ECM - CALPAK Installation
Bulletin 84-6J-3Date Nov. '84
Ref. No. 85-049-6J
SUBJECT: CALPAK INSTALLATION
MODELS AFFECTED: 1984 SKYHAWK - 1.8L TURBO
When Codes 51 or 55 are indicated and fuel delivery to the engine is interrupted, the ECM should be checked for a missing Calpak. Code 52 will NOT register if the Calpak is missing. If the Calpak is in place, normal diagnostic should be used to check for a malfunctioning PROM or ECM.
When servicing the ECM, both the Calpak and PROM must be transferred to the new ECM.