Overdrive Will Not Engage

So sometime last year the Runner sat a while during my valve/timing/water pump job. Starting and driving up for the first time after completion revealed that my torque converter and cat had gone bad. Long story short I had a shop replace the TC and cat, but ever since the whole debacle I haven't had overdrive. It worked fine before and I can turn the light on/off with the button, but it doesn't actually do anything gear wise. No codes are popping up either.

It's a 1996 T100 3.4 that I swapped in, and it all functioned great for the first 5 years of having it swapped, only now is it messing up.

I should also mention that I'm able to manually shift into OD with the solenoids unplugged. I've also checked continuity + voltage on the coolant temp sensor and the solenoids and everything checks out.

Thanks everyone!