2019 Silverado, jingle or bearing noise 1st order of tire/wheel; they say there is a bulletin or PI, the dealership ordered parts (slinger, ring and seal) for the t-case and.... The parts were on national back order, now locked down by the strike. 30 days of waiting so far. I don't have a bulletin number
My dealer says that my 2019 Silverado RST needs a slinger, seal and ring (assume snap ring) on the diff to fix the LF squeak noise in 2WD only. They found a bulletin, ordered parts and will fix next week (I hope)