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Genuine GM parts have one of these marks:
Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail Engine Control Engine Control Sensors
Fuel Pressure Sensor Replacement - Fuel Injection Fuel RailCalloutComponent NamePreliminary ProcedureRemove the fuel pipe shield. Refer toFuel Pipe Shield Replacement.1Fuel Injection Fuel Rail Fuel Pressure SensorCaution:Refer toFastener Caution.Tighten33-Y(25-lb-ft) ...