Transmission Control Module Errors

It is in the left hand front of the engine Compartment. On your vehicle the Power Train Control Module does at least 2 jobs, those being the control of the Engine and the Transmission. I would say that you should scan the data stream of the Control Module and retrieve any and all codes from all the Modules in your Pacifica which has several. There are hundreds of coded problems that can occur in your vehicle and the Speed Sensor is only 1 of them, so be sure to have the problem properly Diagnosed before you buy any more parts and install them. here is a list of shops http://repairpal.com/chrysler-repair-in-spring-hill-tennessee