NEEP ADVICE ON SUNROOF PLEASE
 

I have a 2000 Expy EB. The sunroof had been working fine but last month it seemed to "go back to far" whaen I opened it. I had to remove the headliner and manually get the sunroof to move forward an inch or two then the motor would kick in and close it. For a few weeks, it seemed to work fine opening and closing. Now, once again it opened fine but seemed to go back too far and it will not close again. You can hear the motor "clicking" to push it back futher but I don't hear anything from the motor when I try to close it. I have to now take the headliner out AGAIN and close it. Is this a motor issue? A switch issue? The motor works fine to open it but won't close it after the glass goes all the way back. PLEASE LEND ME SOME ADVICE..................