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Installing your Gen V LT and keep seeing questions on wether you have a 4-pin or 3-pin harness? This is in regard to the fuel rail pressure sensor on the back of your engine. GM made changes around 2016 from the 4-pin (analog) to a 3-pin sensor (digital). This is important as the controllers are different and the harness that goes to those sensors is pinned differently!
Chevrolet Performance LT4 Crate Engines:
Dry Sump 4-pin: sdparts.com/i-...
Dry Sump 3-pin: sdparts.com/i-...
Wet Sump 3-pin: sdparts.com/i-...
4-pin sensor: 12673824 - sdparts.com/i-...
4-pin harness: 12623131 - sdparts.com/i-...
3-pin sensor: 12684286 - sdparts.com/i-...
3-pin harness: 12707876 - sdparts.com/i-...
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