GMC P1363 Code Description
The GMC P1363 code refers to the ignition control cylinder 3 not toggling after activation. This means there is a problem with the ignition control system specifically related to engine cylinder 3. The Engine Control Module (ECM) sends a signal to activate ignition control cylinder 3 but does not receive the expected response or feedback, indicating a malfunction in the ignition system. This can directly impact vehicle performance, as the ignition control system is responsible for the proper timing of spark plug ignition in each cylinder, which is essential for the engine to run correctly and efficiently.
Common GMC P1363 Causes
NOTE: The listed causes may not be a complete list of all potential problems, and there may be other causes.
- Faulty ignition coil for cylinder 3
- Damaged spark plug in cylinder 3
- Wiring or connection issues in the ignition system specific to cylinder 3
- ECM malfunction or programming error
- Mechanical problems affecting cylinder 3, such as low compression or valve issues
GMC P1363 Symptoms
- Rough idle or misfires
- Reduced engine performance
- Difficulty starting the engine
- Decreased fuel efficiency
- Illuminated check engine light
How to Fix GMC P1363 Code
- Diagnose the specific cause of the issue by checking the ignition coil, spark plug, wiring, and ECM related to cylinder 3.
- Replace the faulty ignition coil or spark plug if it is the cause.
- Repair any damaged wiring or connections in cylinder 3’s ignition system.
- Update or reprogram the ECM if necessary to correct programming errors.
- Perform a compression test on cylinder 3 to check for any mechanical issues affecting its performance.