Solved High Pitch Screeching After 20Mins Running 700R4 Transmission
Chosen Solution Hi all, my 200R4 starts a terrible high pitch screeching after 20mins running. Sounds like “fingernails on a blackboard” but in a circular motion. And happens in or out of gear. From an ‘85 Olds. Highish milage but newish oil/filter. Video is on Youtube “700R4 transmission screeching” https://www.youtube.com/watch?v=McVNzVKl… Thanks in advance The first thing that comes to mind is the 700R4s front pump. I did some addition research on a few forums and a few people also said mentioned a possible torque converter but those usually went along with a problem in reverse, which you didn’t mention....