Posted 12/13/2025 18:52 (#11468959 - in reply to #11468803) Subject: RE: GM 6L90 Slip in 6th
Saunders County Nebraska
Just had mine rebuilt at 180,000 miles . Guy said that was not bad as i pull AA trailers and lots of other stuff . $5,000 but what's a guy to do . The new 10 speeds sound worse than these old 6L90s and around double that to replace
Youtube has video on how to reset the Transmission control module might be worth a shot