chevy silverado to find a stuck vent? Defroster vent won't open when I use the dashboard switch to engage. Replaced switch, did not correct the problem. I believe problem is with actuator or a stuck door flap. I understand to troubleshoot my problem, I must detach or remove the whole dashboard to find the problem. To pay to have this done, cost is near $900.00. 90% in labor. I would like to know if anyone has made an attempt at doing this, if so I would like to know if it is worth the trouble to do myself or just pay to have it done
