The other day the trans started shifting weird. Would get to 3500 rpm and rev and drop rev and drop a few times then shift. This was all gears. Got home and didn't want to catch reverse. I can hear noise like rattling from converter area. Has a tci sizzler that was put in 2yrs ago... I readjusted the tv cable and test drove. Worked for a few mins and right back to where I started. I ordered a tv cable should b getting it on the 7th but not sure this is only prob. Could the converter b shot again...? Or is it likely the transmission is toast again. Trans is a 700r4 from a 94 1500 Sierra. Reverse was weird already only liked to grab when warmed up. Other wise has brand new fluid just months old. Don't have the money to spend on major issue right now. Been bad couple of months