I recently had the 4” Fabtech installed on my 16 Denali and I’ve had a clicking noise under stand still to acceleration coming from the rear. I took the vehicle in to see if the shop could diagnose the noise but they told me with the 3” spacer of the Fabtech my rear suspension is a really big bind and the axle has shifted about an inch to the passenger side. My passenger rear tire def sticks out more and the driver rear is slightly less out. They recommended I get an aftermarket adjustable torque bar to bring everything back into line. My rear shocks and the coil springs are almost diagonal when looking at them versus straight up and down. Fabtech said if I install the 2” spacers it will bring the axle back towards the driver side some...but they’ve had no issues reported about axle shift. I’d like to get this fixed ASAP and I’d love to keep the ride height as is without installing the 2” rear spacer. I’ve had so many issues with the install going wrong here in ODESSA and there is no one i can trust to take it to and there’s no way I can take it to the shop that did the install bc they can no longer be trusted.