Fuel System Description: Notes
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.
| Callout | Component Name |
|---|---|
| 1 | Fuel Rail |
| 2 | Fuel Pressure Sensor |
| 3 | Fuel Injectors |
| 4 | Fuel Return Junction Block |
| 5 | Fuel Tank |
| 6 | Fuel Injection Control Module |
| 7 | Fuel Filter |
| 8 | First Start Fuel Bleeder Valve |
| 9 | Fuel Injection Pump |
The fuel tank (5) stores the fuel supply. A mechanical fuel injection pump (10), located below the engine intake, draws fuel through the fuel injector control module (6) and the fuel filter (7). The fuel is used as a coolant for the fuel injector control module. The fuel pump output is controlled by the ECM, and provides fuel at the pressure needed by the fuel injectors (3). The fuel injectors supply fuel directly to the combustion chambers of the engine. A separate pipe returns unused fuel through a fuel cooler (4) and to the fuel tank.