Quote Originally Posted by SaukRapids View Post
The mechanical flush probably did the transmission in. In the 4T65E world, it's heavily recommended never to flush.

Torque converter lockup issues may relate to the TCC solenoid, which requires the side cover off. You'd have the trans almost out by then doing it properly.

Can do solenoids, hope the harness clips don't break and pray the issues are gone 1st run, or start saving up for a rebuild. Either are not attractive options, imho.
The issue was there before the flush, trans oil smelled burnt so I thought it would help.