INFO- SYNCH THE REMOTE FUNCTION ACTUATION. Chevrolet Corvette 1997

SUBJECT: INFORMATION - SYNCHRONIZING THE REMOTE FUNCTION ACTUATION (RFA) TRANSMITTER

MODELS: 1997 CHEVROLET CORVETTE

THE REMOTE FUNCTION ACTUATION (RFA) SYSTEM THAT THE CHEVROLET CORVETTE BEGAN USING IN 1997 INCORPORATES "ROLLING CODE" TECHNOLOGY. "ROLLING CODE" OFFERS A NEW LEVEL OF SECURITY FOR THE RFA SYSTEM THAT WAS NOT AVAILABLE IN PRE-1997 VEHICLES. THIS NEW LEVEL OF SECURITY PREVENTS ANYONE FROM RECORDING THE MESSAGE BEING SENT FROM THE TRANSMITTER TO THE RECEIVER AND PLAYING IT BACK AGAIN TO GAIN ENTRY TO A VEHICLE.

"ROLLING CODE" REFERS TO THE WAY THE INFORMATION IS BEING SENT OUT BY THE RFA TRANSMITTER AND ACCEPTED BY THE RECEIVER. THE TRANSMITTED SIGNAL IS SCRAMBLED IN A DIFFERENT ORDER UPON RFA TRANSMISSION. THE TRANSMITTER AND RECEIVER KEEP TRACK OF THE APPROPRIATE ORDER OF THE TRANSMITTED INFORMATION. WHEN THE SIGNAL BEING SENT BY THE TRANSMITTER IS NOT IN THE ORDER THAT THE RECEIVER IS EXPECTING, THE TRANSMISSION IS DEEMED INVALID AND NO OPERATION IS PERFORMED. THIS OCCURS WHEN THE RECEIVER AND TRANSMITTER ARE "OUT OF SYNCHRONIZATION".

WHEN THE TRANSMITTER(S) ARE OUT OF SYNCHRONIZATION, LOOK FOR THE FOLLOWING SYMPTOMS:

O NONE OF THE BUTTONS WILL APPEAR TO ACTIVATE ANY FUNCTIONS ON THE VEHICLE.

CAUSES FOR LOSS OF "SYNCHRONIZATION" -

O DISCONNECTING THE VEHICLE BATTERY O REPLACING THE TRANSMITTER BATTERY O PERFORMING THE RESYNCHRONIZATION PROCEDURE OUT OF RANGE OF THE VEHICLE O TRANSMITTER OUT OF RANGE OF THE VEHICLE FOR EXTENDED PERIODS OF TIME (MORE THAN 30 DAYS).

TO RESYNCHRONIZE A TRANSMITTER, REFER TO THE SERVICE OR OWNERS MANUAL OR PERFORM THE FOLLOWING PROCEDURE:

O PRESS AND HOLD THE LOCK AND UNLOCK BUTTONS WHILE STANDING NEXT TO VEHICLE O CONTINUE TO HOLD BOTH BUTTONS FOR APPROXIMATELY 7 SECONDS O WHEN RESYNCHRONIZATION IS ACHIEVED, THE VEHICLE HORN WILL "CHIRP" O THE TRANSMITTER WILL NOW FUNCTION NORMALLY

THE CUSTOMER SHOULD BE MADE AWARE OF THIS CONDITION AND DIRECTED TO REVIEW THE RESYNCHRONIZATION PROCEDURE IN THE OWNERS MANUAL.

WARRANTY INFORMATION:

THIS PROCEDURE SHOULD NOT BE CHARGED TO WARRANTY.

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GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.