Welcome to the Herd; lots of friendly knowledgable folk in these forums!
DriveTrain in these SportTracs (V6~4.0L~SOHC Engin + 5r55e Trans + 1354 TCase +...)
certainly has a few quirks\weaknesses,
but if those issues are remedied with specific fixes & dligent maintainence,
they can be a reliable longlasting vehicle.
Basic vehicle specs (Year+Make+Model+Engin+Trans+2WD\4WD+Diffs+...)
in your Profile+Signature+Threads will encourage+expedite responses to your questions.