E-Locker Thrust Blocks | 2017-22 Colorado ZR2

If your diff fluid looks like anti-seize you likely have a wearing thrust block. This replaces the worn thrust block with a new slightly stronger 7075 aluminum one for better wear properties. GM considers this a wear part but does not sell the part individually to allow you to replace it without replacing the entire E-locker. Now you can replace just the wear part. This part is only in the rear E-Locker on 2017-22 ZR2 models.