Nels 
2007 Nissan Altima Sedan 3.5 SE 4dr Sedan (3.5L 6cyl 6M)
New Transmission
 Hey everyone I'm an owner of a 6 speed 2007 Nissan Altima that is on its second transmission.  I noticed the problem when I couldn't shift out of 2nd gear.  I called the dealer and they give you the runaround as if I never drove a manual before.  So I let it go for a week until I said enough is enough.  I called and told them I had a wedding to go to in West Virginia and I need my car looked at and I'm not leaving until I know whats wrong. 4 hours of waiting and they say,  It looks like you need a new transmission.  My stomach dropped. Well it was covered so they had to eat that 4500 dollar bill, but I noticed again that shifting into second is harder then ever. So it looks like it's going back.