Chevrolet Sonic unstable gas gauge that sticks and misreads fuel level on Chevrolet Sonic

Some Chevrolet Sonic owners report experiencing issues with an unstable gas gauge that sticks and misreads the fuel level. These problems can stem from overfilling the fuel tank, as indicated by a Technical Service Bulletin that highlights gauge inaccuracies when the tank is overfilled. Additionally, some owners face intermittent issues with the fuel gauge, making it difficult to identify the problem, and they are advised to seek inspection at a certified GM dealership for potential resolution. Reports also indicate specific cases where the gas gauge in models like the 2012 Chevy Sonic 1.4 turbo has completely stopped displaying fuel levels, necessitating component replacements such as the fuel sender. User experiences shared on forums reveal fluctuating fuel gauge displays, which may suggest underlying sensor, display, or pump issues. Malfunctioning sensors, displays, or worn-out contacts can lead to inaccurate readings, causing the gauge to remain stuck at a certain level. Furthermore, some owners have noted discrepancies between the gas pump shut-off point and the gauge readings, which may not necessarily indicate a malfunction. Addressing these gas gauge concerns requires careful diagnosis and consultation with qualified professionals to ensure accurate fuel level readings.