Wow. Havent been on here in a long time.
Anyways,
My wife has a 2004 sxt auto.
About 2 years ago the trans cooler line popped off, dumped trans in the radiator, sucked in coolant and all that good stuff.
Got it all cleaned and flushed out.

About 6 monthes later it started having problems shifting from reverse to any forward gears, but only when the air temp is about 70 degrees. The car does great in the winter, but as soon as summer hits she has nothing but problems.
The car goes into reverse just fine every time.
Could this be a problem with the solenoids or am I just looking at replacing the trans?
When it starts having problems it will throw the general trans issue code and codes saying the gear ratio for 1st 2nd and 3rd are incorrect.
Also, what model trans is this?
Thanks