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BCM question
Got a 2003 Eco Tec Olds N which is having a very random and seldom no start condition. The car alway cranks over however the fuel pump enable relay isn't kicking in when the car won't fire. I am strongly leaning towards a faulty BCM here's why:
1. When the car wont start the Interior lights do not function.
2. The retained power accesories malfunctions during a no start condition.
3. When cranking the car when the fuel pump doesn't kick on the SES light flashes while cranking.
My question is to those familiar with the VATS-BCM-ECM loop
Is the system like the Olds W-body which all VATS info is stored in the ECM (regarding the proper resistance) the VATS reader in the ignition switch sends the signal through the BCM and it relays the info to the ECM and sends a Crank signal and a Fuel pump engage signal? If so I think the BCM is having phantom problems. If not I need to keep looking and testing.
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