GM #13507129
This Flexfuel sensor works with MaxxECU for example.
Frequency output, ethanol content and temperature along one cable to the digital input of the ECU.
Also requires 12V and Ground wires. Order connectors (electricity and hose) separately! Suitable AN-fittings are also available (AN6 / AN8).
More information: http://foreinnovations.blogspot.com/2014/04/restrictive-flex-fuel-sensor.html?m=1
Pinout:
1: 12V
2: GND
3: Signal (to digital input)