jeeptester

4l60e 2008 complete pull out from silverado installed in jeep wrangler, shifts fine but was asking around why sometimes it pukes oil out vent. I was told drive at highway speeds,tap brake rpm should drop around 200. Did test and no change in rpm, so what do I check? Is it not locking or is it locked all the time?
More info the ecu and harness was flashed a three wired, I built the relay to supply v when brake is not pressed and broken at brake applied, the harness guy labeled two light blue wires to tie to the relay,


Any ideas what to test?
Thanks
Lowelll