SOURCE: SUN ROOF
There is an "anti-trap" feature in your sunroof motor that will prevent the sunroof from closing if it "thinks" somthing is in the way.
The next time you have the problem, try helping the window by pushing it forward when you activate the close switch. This will tell us if the "anti-trap" is active. By helping the motor, it takes away some of the resistance and the motor thinks its OK to close.
If it works with your help, try cleaning the glass rails, sand, dirt, leaves and debris add friction to the system and cause a "false anti-trap".
Once cleaned apply the approved lubricant and work the window several times to spread the grease up and down the track.
Good luck and let me know.
Regards,
Bang on the catalytic converter being careful not to get burnt and see if it's loose causing a rattle. Until you determind what the problem is don't drive the vehicle. The other possibility is that you may need an engine. If what you're hearing us a connecting rid knock.
If the motor runs one way and not the other the problem is likely in the switch itself on the centre console. I gently levered out my switch, pried it open and cleaned the contacts with a very thin file.
Hi
Inspect the sun roof of your Pontiac Bonneville to make sure it's seated evenly on your vehicle, not raising or lifting at one corner. Lifting indicates the presence of debris on the tracks, or a damaged seal around the sun roof.
Remove the trim on the interior of your Pontiac Bonneville and allow the interior material to drop. Use compressed air to blow dust and debris from the tracks that move your sun roof. Treat the tracks using 3-In-One Lubricant.
Check the Pontiac Bonneville's drain tubes for clogging. Two of these run down the front of your vehicle to the bumpers. Two run to the back, most often by your tail lights. Clear the tubes using compressed air and replace them.
Clean the sun roof's rubber seal with a damp, lint-free cloth. Inspect the seal as you clean
Please get back to us if you have further query else please accept the suggestion.
Thank you for contacting fixya.com
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