2003 Tundra Have 4hi and 4lo but won't go to 2wd

This has probably already been covered, but here goes. 2003 tundra that goes between 4hi and 4low fine, but just flashes 4hi when attempting to go to 2wd. I took apart the rear transfer case actuator and cleaned it, but it made no difference. I should say, the gear fell out and it took a long time get it in the correct position; I couldn't find any videos that showed how to calibrate this model, but after much trial and error I was successful. Still, no 2wd. If I understand what I've read correctly, there is also a front actuator, so this could be the problem?

 

If by front actuator you mean the one on the front diff I don't think that would be your issue. Sometimes with mine I need to move forwards or backwards a couple meters while its trying to engage or disengae to get it to work.

unfortunately I can't offer anymore help/advice.

 

I gave that a try, but it was unsuccessful. Thanks for the info.