pulsing on decel, brake not applied

[blacknblue#2]

Hey guys I have a 2001 tahoe with 220k on the clock. I recently noticed a slight pulsing on decel with the brake not applied. It feels just like the brake slightly applied onto a bent rotor but that's not the case. If I throw the truck up in neutral it stops. I cant see it in the tach and it won't fully stop the vehicle. It may have always done it but I just recently noticed it. In acceleration it rides and shifts like brand new. And you really have to be paying attention to feel this pulse. What could cause this a d should I worry? Thanks

 

[03YukonNH]

Is the cruise control on at all? Going down hills with the cruise on I notice the same thing.

 

[blacknblue#2]

No cruise when I notice mine. Its most noticeable when driving in town at slower speeds between stop signs. When It off the throttle to coast up to the stop sign. Drove it to work today and never noticed it. I think its mental lol.

 

[ccapehartusarmyINF.(ret)]

does your e brake work currently if it does it mite need to be adjusted i forget how
if it doesnt work do you think its possible youve done what i did wich is set the ebrake once and forget you did it and drive around with it set all day
yours mite be stuck partially applied or something