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I have a set of 88 GTA seats. I cannot figure out the airlines.

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Old Jul 10, 2022 | 05:57 AM
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I have a set of 88 GTA seats. I cannot figure out the airlines.

Does anyone have a photo of the bottom of the seats? I bought a factory harness it has one large line that connects the drivers and passengers seat. That said my drivers seat has a skinny line that is connected to a T!
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Old Jul 10, 2022 | 03:26 PM
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Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

You may have a 4th gen harness. Third gen harness and airline are separate pieces, 4th gen has the airline wrapped in the harness. Also 3rd gen airline is the same diameter as the airlines on the seats, something like 1/4.
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Old Jul 12, 2022 | 12:32 PM
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Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

I think I am missing a tube on the drivers seat that crosses over to the other side. The first passsenger is the passenger side it will hook upo to my seat harness air line. The drivers seat end is missing. I also do not know where to attach these two tubes that join at the T-fitting. Here are some pics


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Old Jul 13, 2022 | 05:07 PM
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Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

Does this help? I took my '88 seats apart a while ago for cleaning. And some of the springs were broken due to rust.




Last edited by fuchs; Jul 13, 2022 at 05:15 PM.
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Old Jul 13, 2022 | 05:14 PM
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Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

this appears to be the passenger seat.

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Old Jul 13, 2022 | 08:17 PM
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From: Oyth
Car: 89RS vert
Engine: Erod
Transmission: 4L65e
Axle/Gears: BW, 3.27
Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

Originally Posted by ng8264723
I think I am missing a tube on the drivers seat that crosses over to the other side. The first passsenger is the passenger side it will hook upo to my seat harness air line. The drivers seat end is missing. I also do not know where to attach these two tubes that join at the T-fitting. Here are some pics
Yes, probably missing the airline that crosses over to the pass side? It be about 3-4ft long, same dia. and not in the harness. It would have the male ends that attach to the fitting/s pictured. If you cant tell from fuchs pics and IIRC, the yellow arrow goes to the pump. Red should have a fitting like in your first pic. This is where the crossover line would attach to pump air to the pass side. On the T the center lines goes to the "diverter valve" (or manifold, i forget the name), that metal box. From that "manifold" are i think 3 other lines (2 for the side bladders, 1 for the lower back. Which one gets air depends on which part of the switch you press.

If the pass switch is used, air simply goes straight across the T over to the other bladder/s. Pass seat should have its own "manifold/diverter".


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Old Jul 14, 2022 | 09:58 AM
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Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

That's exactly what I needed! You guys are awesome!!!!

I actually have the wire harness with the large air tube that connects the seat. Looks like my seat is missing the quick connect though. I wonder where I could find one.
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Old Jul 14, 2022 | 11:44 AM
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Axle/Gears: BW, 3.27
Re: I have a set of 88 GTA seats. I cannot figure out the airlines.

Probably the classifieds on this forum is your best bet, maybe ebay. Nobody makes em, but its just a fitting w/ an o-ring.
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