02 Yukon sunroof won't close all the way

[Bjay]

My sunroof functions well just won't close all the way. It'll close all most all the way but stops, when I hit the button again it'll close the rest of the way but it leaves the back side of the glass sitting an inch below the roof line. I've already pulled out the headliner and everything looks intact..

 

[Bjay]

My sunroof functions well just won't close all the way. It'll close all most all the way but stops, when I hit the button again it'll close the rest of the way but it leaves the back side of the glass sitting an inch below the roof line. I've already pulled out the headliner and everything looks intact..

 

[avalonandl]

Clean the tracks.... probably dirt in the tracks.

Or bad motor?

 

[about20ninj45]

Is the window aligned properly?

 

[OR VietVet]

My biggest reason I will not own a Tahoe/Yukon with a sunroof. Even if it is just a moon roof that doesn't open. Too many chances of not working correctly and leaks. I feel for you. I see water there. Leaks, hate 'em.

 

[Bjay]

Clean the tracks.... probably dirt in the tracks.

Or bad motor?

Would the motoe be bad if it's still functioning? It moves fwd and backwards fine until it get to a certain point.

 

[Bjay]

Is the window aligned properly?

I believe so. When it's moving there isn't any hesitation or anything.

 

[adventurenali92]

I’ve torn apart several GMT800 sunroofs. They all suffer the same fate because GM put cheap plastic track and sliding mechanisms in them. Over time they break. The pieces get lodged in the track somewhere and then the glass doesn’t close properly. However check the alignment first before you go the broken track pieces route. Open up your sunshade and you will see four star shaped screws that secure the glass to the arms that slide it and tilt it. They’re T15 torq screws I believe. You can loosen them up and move the back portion of the glass up a little higher, retighten those screws and that will realign the glass so that the seal matches the body of the truck and it closes properly. Try that first. If it still doesn’t line up and close properly than that’s the sign that there’s problems with the track or sliding mechanisms.

 

[HiHoeSilver]

I’ve torn apart several GMT800 sunroofs. They all suffer the same fate because GM put cheap plastic track and sliding mechanisms in them. Over time they break. The pieces get lodged in the track somewhere and then the glass doesn’t close properly. However check the alignment first before you go the broken track pieces route. Open up your sunshade and you will see four star shaped screws that secure the glass to the arms that slide it and tilt it. They’re T15 torq screws I believe. You can loosen them up and move the back portion of the glass up a little higher, retighten those screws and that will realign the glass so that the seal matches the body of the truck and it closes properly. Try that first. If it still doesn’t line up and close properly than that’s the sign that there’s problems with the track or sliding mechanisms.

Resident sunroof guy. Lol

 

[adventurenali92]

Resident sunroof guy. Lol

Mine was broken and I wanted it fixed.... So I took several apart in the junkyard to see how the whole system pieced together.... not exactly a fun process, but an educational one... lol