Yes, and no. There is an EEPROM based ecm used in the 93 and some 94 Cavaliers with 2.2 and manual. Code is simple and not part of the EEPROM. There is also an OBDII flash ecm used in Daewoo cars (it's a Delco that mounts inside the car) but I don't know if its been cracked yet. There's also the 97+ Cavalier / Sunfire 2.4 pcm family which (I believe) is supported by HPTuners.