ABS It seems like my ABS is kicking on when it's not needed. At low speed, almost a complete stop the brake pedal stiffens up and that ABS grind sound is heard. If I let off and re apply the brake I stop.

1. I would not be concerned because if there was a failure in the ABS you would definitely get an ABS warning light and the ABS and most likely the stability control/traction control systems (with added warning lights) will all switch off .

2. You can test if the ABS is operational. On a very quiet damp surface, straight, wide road( with NO other cars around), apply your brakes hard from a very low speed - up to 20 mph ONLY driving in a straight line - until the car stops. The front brakes should attempt to lock up under hard braking and if the ABS is operational you will feel it kick in and the brake pedal will pulsate as the ABS constantly allows brake pressure and then releases it to prevent the wheels from locking up on the damp road. If the ABS does not kick in be ready to release the brake pedal quickly to allow the wheels to rotate so you can steer the car safely. Without the ABS the front wheels should begin to lock up on the damp road surface due to the low level of tire grip. ONLY test this at very low speed and ONLY when driving in a straight line on a straight section of wide road with no other vehicles around.

Sounds like you have a dirty or bad Speed sensor (ABS). The griding is actually the ABS pump kicking in because it's getting false readings. Clean or replace the sensor(S) in the front wheel hubs. It is recommended to NOT drive the car until this is fixed. (WHY???) Because even though right now they seem to work, one of these times you will go to hit the brakes, they will become rock hard and you will bot be able to push on the pedal, you will have an accident and could be seriously injured.

look on the front axles for the ring with teeth look between the teeth for cracks rust forms behind the ring and the rust expands and cracks the ring the crack then sends the wrong speed signal to the brake module

Sounds like maybe cheap brake pads with to much metal in them.

sounds like the ABS kicked in while your wife was coming to a stop. This would be known as overactive ABS. It usually occurs under 5 mph while braking. It is usually caused by a speed sensor signal dropping out at slow speeds which makes the ABS module think that the wheel has locked up. It will then engage the ABS to unlock the wheel even though the wheel is turning. The brake pedal will fade and the grind of the ABS motor will be heard.

If this was an isolated incident it will be difficult to determine the source of the problem. It it becomes more frequent and predictable it will become a lot easier to figure out. Most of the time a scan tool capable of reading ABS data will be used. The vehicle will be driven while monitoring ABS wheel speed data. When the problem occurs the wheel speed on one of the wheels will drop out and then that wheel/bearing/sensor can be inspected.

Did you torque the axle nuts after installing the new hub and bearings to the proper spec?

Have you checked to see if the new bearings are still tight? with the wheel off the ground grab it at the 12 and 6 o'clock position. if there is any play than that could cause the problem.

let me know what you find or if you have any more questions.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

There's a service bulliten about that problem with rust build-up on the front hubs pushing the sensors out of posistion [ most common on the pickups in areas that use road salt ], it happens mostly at very low speed. The best way to find out the problem is to have the system scanned.

Sounds like you are leaking brake fluid. The grinding sound may be from the brake pad not disengaing from the rotor because of low brake fluid pressure. Have this checked immediatley you may loose all brake function!!

Sound like tha ABS motor needs relacement

Take it back, they obviously messed up something. It could be the axle/cv joint or they bent one or two brake disk(s). It could be they did't install the calipers correctly, missing parts.

You have a weak or bad ABS sensor on one of the hubs. They are built into the hub and are not individually replaceable. Also rust buildup around the sensor will cause this same problem. To stop the ABS from kicking in untill repair just pull the fuse.