I have a 2002 Chevy Camaro Z28.
This issue is with the 4L60E trans.
It is binding up in reverse like the brakes
are being applied.
This was a professionally built transmission and new torque converter. done less than 1000 miles after shipping it from USA to New Zealand
I pulled it down and found a damaged input shaft seal (first one on the shaft) and the clutches starting to burn.
Fluid was still very clean
I think I have wrongly assumed that the input shaft seal was the cause. I am 99% sure I did not damage any input shaft seal on reassembly.
Low - reverse clutch pack appeared undamaged.
3-4 appeared darkened but I don't think burnt - this may have been evidence of a 3-4 clutch issue before the original rebuild?
The forward clutch plates had started to burn
The over run clutches appeared fine
I replaced all clutches, steels and seals including 3-4 piston etc.
The issue seemed solved only to reoccur about 100 miles later.
As yet I have not been able to find the exact reason for this bind up. No one I can find has seen this fault in a 4L60E before.
I need to locate the cause of this and fix it for good.