Ok so about a week ago did a tranny flush everything went great.....but last night my GF noticed that in reverse my truck would squeak really bad and it was only in reverse....so I went under and lubed up my leaf springs figuring they were like the problem like always but they werent. Then the sound starting sound like my rear tires were rubbing something, but they werent. So I than grabbed the WD40 to try and locate the problem well i sprayed the carrier bearing drove around in reverse and after a little bit it went away. So i drove home and it came back bc i only use WD40 and just right now I used some grease around the carrier bearing U joint and had to drive it around in reverse and it finally went away.
My question is....Is my Carrier bearing blown or do they sometimes need to be lubed up?.....Also if greasing is fine is what I did to it ok or is there another alternative?