P1366 Code Description GMC
The diagnostic code P1366 for GMC vehicles indicates a problem with the ignition control cylinder 6 that does not switch after activation. This means that the engine control module (ECM) has detected an issue with the ignition system of cylinder 6, which can lead to misfires, poor engine performance, and potential damage if not resolved.
Common Causes of GMC P1366 Syndrome
NOTE: The listed causes may not be a complete list of all potential problems, and there may be other causes.
- Faulty ignition control module
- Faulty ignition coil pack
- Wiring or connection issues in the ignition system
- Vacuum leaks affecting cylinder 6
- ECM software malfunction
Symptoms of P1366 GMC
- Rough idle or engine misfires
- Decreased fuel efficiency
- Loss of engine power
- Check Engine light is on
- Engine hesitation or stalling
How to Fix GMC Code P1366
- Use a diagnostic tool to diagnose the specific issue with ignition control cylinder 6.
- Inspect the ignition control module and coil pack for any signs of damage or wear.
- Check the wiring and connections related to cylinder 6 for any faults or breaks.
- Replace the faulty ignition control module or coil pack if necessary.
- Clear the error code from the ECM and test the vehicle to ensure the problem is resolved.