I have noticed that when I hit the brakes it starts pulling to the right. Kinda scary when towing, downhill and the roads are wet. I don't think it's the caliper hanging up. Could it be an alignment issue maybe?..... 89 3/4 ton 4x4 burb
Could be a few things like, the right side caliper is grabing harder, the right rotor is worn down more etc.. I would take it to a place that does free estimates.
Make sure there is no PS stop leak in the system...... :doah: :doah: :doah: Seriously though take the calipers off and put never-seize on the slides and try that.
The right rear drum may be grabbing hard due to a leaky wheel cylinder or leaky wheel seal. I had the same thing happen with my 14BFF, both a leaky seal and cylinder at different times. Both make it grab hard for some reason. You'd be suprised how hard the drums can make the truck pull.