What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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Bill 1960

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If you are ever unlucky enough to have a broken window, be particular to observe that the repair person gets all the broken glass out of the bottom of the door. Mine came to me that way; passenger front window had been replaced. The first time I was in the door to diagnose the slow window I observed a bunch of fragments and vacuumed it out thoroughly. Or so I thought.

Back in today to apply some Dynamat, and what do I find? More glass in the bottom of the door. So now I’m going at it with a vengeance. Vacuum, air compressor nozzle, brushes, thin screwdriver...
I’ve pulled the bottom weatherstrip off as well as the little body plugs hidden under it and blown air into all the holes and crevices. At this point I’m an hour+ into it and the glass fragments just keep coming, although every cycle of agitation then vacuum gets a little less. What a PITA! The little narrow wedge down near the bottom is the perfect design to trap and hold all those granular bits of safety glass.

You could drive around forever with it in there, because it won’t rattle, it’s wedged in. But in my mind trapped glass will lead to trapped dirt, then water. And it’s grinding through the paint. >>> Rust.
 

08z71bgm

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Nobody carries them in stock from what I read. According to Cometic all their head gaskets are made to order. Summits site says the same thing.


Production Notice: All Cometic Gaskets are made to order. Currently, we are experiencing a delayed 5 Week Production Time + Shipping Time on all orders. By placing an order, you agree to these terms.
This must be related to COVID because they were never made to order. I was able to get many different ones at any given time from cometic. Summit had them in stock. Hard to get raw materials now so this might be why made to order.
 

Doubeleive

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If you are ever unlucky enough to have a broken window, be particular to observe that the repair person gets all the broken glass out of the bottom of the door. Mine came to me that way; passenger front window had been replaced. The first time I was in the door to diagnose the slow window I observed a bunch of fragments and vacuumed it out thoroughly. Or so I thought.

Back in today to apply some Dynamat, and what do I find? More glass in the bottom of the door. So now I’m going at it with a vengeance. Vacuum, air compressor nozzle, brushes, thin screwdriver...
I’ve pulled the bottom weatherstrip off as well as the little body plugs hidden under it and blown air into all the holes and crevices. At this point I’m an hour+ into it and the glass fragments just keep coming, although every cycle of agitation then vacuum gets a little less. What a PITA! The little narrow wedge down near the bottom is the perfect design to trap and hold all those granular bits of safety glass.

You could drive around forever with it in there, because it won’t rattle, it’s wedged in. But in my mind trapped glass will lead to trapped dirt, then water. And it’s grinding through the paint. >>> Rust.
ya broken glass gets everywhere, I have found some years later even after many very thorough cleanings, there's probably still some in mine now.
 

Rocket Man

Mark
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If you are ever unlucky enough to have a broken window, be particular to observe that the repair person gets all the broken glass out of the bottom of the door. Mine came to me that way; passenger front window had been replaced. The first time I was in the door to diagnose the slow window I observed a bunch of fragments and vacuumed it out thoroughly. Or so I thought.

Back in today to apply some Dynamat, and what do I find? More glass in the bottom of the door. So now I’m going at it with a vengeance. Vacuum, air compressor nozzle, brushes, thin screwdriver...
I’ve pulled the bottom weatherstrip off as well as the little body plugs hidden under it and blown air into all the holes and crevices. At this point I’m an hour+ into it and the glass fragments just keep coming, although every cycle of agitation then vacuum gets a little less. What a PITA! The little narrow wedge down near the bottom is the perfect design to trap and hold all those granular bits of safety glass.

You could drive around forever with it in there, because it won’t rattle, it’s wedged in. But in my mind trapped glass will lead to trapped dirt, then water. And it’s grinding through the paint. >>> Rust.
I used to replace auto glass and I swear no matter how hard you try to get those pieces of broken tempered glass out of the bottom of the door they keep appearing. And the shop isn’t gonna let you sit there and keep banging on the door and vacuuming forever, labor costs too much and that’s not factored in to the allotted time so I just did as best I could in the short time and put it back together. There was always some left, I never had any complaints though so I guess it never shook loose enough to rattle.
 
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