GM W body cars, 3100 3400 SFI, 3800 engines

[Timothy Mummert]

I know it’s been many years since you posted… However ? Anyone with this code could give this a try.

On my 2003 Monte Carlo that had that code ( Long Shift Adapt ) I ordered a kit from TransGO shift kit and installed it, it was just a temp solution, but the code stopped.