I need to replace the aspirator in the headliner and need to know the proper procedure for removing the headliner without damaging anything. I already have the visor off and lowered the A pillar trim. It still feels like the headliner is secured by something but I didn't want to force it and cause more damage. I do not need the entire thing to come down just enough to reach in and replace the aspirator on the driver's side. Any help would be much appreciated.

2003 silverado 1500 ext. cab