92 roadmaster estate wagon

Hello agian,

92 buick roadmaster estate wagon, 5.7 liter motor..

Having some tranny issues. When the cars driving, hot cold, warming, it doesn matter, you either have to keep the gas mashed to shift gears, or foot shift it. I started with a tranny filter/fluid, and that didnt fix the problem. I did not see any metal shavings. So i went to autozone and baught a vacuum modulator. But apparently it doesnt have one.... I could have sworn that they did, but theres a good possibility i mighthave been wrong. Not to menchion, it takes awhile to get to 55 (more than it should), and she loves to rev out, to 2,500-3,500 rpms before she'll shift by her self. but, from a dead stop, she'll try to move, (tires amke a small squel, but then its slower than death)
This feels like a vacuum issue........ But i dont see any vacuum lines running to the tranny.

I know that probbaly doesnt make sense, i just got out of work from a 18 hour day, and im tired.
Thanks for any help you guys may give,
Bill