I have a 1999 case 580 SL Series 2 that is stuck in reverse. When starting up it automatically goes into reverse. You can't shift it 1 2 3 4 when it's running . When u shut it off all 4 gears shift fine. When I pulled in the last time I used it there was nothing abnormal about it whatsoever no signs of anything happening or nothing no slippage no nothing.
Welcome to HEF @gollerexcavating24@gmail. Assuming this is a powershift model ..... What is the transmission module reading when you start up? Is it showing Rev? Is there any flashing lights? If so, when you long press the "M" button when the fault is present - what shows on the screen? Be specific.