P0306 Diagnostic Trouble Code Discussion for November 2025
Cylinder 6 Misfire Detected
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| Help Request | Posted | |
| 2004 Pontiac Montana 3.4L Misfire VIN: 1GMDX13E84 P0306: testing and results. This one will misfire at idle, occasionally come out of it but goes down the road normally. We have done compression and leak down for those affected cylinders all around 110-135, also did running compression comparing #s same all readings similar to other... |
November 05, 2025 |
