On a GM engine The #1 cylinder is located drivers side, front of engine.
Passenger side
cylinder #1 is the first cylinder from the passenger's side on the rear bank.
1st cylinder up front on the drivers side.
The passenger side front cylinder is #2 The drivers side front Cylinder is #1
it is located to the front of the engine on the drivers side..
when you open the engine cover look at the right side as you stand . no 1 cylinder is the inner one in the side where the starter located.
Front driver side.
Cylinder #4, is located on the Pass. Side near the fire wall. Cylinder #5 is located on the Driver Side (First one)
The engine cylinder at the front of the engine is the # 1 cylinder The spark plug on the intake side ( drivers side ) is the # 1 intake spark plug ( The spark plug on the exhaust side ( passenger side ) is the # 1 exhaust spark plug )
Cylinder # 1 is the front cylinder on the passenger side and Cylinder # 4 is the back cylinder ( by firewall ) on the passenger side firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
they are located on the passengers side 1 being closest to the fan
cylinder one is located in the engine compartment passenger side first cylinder close to wind shield.