Why my window doing this.

[eph1zzle]

First I would like to say I am new here and I've already found out how to resolve most of the issues I'm having by lurking around a few days. the two issues I cant resolve right now are 1. a slight rocking in the back rest of the drivers and passengers seat no idea whats loose in there. 2. my right rear door window sticks for a second then slams down about an inch and a half when you roll it down. I pulled the door panel off yesterday, and noticed some slack in the cable on the regulator when the window is rolled up and gets REALLY tight when attempting to roll it down. I'm not sure if the regulator is bad, if the cable/spindle need to be rewound, or if i need to replace the motor. Any advice would be very helpful I took a video off the window so you can see the issue. BTW this is on a 2000 Yukon SLT

http://youtu.be/pGI35Y4-YAk

 

[MrFleming007]

Curious about the back of the seat as well. My drivers seat does this

 

[BubZX]

Regulator is going bad.

 

[bkboatnsleds]

Regulator is going bad.

Yup

 

[26slate]

bump my 02 driver seat moves a little too...??

 

[MattyZ]

Drivers side rear window does the same, seems to rock back and forth when touching it. 07 Tahoe LT.

 

[eph1zzle]

Regulator is going bad.

Ty