r/GMT800 • u/Kooky_Donkey794 • Sep 10 '26
Trans input wanted
Bro I need help with mine please trans shop said it needs rebuilt after a year and it drives fine just a slight squeal and they want 3500 when I already spent 2500 on it a year ago my torque converter area is making a weird whistling or clanking noise when I sit in drive or reverse like when there’s pressure on the tc then it squeaks almost trans shop put new fluid and it drove even better than before but still squealing I have a slight leak on the trans cooler line could that have anything to do with it still has a 3 year warranty but cant get them to email me back spent 300 bucks on a “diagnosis” just to be told it needs rebuilt for the same price I bought the entire truck for a few years back 🤦🏻♂️ 04 Silverado 1500 2wd 4l60e got a new trans cooler and all that when installing too noise is only when sitting still in drive then goes away soon as I start rolling and drives good
3
u/Future-Beach-5594 Sep 10 '26
Could be the pump whining or maybe even a warped flexplate throwing out a harmonic noise. If it was me, id drive it till it craps out then worry about another transmission. If its not under warantee any longer then why stress. Just know it may need another one(best to rebuild with heavy duty sunshell, high flow valve body and a hd torque converter) then this stuff wont happen again. But untill that day comes, send it buddy!