Pulsating brake on passenger front only

[rbtleblanc]

I own a 2017 Silverado 1500 with a pulsating braking issue. It happens on the passenger front only for no apparent reason. The pulsating will continue long enough for the rotor and the rim to get steaming hot. I can feel the truck lagging and it starts to tremble. The first time it occurred I actually thought my wheel was falling off.  The length of time it is happening varies each time it occurs. Sometimes it stops while driving and other times I have to sit the truck for awhile. No warning on the dash cluster. The flex hose looks good and the caliper checked out ok. Any help would be appreciated.

[Transient]

Have you pulled the rotor and checked to see if it's warped?  That's the first place I'd look. 

[rbtleblanc]

The pulsating happens on it own like an ABS issue. Once it stops pulsating the brakes are good. No pulsating when I apply the brake like when the rotor is warped.

[jawsmon]

I had a pulsating issue on the front. It only occurred when I was slowing down when exiting the freeway. It turned out to be a build up of paint or something similar. Cleaned the rotors and it was fine. 

Your issue seems to be a little more involved. It is like the brake fluid pressure isn't bleeding off all the way. I wonder if the piston on the brake caliper is hanging up? Is there a residual check valve in the circuit? 

Let us know once you figure it out. This is most interesting, good luck.