My 1998 Cherokee has had both front window lifts fail in the last 9 months. Both failed because of a small nylon tab that was poorly designed. The $105 replacement assemblies (you can't buy the $.05 broken piece) sported a redesign, where the weak nylon peice has been replaced by a peice of hopefully more durable stamped steel.
I have saved receipts and am preparing to make a case for reimbursement. I'd like to hear of similar experiences, to give me some more ammo. Also, had anyone had any luck getting this replaced after the main warranty has expired? (I know this happens, as they replaced my bad brakes 2 times after the warranty expired.)