The transmission already had problems slipping under heavy load. The trans fluid was really burnt....the fluid color was almost black.
The transmission has definately been needing to be swapped out for the past 6-8 months.
I installed a rebuilt transmission from a reputable trans rebuild shop.
Speedometer and tach used to work right up until I removed the bad trans.
UPDATE: I found the tach wire socket was unplugged......I plugged it in and now the rpm guage is now working.
As for the mph guage, I still have nothing. I know the sensor furthest back on the passenger side of the transfer case is the speed sensor. (this is a 4x4 2002 Chevy Tahoe). Anyhow, on that portion of the wire harness, there are 3 connectors that are identical.....two of those wire connectors can reach the speed sensor. I don't know which is which. I should have noted thier location prior to removal (but I assumed all connectors in the same section of the wire harness, have unique shapes preventing them from coupling with the wrong sensor).
I would not have swapped out the whole transmission to fix a speedo problem. (I've rolled my eyes more than a few times when I hear someone swaps out a major component $$$ in hopes of fixing a low dollar repair....)
Last edited by 1.8TTony; 11-22-2015 at 06:35 PM.