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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1645 (Engine Control System & Fuel System - 4.8L, 5.3L, 6.0L, 6.2L - DTC P0300 To DTC P1175) >> DTC P0641 or P06A6 >> Circuit/System Description

Circuit/System Description

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The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump control module monitors the voltage signal from the fuel pressure sensor.