where is the PCM located on a 2001 Dodge Ram Van 2500 series?

The power train control module is located next to the wiper motor but proper tests need to be done before determining the PCM is the fault.There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online But to test properly you would probably need to test with a scan tool that can read live sensor data (inputs and outputs). There are companies that can test and repair the PCM. http://www.siaelec.com/ they just tested and repaired a Dodge PCM for me.