Trucknogo

Hello 2011 Sierra. 6l thought this issue was related to tranny but swapped and still happening. Feels like brakes applying while driving,was backing up driveway and noticed had to push peddle more then usual. Could hear the brake switch attached to peddle click off and on while not touching peddle. Put truck in natural while moving felt like brakes apply right away. Took ride around block then heard a click and felt like brakes released and truck started to move easier. Replaced the ebc and the abs block over a year ago had codes for it, took to shop to get programmed no issues since. Just simply swap out the brake switch? Any programming etc to go with it? Anyone have somewhere to start? Thank you

Hello all, looking for some help, have a 2011 Sierra 3/4 340,000kms owned from new just replaced transmission few thousand kms ago with a lower km one. Now I have a rattle sounds like a marble in a can coming from torque/flywheel. Didn’t use new bolts on torque mounting had similar noise before checked the bolts one got maybe 1/4turn on out blue lock tight on them seemed to go away. Now it’s back and worse then ever, going to check those bolts again when off work. Do these have a habit of coming loose? Anyone have any other ideas where to look? Have a recording of noise just can’t figure out how to post it . I could email it if someone wanted to hear it. Thank you