how do I aim the headlights on the 2004 montana

to aim the head lights there is a very lon compicated procedure. a dealership will be best equipt to do this. if the headlightassembly was replaced due to damage from a collision of some type the steel frame work that the assembly mounts to may be bent or damaged. a simple aim would be to find a flat level surface with a wall in front of you there will be adjustment screws on the assembly that will require a special tool and just aim the beam to the same approximate height as the other side.