Just had my 2020 ZR2 inspected, and the left rear shock is leaking a bit, with only 17,000 miles on it, never off road or abused. It sits in my garage most of the time. I was pricing a GM replacement shock, and I almost had a seizure! Please, can any of you guys tell me if there is an alternate replacement, maybe from one of the lift kit companies, that is cheaper than $600 each? The manufacture and a part number would be great and much appreciated. Thanks in advance guys, oh, and gals!