Originally Posted by cabledawg
i have a 4l60e slips a little in reverse and drives fine in 1and2 but in 3rd starts to shake the truck until i back off the gas also does it in drive as well as overdrive trans was rebuilt about 9-10 months ago any help would be nice over 300k miles on truck but new motor and trans was recently rebuilt (how good i dont know)
year of truck? 4x4 or 2wheel drive?
Was the rebuild by a competent trans shop or a back yard DIY parts replacement?
the shake in 3rd gear is related to the 3-4 clutches. This clutch must be properly set up for use. Could also be related to cut sealing rings, loose input shaft in the aluminum drum.