when i put my drivers side window down then up i get this faint grease streak on my inside side of the window...the cars an 09' with 15k....any idea whats causing it?

 

probably grease...

pull back the seal on the top of the door (bottom of window) and run a q-tip along it.
also take off your door panel so you can check out the inside of the door.

is it on the inside or outside?

 

its on the outside...id like to diy it so i dont have to take it to the dealer for something stupid...i mean its covered under warrenty but if its simple i can fix it

 

lol wow...

 

^well i can understand what he was saying he was reassuring it was grease because i said it was a question style

 

i just told you what to do.
roll the window all the way up.
clean the grease off.
then pull back the seal where the window meets the door.
roll the window down. (while still pulling the seal back)
roll the window back up. (while still pulling the seal back)

if there is no longer grease streaks on the window chances are theres something on the seal.

so if theres no streak, you know theres something on the seal, like i said before. take a q-tip and run it between the seal and the window to find the dirty spot(s). then clean those areas thoroughly.

if there is still a streak, (idk why there would be, thats really the only area the window actually comes in contact with) take off your door panel and get a better look to see what the culprit might be.

 

yep and if that doesnt work........open door,look at the end of the closing handle there is a spot to put screwdriver.pop the cover to the handle off,under it is a screw.
Next under the little flap in the door open handle is another screw.....
Seems if I remember the mirror sail piece at the window level by the A pillar need taken off,and then you cangive panel a pull and it will come off,then there are the wires for the switches,unplug and take off panel.
Cut away the plastic moisture barrier and look around inside door,they may have over greased the motor or something for the window......hope that helps,but most likely it is on the window seal.

 

i looked at the window seal, seemed clean...and it still does it...i would do what u said BZ but its under warrenty it can be there problem to fix when i find time to bring it up

 

did you just look at or did you even attempt to try to clean it?

 

grease on your window isnt something covered under warranty...

 

I attempted to clean it, and yes ik grease isnt covered....but my dealer is pretty kickass when it comes to ____, so ill bring it up there to have them check it out before i rip the door panel off...plus with school and work i dont have time to dick around with it