Hi all hopefully someone can share some insight. I have a freshly rebuilt 545rfe :str:. A few months ago i did a oil and filter change after the break in and installed a stage 3 vb. last week the truck started having small 200 or so rpm blips every few seconds on the highway. I can feel a little jerk when it happens. no codes. fluid level perfect. only happens when applying light throttle to maintain speed. also happens in tow haul and cruze controll. I data logged my apps and tps, no abnormalities on either one... map is good. went for a drive with intake temp sensor and egr unplugged, no changes... tried a torque converter stall test and she went up to 2k rpm and spun tires... what else can i do to diagnose? How do i test the torque converter solenoid?