Various General Motors models with 4 digit PIN codes are supported by ICC.
PIN code for immobilizer can be calculated by dump of EEPROM from Immo Box, BCM, UCH, ECU, REC, Radio or Dash. For Chevrolet 1999-2010 models made in Latin America ICC can calculate PIN code by VIN.
In addition ICC can calculate KEY code by VIN for Chevrolet 2000-2009 models made in Mexico, Argentina, Brazil. For all other GM models ICC can calculate KEY code by dump.
For Opel models based on Renault platforms - set Renault as brand.