94' suburban 454 Trans. no shift when warm

[Roy Sanders]

Problem is 2 fold,
1). just an annoyance which is the fan clutch (typical Chevy truck problem) engaged anytime temp is above 190, does anyone know of an in-expensive electric fan alternative?
2). When the temp is around 210, acceleration is zilch, RPM is up and the transmission doesn't want to shift up. I live in arizona and with the engine temp running 190 and above most of the time (in traffic), this is becoming quite a problem????????????????

Thanks