TransTech 

Diagnostics

              Over 29 Years Of Diagnosing Transmissions

GM Techincal Information

NOTE: This mismatch of parts will not contact and generate metal debris or create any noise. Also found in re-man transmissions. The same mistake can be made with a 4T60E by installing the 4T65E Turbine Shaft in place of the 4T60E Turbine Shaft.