GM 2-Pin Fuel Injector Connector – OEM 15426723 / 15397337 | Chevrolet Buick GMC
Direct OEM-specification replacement for the GM 2-pin fuel injector harness connector. Cross-references OEM part numbers 15426723 and 15397337. Used across Chevrolet, Buick, GMC, and Cadillac petrol engine platforms. Available bare or with 15cm pre-wired leads.
| OEM Number | Application |
|---|---|
| 15426723 | GM fuel injector connector — primary |
| 15397337 | GM fuel injector connector — alternate |
| Pin | Function | Failure Symptom if Corroded |
|---|---|---|
| 1 | +12V power supply to injector solenoid | P0201–P0208 — injector circuit open, cylinder lean |
| 2 | ECU-controlled ground (PWM pulse) | Cylinder misfire, P0300–P0308 |
| Attribute | Detail |
|---|---|
| Pin Count | 2-Pin |
| OEM Part Numbers | 15426723 / 15397337 |
| Housing Material | High-temp nylon (PA66) |
| Wire Option | Bare connector / 15cm pre-wired leads |
| Application | Fuel injector harness |
| Compatible Brands | Chevrolet, Buick, GMC, Cadillac |
| Code | Description |
|---|---|
| P0201–P0208 | Injector circuit malfunction — cylinder 1–8 |
| P0300–P0308 | Random / cylinder-specific misfire |
GM fuel injector connectors on LS, LT, and Ecotec engines are mounted in the engine valley, exposed to sustained heat and oil vapour from the PCV system. The 2-pin connector’s locking tab fractures from thermal cycling, allowing the connector to partially disengage. A partially disconnected injector connector causes the ECU to log a cylinder-specific injector circuit fault and run that cylinder lean, producing a misfire. On LS-family V8 engines, a single corroded injector connector is frequently misdiagnosed as a failed injector before the connector is inspected.
Q: My GM has P0204 (cylinder 4 injector) but the injector tests OK — what’s wrong?
A: P0201–P0208 are circuit fault codes. A corroded or loose 2-pin connector produces the same code as a failed injector. Inspect the connector at the affected cylinder before replacing the injector.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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2 Pin Connectors
