Two problems related to wiper have been reported for the 2004 Chevrolet Suburban. The most recently reported issues are listed below.
Rear tailgate glass has separated from the glued on hinges and dropped down on the drivers side. This appears to be an ongoing design, quality issue and has happened on a large number of SUV style Chevrolet vehicles as can be seen using a simple internet search concerning this issue.
Heard rattle and a wind noise as if a door or window was partially open. Rear liftgate glass passenger side hinge partially separated from window glass, allowing the strut which lifts the window up normally to push the top edge of the window up about an inch. What makes this dangerous is that if at highway speed, the wind could have easily caught the lifted glass edge and stress it enough to shatter and injure someone or damage a following vehicle.