But sometimes the fuel level sensor contacts are too far gone to be fixed by a cleaning. If the fuel additive did not fix the problem, a failing or failed fuel sending unit is the most likely cause.

Within the fuel level sensor are small metal parts which send the readings to the driver’s dashboard and cause the light to flash.

It depends on how much you drive. The mass airflow sensor is a critical player in determining fuel mileage and exhaust emissions and one of the most important sensors in the vehicle in that respect.

General Motors has agreed to pay to repair the fuel gauges in several GM SUVs, following a defect investigation by the National Highway Traffic Safety Administration.

GM has issued a service bulletin about a fix now available for the 2020 through 2024 Chevy Silverado, Chevy Tahoe, and Chevy Suburban vehicles for a DEF sensor.