is there a particular program or kit i should buy? i have a 2001 ram 1500 5.2l and need to be able to reset skim and remove skim info from computer. and be able to test all the sensors. right now i have an inexpensive thinkobd 100, and it doesn't seem able to read o2 sensors and yadda

 

Gonna need some pretty high zoot software for that...... A professional-level scanner, pretty much.

 

I harped on this a few times before, many pre-CANbus vehicles have multiple communication buses. In case of the OBDII 2nd gens there is the basic single wire OBDII, SCI and CCD. The OBDII interface is dog slow and only provides the required information. SCI can do much more, not only in terms of data read but also active tests (set RPM, play with the IAC etc.). CCD is for ABS and Airbags etc.
So yes, as HeyYou suggested you need a "shop level" tool. The problem is that the trucks are now 20+ years old and some newer tools don't even support them anymore. So look really closely what features the tool has for older Chryslers. The same is true for PC software. I also own a 4th gen and alfaOBD is the cat's meow for it but it is useless for pre-CANbus vehicles. Try to find an older used shop level tool that is not updated for newer vehicles anymore. OTC Genisys, Snap-on Mt2600 or I think there are some touch screen Snap-on models that have fallen by the wayside as well. Otherwise Autel, Launch and Thinktool are not obscenely expensive like Snap-on or Bosch/OTC.