I have a 1998 Chevrolet Corvette (C5), which after changing out the battery, has initiated theftlock. I was not the one who set the code to unlock it, so that poses a problem. On other forums, I noticed you could hold presets 2 & 3 to retrieve a 6 digit code, then call an automated machine to use this combo to retrieve a bypass code to unlock it. Only problem is, the numbers never pop up after holding 2 & 3..

U can provide VIN number of ur corvette to ur dealer to get the issue fixed.

TRY THIS TRICK .THE PASSIVE SWITCH IN OFF POSITION. STAND 5 FT OF THE VECHICLE .PRESS AND HOLD REMOTE TRANSMITTER LOCK AND UNLOCK BUTTONS FOR 7 SECONDS.HORN CHIRPS TO CONFIRM SYNCHRONIZATION. NOW SWITCH IGNITION ON. SWITCH RADIO OFF. PRESS THE RESET BUTTON ON THE DRIVER INFORMATION CENTER DIC IN ORDER TO CLEAR ANY INSTRUMENT PANEL CLUSTER IPC WARNING MESSAGES. PRESS AND RELEASE THE OPTIONS BUTTON ON THE DRIVER INFORMATION CENTER DIC TO SCROLL THROUGH OPTIONS UNTIL THE INSTRUMENT PANEL CLUSTER IPC DISPLAY IS BLANK.PRESS AND HOLD THE RESET BUTTONS FOR 3 SECONDS. PRESS THE OPTIONS BUTTON UNTIL FOB TRAINING MESSAGE IS DISPLAYED.PRESS THE RESET BUTTON IN ORDER TO START THE PROGRAMMING MODE.THE MESSAGE HOLD LK +.UNLK 1ST FOB WILL BE DISPLAYED. IF THIS DONT WORK DEALERSHIP FIX.THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO RESET THEFT SECURITY SYSTEM.