TranSport Computer

Hey, what is the real word "THE COMPUTER" the one that controls the van and its functions, wanting to price one on Ebay, need help finding one THANX ALOT!?!?!?!?!?!?

If it's the computer that manages the engine functions then it's either:
ECU (Engine control Unit)
or
ECM (Engine Control Module)

Here's an example of this unit for sale:
http://cgi.ebay.com/ebaymotors/TRANS-SPORT-SILHOUETTE-LUMINA-APV-3-1-NEW-ECU-91-93_W0QQcmdZViewItemQQhashZitem5d2571967fQQitemZ400 060159615QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAcces sories

If you have a 3.1 its an ECM... If you have a 3.8( 3800 ) its a PCM..