GMC P1372 Code Description
The GMC P1372 code refers to a crankshaft position sensor AB correlation condition. This means there is a discrepancy between the signals received from the two crankshaft position sensors in the vehicle’s engine. The crankshaft position sensors are responsible for detecting the position of the crankshaft relative to the engine cylinders. This information is crucial for the Engine Control Module (ECM) to determine ignition timing and fuel injection timing.
Common Causes of GMC P1372
NOTE: The listed causes may not be a complete list of all potential issues, and there may be other causes.
- Faulty crankshaft position sensor
- Wiring issues (such as damaged or loose connections)
- ECM malfunction
- Timing chain or belt problems
- Engine mechanical issues
Symptoms of GMC P1372
- Engine misfires
- Rough idle
- Poor acceleration
- Stalling
- Difficulty starting the engine
How to Fix GMC P1372 Code
- Diagnose the problem: Use a diagnostic scanner to retrieve the error code and perform a thorough inspection of the crankshaft position sensors, wiring, and ECM.
- Replace the faulty sensor: If the crankshaft position sensor is found to be defective, replace it with a new OEM-quality sensor.
- Repair wiring issues: Correct any damaged or loose wiring connections that may be causing the correlation problem.
- Check and adjust timing: Ensure the timing chain or belt is properly aligned and adjust if necessary.
- Clear the error code: After completing the repair, clear the error code from the ECM and test the vehicle to ensure the issue has been resolved.