If the door feels like it is "hitting" on something, it is probably either worn hinge pings or the latch located on the body of the car (and not the door itself) is out of adjustment. If it closes but doesn't latch, it is either a faulty handle, latch, or latch rod/cable. All of these parts should be available at your local auto parts store.
yes, you need to close drivers door, open passenger door and use central locking button, then close passenger door and use key.
you just have to push up on the latch
in a plastic pot in the passenger door or drivers door......
does it have a child proof lock syetem that locks from drivers door?
Defective windshield seal? Door not aligned properly? Defective door seal?
Sometime the latch on the edge of the door gets tripped; if this is it, take your finger and flip it over then it will close. I hope this is the problem .Mark
with metal
Here's a great how to video that will show you how to properly remove the door panel on your 2005 Chevy Malibu. A link has been included below.
behind passenger side fender close to door
If the door is sagging then you could look at the door pins and bushings. If the bushing is cracked then it will sag and therefore not close properly. If that is the case then the pins and bushings should cost under $10 and take about a half hour to do. Hope this helps.
Vandals started placing gum on the train door sensors, leading to malfunctioning doors.
Check to see if the air diverter door is working. It sounds like the door is shut and air cant come to the drivers side.