Some Chevrolet G30 owners report experiencing issues with the gas gauge and speedometer malfunctioning, alongside the parking brake and ABS lights remaining illuminated. These problems may be linked to a malfunctioning ABS sensor, which is a common cause of such malfunctions. Additionally, some owners find that damaged wiring connecting the ABS sensors and control module can lead to signal interruptions, affecting both the ABS system and speedometer. Low brake fluid levels have also been noted as a factor that can trigger the ABS and traction control lights, causing them to stay on. While the regular brakes may still function, the ABS system may not operate correctly if only the ABS light is illuminated. It is recommended that affected owners have their vehicles inspected by a qualified mechanic to accurately diagnose and resolve these issues, as waiting for a scan tool to pinpoint the problem before proceeding with repairs is advisable.
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