunction with new dash-mounted rocker switches, simplifies the selection of tire pressures to maximize vehicle mobility under varying load and terrain conditions. The Dana Spicer Tire Pressure Control System is the only system with air seals built into the axles that eliminate the need for external air lines for reliable, trouble-free performance.