Firing Order
The firing sequence for the 2008 Pontiac Grand Prix equipped with the 3.8L V6 engine (GM 3800 Series III) is 1-6-5-4-3-2.
Cylinder Numbers and Positions
Cylinder positioning is as follows when facing the engine from the vehicle front (radiator side):
- Bank 1 (Driver Side): Cylinder 1 (front), Cylinder 3 (middle), Cylinder 5 (rear)
- Bank 2 (Passenger Side): Cylinder 2 (front), Cylinder 4 (middle), Cylinder 6 (rear)