Yukon/Denali XL 1500 4WD V8-6.0L VIN U (2004)
Fuel Pressure: Specifications
Fuel Pressure (Key ON, Engine OFF) ............................................................................................................................................. 385-425 kPa (55-62 psi)
Fuel Pressure (vin Z) ....................................................................................................................................................................... 335-375 kPa (48-54 psi)