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GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 27664
Experience:  GM Grand Master Technician 2007. 11 years experience.
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1999 Pontiac Grand Am SE: moonroof wont close..I close it manually??

Resolved Question:

I have a 1999 Pontiac Grand Am SE and the moonroof won't close. How do I close it manually??
Submitted: 4 years ago.
Category: Pontiac
Expert:  GM Tech (Cam) replied 4 years ago.
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GM Tech (Cam) :

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GM Tech (Cam) :

I will do my best to assist you. When you are finished please click on accept only if you are satisfied. I don't get paid unless you do.Please do not accept if you cannot leave positive feedback. I don't know if you are a tech or a just working on your own vehicle so we may have to fine tune the answer. I only know as much about your problem as you have told me in your post, so my answers will be based on what you tell me so please add all the details you can.

Expert:  GM Tech (Cam) replied 4 years ago.
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Expert:  GM Tech (Cam) replied 4 years ago.

There is not a manual close function on this system so we need to get the motor working.

When it stops at half way, can you reverse it to open and does it work?

 

Customer: replied 4 years ago.
Yes, it will reverse to open and go back to 'full open' position. And no, I'm not a tech..
Expert:  GM Tech (Cam) replied 4 years ago.

OK, this sounds a motor and possible a cable issue. If the motor stopped and that was it, then I would say only motor. With it reversing, that sounds like the cables are involved as well. These work with a cable that has teeth on each side, and these interact with the teeth of the motor to move.

 

The second possible issue is the limit switches in the motor assembly that tell it when the glass is in a certain position. If those fail, it will react in this manner.

 

 

I know you don't want to hear this, but no manual way to close that is easy. YOu can take the headliner down to get at the motor and you could try turning the motor manually or tapping in it to reset the switch if there is debris caught in there.

 

Customer: replied 4 years ago.
Ok, thanks for that. How would this be serviced if I took it to a shop? Would they just replace everything in the system?
Expert:  GM Tech (Cam) replied 4 years ago.

Not likely. If it only needs the motor they will only replace the motor.

I would have them double check what we discussed and make sure they are not going to try the whole thing.

Customer: replied 4 years ago.
Ok, well I went and removed the front headliner where the motor sits. One of the connectors and wires that went to the motor had electrical tape over it; does it come stock this way that you know of? all I had to do was push on the wires slightly into the connector and the roof closed. Still the same diagnosis, or...? Thanks so much
Expert:  GM Tech (Cam) replied 4 years ago.

Tape on the harness is normal.

Moving the wires suggests there may be a poor connection at the terminals. If that is the case, those terminals can be replaced. I would try it out like this to confirm. Try moving the wires in different ways.

IF that remains constant, then replace the terminals.

 

GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 27664
Experience: GM Grand Master Technician 2007. 11 years experience.
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