Another wonderful 4x4 question

[Dougie129714]

2005 trailblazer. 4x4 won't engage. I can hear both motors trying to make the switch. New actuator. No service lights. When I switch the switch it lights up like it's in that mode. But .... now I'm lost

 

[Mooseman]

This is our goto thread for 4x4 issues:
4WD not working? Step inside.

 

[xhondastyle07x]

Most common fix is the internals on your disconnect. read up on the above post. I have a spare disconnect for sale if you are interested