Learn how to replace a fuel sending unit. Our fuel gauge sending unit guide and installation video covers all you need to match your fuel sender and gauge. Talk to the experts. Call 800.979.0122, 7am-10pm, everyday. REWARDS.. If the sender is grounded through the fuel tank - connect one lead of the multi-meter to the sender wire and the.. A-Premium Fuel Tank Sending Unit Compatible with Chevrolet Malibu Monte Carlo & Buick Regal Century & Pontiac Bonneville Grand Am Grand Prix Grand Lemans & Oldsmobile Cutlass, Replace# 25001613. 4.5 out of 5 stars. 4. $36.99 $ 36. 99. FREE delivery Thu, Mar 14 . Only 17 left in stock - order soon.

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The Sending Unit. The sending unit is located in the fuel tank of the car. It consists of a float, usually made of foam, connected to a thin, metal rod. The end of the rod is mounted to a variable resistor. A resistor is an electrical device that resists the flow of electricity. The more resistance there is, the less current will flow.. A Fuel Tank Sending Unit is an essential component of a vehicle's fuel system. It is responsible for measuring the amount of fuel in the tank and sending that information to the fuel gauge on the dashboard. The sending unit typically consists of a float attached to a variable resistor. As the fuel level in the tank changes, the float moves, and.