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Home >> Cadillac >> 2005 >> CTS Base, 2.8 T, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.8L - Introduction >> Description and Operation >> Fuel System Description >> Modular Fuel Sender
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Modular Fuel Sender

Fig 1: Modular Fuel Sender
GM1326928Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Secondary Fuel Level Sensor - Left
2 Fuel Return Pipe from Engine
3 Fuel Feed Pipe to Engine
4 2-Way Check Valve - Fuel Supply
5 Siphon Jet Pump
6 Primary Fuel Level Sensor - Right
7 Fuel Reservoir/Bucket
8 Fuel Pump
9 Fuel Strainer/Pick up
10 Return Fuel Check Valve for Reservoir
11 Return Fuel Jet Pump
12 Fuel Pressure Regulator
13 Fuel Transfer Line
14 Fuel Strainer/Pickup

The modular fuel sender assembly mounts to the threaded opening of the plastic fuel tank with a seal and a retainer ring. The reservoir, containing the exterior inlet strainer, the electric fuel pump and the pump strainer, maintains contact with the tank bottom. This design provides:

The modular fuel sender assembly maintains an optimum fuel level in the reservoir (bucket). The fuel entering the reservoir is drawn in by the following components: