ESC MODULE WHICH IS CALLED THE ELECTRONIC SPARK CONTROL MODULE.IS THE KNOCK SENSOR MODULE SEND 8 TO 10 VOLTS TO THE ECM INDICATING THERE IS NO DETONATION.KNOCK SENSOR MODULE LOCATED ON THE LOW SIDE OF THE ENGINE BLOCK.ESC MODULE ANOTHER NAME FOR KNOCK SENSOR.
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SOURCE: i need to know where my spark control module aka (esc) is at on my 95 chevy s10 blazer 4.3 vortec
metal box mounted in front of coil.
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