Could have possibly fried the TCC Solenoid or the 4th Pr
. switch. But since it never shifted to 4th they should be fine. The 4th Pr
. switch circuit didn't make contact, if it had it would've smoked the 12V+ wire.
You can try running it on Jack stands & shifting back & forth 3rd to 4th to see if it'll make the 3-4 shift. If it will try the TCC Lockup again.