Replace the Calipers and rotors on both sides.
Don’t use Cheap Parts, like Auto Zone, these are from China and can wrap as soon as you step on the pedal.
Use a Vac Type Bleeder to pull as much fluid through both lines as you need to, to remove the air and look at the fluid and see if there is dirt/rust in the lines.
If dirt in the lines consider replacing them too and new rubber hoses.
$$$$ yes it will cost extra to do it right but "everything in time”… “Do It Right The First Time”.
4x4, 5sp, Std Cab, Stepside, E4 Red
4” Lift - Coil-Overs, 6” SkyJacker Leafs - No Blocks (Mistake)
31 Spline FX4 Rear Axle, 4.56s and OX Locker, Hurst Shifter w/Optional Stick and "Made by Grev" alignment adapter