Fuel Level Sender And Sensor

The fuel level sender is a variable resistor that is read by ECM. The ECM reads resistance and controls the fuel level gauge in response to float movements of sender.

The level sender is mounted on the module housing and is a snap-lock attachment. The sender and float are serviced as a unit.

Fig 1: Identifying Fuel Level Sender & Sensor

Courtesy of GENERAL MOTORS CORP.