APPLIES TO: This simplified fuel pump circuit wiring diagram applies to the following vehicles:
Chevrolet:
- Express (1500) 4.8L, 5.3L: 2003, 2004, 2005, 2006, 2007
- Express (2500) 4.8L, 5.3L, 6.0L: 2003, 2004, 2005, 2006, 2007
- Express (3500) 4.8L, 6.0L: 2003, 2004, 2005, 2006, 2007
GMC:
- Savana (1500) 4.8L, 5.3L: 2003, 2004, 2005, 2006, 2007
- Savana (2500) 4.8L, 5.3L, 6.0L: 2003, 2004, 2005, 2006, 2007
- Savana (3500) 4.8L, 6.0L: 2003, 2004, 2005, 2006, 2007
This typical circuit diagram includes the following circuits: fuel pump relay and fuel pump.
The fuel pump can easily be tested with a fuel pressure test gauge. You can find the tutorial here:
RELATED WIRING DIAGRAMS:
- Starter Motor Circuit Diagram (2003 V8 Chevrolet Express, GMC Savana).
- Ignition Coil Circuit Wiring Diagram (2003-2007 V8 Chevrolet Express, GMC Savana).
More Chevrolet Express (GMC Savana) Tutorials
You can find a complete list of V8 Chevrolet Express (GMC Savana) tutorials in this index:
Here's a small sample of the tutorials you'll find in the index:
- CKP Sensor Test -No Spark No Start Tests (GM 4.8L, 5.3L, 6.0L).
- Bad Fan Clutch Troubleshooting Case Study (GM 4.8L, 5.3L, 6.0L).
- How To Do A Compression Test (2003-2014 V8 Chevrolet Express, GMC Savana).
- How To Test The Fuel Pump (2003-2007 V8 Chevrolet Express, GMC Savana).
If this info saved the day, buy me a beer!