Malibu V6-191 3.1L VIN M SFI (1997)
Cruise Control Indicator Lamp: Description and Operation
The CRUISE indicator (green) will be illuminated when the Powertrain Control Module (PCM) transmits a Class 2 message to the Body Function
Controller (BFC) indicating the Cruise is engaged. The Body Function Controller (BFC) will then command the CRUISE indicator ON over the
Serial Peripheral Interface (SPI) serial data bus to the Instrument Cluster. In the event of a Class 2 serial data loss the CRUISE indicator will not be
illuminated. In the event of an Serial Peripheral Interface (SPI) data link failure, the CRUISE indicator will not illuminate unless the indicator was
illuminated prior to the Serial Peripheral Interface (SPI) data link failure.
