Hi, trying to replace my inner window sweeps (mounts to upper door panel) on my 90 ZR-1 . The car should be all original but the manual says they are stapled on. Right now , they are riveted on with black rivets. Also, all the replacements, including NOS GM have foldable tabs on them, and the tabs don't even exactly line up to holes in door panel plus the foldable tabs don't fit. There is nothing about them in the FSM so I assume they are not technically serviceable parts per GM, but are available as a seperate part number plus are available in the aftermarket. So help me with the correct installation plus help me with how to attach the replacements with foldable tabs. I have both GM NOS and a set of aftermarket, just need installation advice/help.
Help with C4 inner window sweep details and installation
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Re: Help with C4 inner window sweep details and installation
Chris------
Part of your problem in getting a response is terminology. There is no component of a door panel which GM ever described as a "sweep". There are 2 components on the top of each door panel which are referred to as sealing strips, inner and outer. I don't know which of these you are referring to although I suspect it is the inner.
What are the part numbers of the NOS GM pieces you have?Last edited by Joe L.; October 4, 2020, 01:55 PM.In Appreciation of John Hinckley- Top
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Re: Help with C4 inner window sweep details and installation
Here are the pictures of the parts I am getting. I have tried both NOS GM and aftermarket, they are both designed the same way with the folding tabs. Now, there are different part numbers for 84-90 which of course have a different interior and door panel but the 89's don't have the tab. The car I am installing them on is a VERY early production 90 ZR-1. I wonder if they could have used 89's on the 90 and if that is even possible... My 95 seems to have the foldable tabs but the catalog shows the same number for 90-96? The photo of me pointing to the seal is from my 1995. Also, the master GM catalog shows a specific part# for 90-91 passenger side seal.Last edited by Chris G.; October 4, 2020, 07:09 PM.- Top
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Re: Help with C4 inner window sweep details and installation
Here are the pictures of the parts I am getting. I have tried both NOS GM and aftermarket, they are both designed the same way with the folding tabs. Now, there are different part numbers for 84-90 which of course have a different interior and door panel but the 89's don't have the tab. The car I am installing them on is a VERY early production 90 ZR-1. I wonder if they could have used 89's on the 90 and if that is even possible... My 95 seems to have the foldable tabs but the catalog shows the same number for 90-96? The photo of me pointing to the seal is from my 1995. Also, the master GM catalog shows a specific part# for 90-91 passenger side seal.
Chris------
In this case, I doubt that the 1989 parts were used for 1990.
You didn't say what the part numbers are for the NOS seals you have.In Appreciation of John Hinckley- Top
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Re: Help with C4 inner window sweep details and installation
Chris------
The GM #10086110 is the part number originally used for your application. However, it is possible that it changed in some way without a change in part number.
The GM #10199731 is NOT the original part number used for your application. It is SERVICE-only for 1990. GM instructs that an additional hole has to be drilled to use it. The original part used for your application was GM #10086109.
Over time, parts even of the original part number may change in certain ways. Nevertheless, GM considers them serviceable for all the applications cataloged.In Appreciation of John Hinckley- Top
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Re: Help with C4 inner window sweep details and installation
Thanks, my catalog didn't say it was a superseded number , I saw the part about the one extra hole but the other holes don't exactly match either. The other issue is that the NCRS guide says the OE was stapled on? Mine were OE and riveted. Thanks again.- Top
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Re: Help with C4 inner window sweep details and installation
Chris------
It's easily possible that a change from stapling to riveting was made to the part without a change in part number. That kind of a change would usually not result in a part number change.In Appreciation of John Hinckley- Top
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