92Raiderburban
OBS Enthusiast
- Joined
- Sep 28, 2014
- Messages
- 59
- Reaction score
- 34
Manually shift '93 4L80. So about 3 months ago, lost reverse and 3rd. did a partial fluid change after changing the filter. Got 3rd and reverse back. Been fine up until a bout a week ago. Same symptom. This time check filter to make sure wasn't clogged up. Wasn't. I have 1st and 2nd. Shifts into 4th (via visual rpm drop) but when opening throttle to half way, rpms jump to 2200. TCC locks up but only drops about 200 rpm roughly. B Solenoid dead ? Or my clutches toast?