I have the "Click of death" with mine. Took the back of the seat apart as much as I could without taking the whole seat cover off. The lumbar adjust is not an inflatable bag. Looks like a slide that is cable operated. Goes up and down to adjust the lumbar "bump". I did not have time to really get into it so I just buttoned it back up and reinstalled the seat. Looks to me like a bad design. I think the whole seat back has to come apart, ie uncovered to get to the mechanical parts. Someday I will try to fix it but I have grass to mow.....G
05GT, 09 GT500 Drivetrain, 2.6 pulley, JLT intake, 18x9.5 GT500 wheels, 14" Brembos, 2014 rear brakes, 14 cooling fan, Cortex racing Koni Coilovers, Cortex Watts Link BMR:K-Member, Tube rad support, adj upper third link, rear relo brackets,JBA long tubes and catted mid pipe, Stillen adj front & rear sway bars, Bump steer kit, Steeda shifter, Spydershaft Aluminum DS.
John Lund tune, 568 rwhp, 560 tq.
Mine went out maybe a year ago. I heard a motor, but nothing was being done. It was still under warranty & the dealer had to replace the entire power seat assembly. It cost them several hundred dollars to fix it.
I had the same problem. Dealer said it was just the bracket that hold the motor in place. When it did break all it did was pop and then all you heard is the motor nosie. If it has warranty take it back to the dealer and good look.