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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Engine Controls - 4.8L, 5.3L, & 6.0L (Introduction)) >> Description and Operation >> Fuel System Description (Cab Chassis) >> Fuel Level Sensor

Fuel Level Sensor

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The fuel level sensor is a part of the fuel sender assembly. The position of the float arm indicates the fuel level. The fuel level sensor contains a variable resistor which changes resistance in correspondence with the amount of fuel in the fuel tank. On models that are equipped with a single fuel tank, the fuel level sensor is wired directly to the instrument panel (I/P) cluster. On models equipped with dual fuel tanks, both fuel level sensors are wired to the powertrain control module (PCM). The PCM calculates the total fuel level in both tanks. The instrument panel (I/P) fuel gage displays the total fuel level in both fuel tanks.

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