Corvette V8-5.7L VIN G (1997)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - Non Functional After Programming/No Start
File In Section: 6E Engine Fuel & Emission
Bulletin No.: 87-65-10
Date: March, 1998
Subject:
No Start Condition, Non Functional PCM After Reprogramming (Replace/Reprogram PCM)
Model:
1997-99 Chevrolet Corvette
with 5.7L Engine (VIN G - RPO LS1)
Condition
Some 1997-99 Chevrolet Corvettes may experience a nonfunctional PCM after reprogramming the PCM. This may result in a no start condition.
Cause
When reprogramming the PCM, the on board control modules may attempt to communicate with the PCM across the Class II data link. When this
happens, the reprogramming procedure is interrupted and will result in a non functional PCM. If this happens, a new PCM must be installed and
calibration downloaded.
Correction
When reprogramming any 1997, 1998, or 1999 Chevrolet Corvette, check and record all stored trouble codes. When reprogramming the PCM, the
service method listed must be used to ensure that no other modules in the vehicle attempt to communicate with the PCM during the reprogramming
procedure.
Service Procedure
1.
Check and record all stored trouble codes.
