Strange issue but under slow acceleration, when the engine is under 2000 rpm, I get this annoying squeak out of the headliner. I can lightly push it up, just behind where the passenger side visor is and it stops for a short time. I am not sure how the headliner is attached and thought that maybe one of the clips was loose? Any ideas? Fairly annoying in an otherwise great vehicle. 2006 SR5 2wd, 3rd row