2007 2500HD vibration in back seat

[Kollerman]

Guys,

I just bought a 2007 Silverado 2500HD crew cab (new body style). About 2 weeks ago, my back drivers side section of the back seat has been shaking and rattling really bad. Every time I go over a bumpy road, my back seat shakes and vibrates. It is really really annoying when you are driving.

Does anyone know of a way to get rid of this vibration? Can I just tighten the seat? Or do I need to take this in to get it looked at?

FYI, on the passenger side seat, there is no vibration at all. Seat is very tight and does not move when driving.

Thanks.

Jeremy

[TomsSnowPlowING]

See this is from April. What you do?