Alright this is really hard to explain but Ill do my best. My 2004 ECSB 2wd 04 5.3 has some what of a strange vibration that feels like its coming somewhere in the drivetrain. For example I can be driving on a pretty smooth road and it feels like im driving over rocks, but sometimes it will some what smooth out, its very subtle. Then latley ive been noticing the transmisson will randomly try to downshift it seems when im crusing but its only happend once or twice, then today I got on it getting on the high way and it took off but once I hit about 75 or 80 and the RPMs balanced out it almost felt like something was binding. Then I got on it again a little closer to home and it almost felt like the tranny slipped the RPMS went up but it didnt seem to take off like it normally does and usually it will chirp tire shifting from 1st to 2nd and sometimes 2nd to 3rd but it doesnt seem to do that. Then the other day I was turning onto a road in town and got on it and it didnt down shift and it just kind of slowly went up in RPMs. And sometimes when Ill turn corner it almost feels like something is binding. As far as mods go I have LTs CAI nelson 89 octane tune transgo HD-2 vette servo billet 4th servo Billet acumulator piston. Then for the rear end I have the Stock grenaide 80 and stock 3:73s. Sorry Its a pretty vague description but hopefully will chime in with an idea. I did notice a few days ago my tail shaft seal where the drive shaft meets the tranny was leaking and thats about when I noticed all this stuff so not sure if it could have anything to do with that? I check my tranny fluid often and its still red and doesnt smell burnt but something tells me my problems might have something to do with the tranny rear end or possibly U joints but im not sure so any suggestions are greatly appreciated!!
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Originally Posted by RedHeartbeat
