Engine Firing Orders: 2003

Oldsmobile	Alero	2.2 liter DOHC L4 VIN "F"
Oldsmobile	Alero	3.4 liter V-6 VIN "E"
Oldsmobile	Aurora	4.0 liter DOHC V-8 VIN "C"

Oldsmobile Truck	Bravada 2WD	4.2 liter DOHC L6 VIN "S"
Oldsmobile Truck	Bravada 4WD	4.2 liter DOHC L6 VIN "S"
Oldsmobile Truck	Silhouette	3.4 liter V-6 VIN "E"

Additional Information provided courtesy of AllDATA