Jeep's 545RFE automatic transmission had two second gears with different ratios. One of the "second gears" was for shifting ...

In 2003, a program change in the computer caused the 45RFE (4 speed) to become a 5-45RFE (5 speed). One year later, a running change was made to the 45RFE/5-45RFE solenoid assembly (Figure 1). This ...