i have a 1996 6.5 1ton, the 4l80e shifts fine then gos in and out of gear, also it has set ses

what codes stored?

I dont have access to codes but im heading to dealer, Im thinking something electrical cause also getting abs light. Seems wierd how these lights come and go, when ses goes out all seems well, then pops back on and tranny acts up. Thanks for your concern dmaxallitech.