Cadillac ATS Rear Differential Bearing Kit 2013-2019

This is a rear differential bearing kit for the Cadillac ATS (2013-2019) and CTS (2014-2019) with the 2.0T, 2.5L 4-cylinder or 3.6L V6. The kit is built around the F-577158, F-574658 and LM50134R tapered roller bearings used in the rear carrier on these cars, and it cross-references to GM service numbers 22993016 and 92230584. It is not listed for the CTS-V.

The usual reason these come apart is noise: a howl or whine from the rear that rises with road speed, a growl on coast, or a rumble that changes when the car loads up in a turn. Worn or pitted differential bearings let the carrier and pinion move, which wears the ring and pinion pattern and eventually chews up the gears if it is left alone. Catching it at the bearing stage is a far cheaper job than a complete rear differential assembly.

On the bench: drain the unit, pull the rear differential, and mark the carrier caps before removal so they go back in the same orientation. Press the old cones off with a bearing splitter, drive the old cups out, and install the new bearings with a proper driver so the cups seat fully against the housing. Check pinion preload and ring gear backlash against the factory spec before closing it up, then refill with the correct gear oil for your axle.

Check your model year and engine before ordering. AWD and RWD cars use different rear carrier assemblies on some years, so match the bearing numbers on your old parts to the ones listed here.