09/18/2026
A lowering kit wasnโt the problemโthe worn U-joints were. ๐
This 2007 GMC Sierra came in vibrating after another shop installed a 4/6 IHC SUSPENSION lowering kit. We diagnosed excessive play in the driveshaft U-joints, replaced them, and now it drives smooth again.
Selling the kit is only part of the job, honest answers and technical support afterward matter too. ๐ฏ