Gen III fscm?
Thread Starter
Teching In
Joined: May 2018
Posts: 5
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FSCM is a module that control duty cycle of fuelpump on returnless system.
It gets a signal from ECM. Older system just have pump relay signal.
What I can't figure out is when GM went from regulator style fuel system to pwm controlled fuel system.
Maybe Im the idiot here, but engine is 10 years. Somebody should know this
It gets a signal from ECM. Older system just have pump relay signal.
What I can't figure out is when GM went from regulator style fuel system to pwm controlled fuel system.
Maybe Im the idiot here, but engine is 10 years. Somebody should know this
What did it come out of?
What's it going in?
What's your fuel system?
Are you using a stock ECU or stand alone?
And if you call the dealer you will have to have the VIN.
What's it going in?
What's your fuel system?
Are you using a stock ECU or stand alone?
And if you call the dealer you will have to have the VIN.
