This is the GM-type mating connector kit for the GM/Continental flex-fuel (“ethanol content”) composition sensor — GM part numbers 13577429, 13577379, and 13577394 — used to blend ignition, injection and boost maps between petrol and E85 on standalone ECUs (Link, Emtron, MoTeC, Haltech, ECUMaster, MaxxECU, AEM). The connector is the Delphi/Aptiv GT150 series: a 3-way sealed housing with a push-to-seat secondary lock (TPA). The kit ships as a bare connector set — housing, three crimp terminals, and wire seals — for building your own harness lead; it is not a pre-wired pigtail.
Specifications
| Property | Value |
|---|---|
| Connector family | Delphi/Aptiv GT150, 3-way sealed |
| Positions | 3 |
| Terminal wire range | 22–20 AWG |
| Seal type | Individual wire seal per cavity |
| Secondary lock | TPA (terminal position assurance) |
| Contents | Housing + 3 female crimp terminals + 3 wire seals |
| Termination | Crimp (crimp tool required, not included) |
| Mates with | GM/Continental flex-fuel sensor 13577429, 13577379, 13577394 |
Compatibility
| GM/Continental part number | Sensor body | Notes |
|---|---|---|
| 13577429 | Smallest, short ports | Ethanol Content Flex Fuel Sensor — the sensor XTRA stocks |
| 13577379 | Mid-size, 3 mounting holes | Same GT150 connector and pinout |
| 13577394 | Large, longer port pipes | Same GT150 connector and pinout |
All three GM/Continental flex-fuel sensor bodies share identical electronics and the same GT150 3-pin housing, so one connector kit fits any of the three.
Pinout
| Pin | Signal | Notes |
|---|---|---|
| A | 12 V switched ignition supply | |
| B | Ground (signal ground, not chassis 0 V) | |
| C | Signal output | Open-collector — wire to the ECU’s digital/frequency input with pull-up enabled |
FAQ
Is this the sensor or just the connector?
This is the connector only — the mating GT150 3-way plug that wires to the GM/Continental flex-fuel sensor. The sensor itself is sold separately.
What GM part numbers does this fit?
All three GM/Continental flex-fuel sensor bodies — 13577429, 13577379, and 13577394. All three use the same GT150 3-pin housing and pinout.
What wire gauge do the terminals take?
The crimp terminals are rated 22–20 AWG. A crimp tool suitable for GT150 terminals is required and not included.
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