The P1482 code on your 2020 Chevrolet Traverse indicates a performance issue with the fuel level sensor circuit. This GM-specific code affects your Traverse's 3.6L V6 engine system's ability to accurately monitor fuel level, potentially causing erratic fuel gauge readings and affecting the distance-to-empty calculation.
Understanding P1482 on Traverse
The fuel level sensor is located in the fuel tank as part of the fuel pump module assembly. It uses a variable resistor attached to a float to measure fuel level. Code P1482 sets when the PCM detects erratic, stuck, or out-of-range signals from the fuel level sensor circuit, indicating the readings don't correspond to expected patterns during normal vehicle operation.
Common Symptoms
- Check engine light on
- Erratic or stuck fuel gauge readings
- Fuel gauge reading full when tank is empty or vice versa
- Distance-to-empty display inaccurate
- Low fuel warning activating incorrectly
- Fuel gauge needle bouncing
Primary Causes
- Faulty fuel level sensor
- Worn float or arm on fuel sender
- Corroded connector at fuel tank
- Damaged wiring between sensor and PCM
- Contaminated fuel affecting float operation
- Fuel tank deformation affecting float movement
- Poor ground connection
Diagnostic Procedure for 2020 Traverse
Start by monitoring fuel level sensor voltage with a scan tool. Normal operation shows gradual voltage changes as fuel is consumed. Stuck or erratic readings indicate sensor failure. If possible, access the fuel tank connector and check for corrosion. Test wiring continuity from connector to PCM. Moving the vehicle on an incline should show corresponding fuel level changes if sensor is working. Check for fuel contamination that may affect float operation.
Repair Solutions
Clean corroded connectors and apply dielectric grease to prevent future corrosion. Repair any damaged wiring between the fuel tank and PCM. If the fuel level sensor is faulty, replacement typically requires removing the fuel pump module assembly from the tank. Some vehicles allow sensor replacement separately while others require complete module replacement. After replacement, clear codes and verify proper fuel gauge operation across various fill levels.