Why does ReadyLIFT not recommend AWD while Peak says no problem?

[slicer]

I use AWD mode 90% of the times in my truck. I truly dont understand why people leave it on 2wd mode, when I am in 2wd, I keep spinning one tire. I guess I just have a lead foot... My truck MOVES when AWD is on.

ReadyLIFT is way more affordable than Peak's level kit, however they dont recommend AWD while it doesnt matter with Peak. I dont undersand the logic, can anyone explain why?

 

[slicer]

This is what AI says....

 

[Duramax Joe]

Looks like Ready lift just wants a way to deny coverage of the supplemental coverage they offer because driving in auto4hi is not excessively hard on the t case unlike the added lift height is to the front axles. The awd shudder is usually caused by burrs or notches that develop on the clutch hub in the automatic clutch in the t case which can be caused by high torque applies of the clutch hub when in auto4hi.

 

[AXE]

If you go with a taller lift it helps to do a differential drop. That way the driveline stays flatter and the concern goes away. The ZR2 technically has a factory lift, so if it's raised more you get steeper angles in the driveline prone to more wear and issues. Probably only an issue if you're doing hard use and offroading. Just dumping on the throttle probably doesn't affect it as much.

Would be best to jump on Reddit or GM Trucks and see what people say about that kit.