Is your headliner sagging?
Headliners are possibly built by the laziest workers at every automotive manufacturing facility. I don't know if it's just a secret, agreed upon code, or if there hasn't been a good adhesive made standard; all I know is that many cars suffer from a sagging headliner.
Our ’05 GTO, considered to be a very well built car, now suffers from this problem that was worsened when we installed our rollbar to the already sagging headliner.
In an upcoming issue we will be rebuilding our headliner. This will apply to every Pontiac too. We will be using a durable adhesive and covering it with a microsuede material, the same found on the doors and center console accent. This will add a bit of custom flavor and is an easy solution to the problem.