i have a built 4l60 e in my 94 and it wont shift into 3rd gear at any rpm it just feels like neutral im doubting if there is anything mechanicaly wrong with the trans because i changed the fluid and it was bright red no metal flakes or anything, and seeing how it has only been in it 4 a month with stock tires so im thinking something electrical in the trans like a servo or something for 3rd gear is messed up let me know what u think thanks

 

Well if it feels like 1-2-neutral then the 2-3 shift is being comanded so it is more then likley a mechanical failure. With no debris the most common thing is the snap ring broke or came out of the 3-4 clutch.

 

i had a similar problem and it was electical. My car would feel the same way goes into neutral with shifting to 3rd. It was just in the wiring. After i fixed that worked like a charm

 

You should contact the builder of your transmission. A 3-4 clutch failure in that little bit of time is very disapointing. Hopefully they will help you out. Vince

 

What did you find in the wiring???? I hope that is my problem too.........

Thanks!

 

Im A Newby to the V8 world. Love It! Just got A LS swap and a Built 4L60E In My old 2001 V6. Having the same problem with tranny, Replaced both shift silinoids cuz had them around. Thinking 3-4 clutches now. so how do i make sure with out wasting money on the wrong parts. 1st and 2nd shift normal, shifts to 3rd and nothing

 

I have been in contact with them and they have been very helpful so far. I am awaiting the replacement...and will let you know what they find.

 

Mine is similar too. But it only does it sometimes going into 4th (overdrive). Ive been racking my brain with this and I really wanna know whats goin on with it. Its the factory tranny and its a 2001 T/A.and it only seems to do it on the interstate. Any help is appreciated!!