TunerCats has options to flash the 94-95 LT1 computer:

Purchase the OBD1 RT Tuner program $99.95 and purchase LT1 $EE definition file $19.95. ALDL Cable not Included.

Purchase the LT1 WinFlash software $19.95, after the free 30 trial expires. ALDL Cable not Included.

Purchase the OBD1 LT1 Tuning Kit $159.95. ALDL Cable Included

dave w