1997 Chevy Truck reprograming

For GM applications, you need a Tech 2 scan tool or Vetronix Mastertech.

Reflashing PCMs requires three things: a scan tool or J2534 pass-through device that is flash capable, a Windows 98 or higher PC with a modem and Internet access for downloading the flash software from the vehicle manufacturer's website (Click Here for a list of OEM Service Websites & Access Fees), and a subscription to the manufacturer's database so you can access the software or get the software updates on CDs. Other items that are needed include a cable to connect the PC to the scan tool or J2534 pass-through device, and a cable to connect the scan tool or J2534 pass-through device to the OBD II connector on the vehicle.