86-gn power seat motor and transmittion

[gmaltese]

hello all my 86-gn power seat on the drivers side is broken, the motor runs when you push the switchs, so i looked under the seat and saw part of the power seat transmittion broken (color is yellowish) i was told that the 86 and 87 was different. is this so? also id like to know where i can buy a new power seat transmittion? thanks

[Grumpy]

I have both I think ... Ill dig around tomorrow

[tony moore]

are you sure it's not the coupling from motor to trans? thats what happend to mine.

[gmaltese]

it's hard to say without takeing the seat off, all i know is the yellowish plastic is crumbling apart

[ScottyRegal]

gbodyparts.com sells them new for our seats. they r expensive, but i bet theyd last jsut as long as the original one did.

[gmaltese]

not change the thread but.. scotty you have a gs that runs 12's? wow, can you post the pic of it? thanks.........

and now back to our regular thread

[ScottyRegal]

had....until a drunk driver hit me in 04.
but thats nothing, now with the turbo conversion kits, these things r doin high 11's my pic is right there under my user name...but i dunno how to post a pic of it, i can e mail u a pic if ya want..whats ur e mail.

[tony moore]

Originally Posted by gmaltese

it's hard to say without takeing the seat off, all i know is the yellowish plastic is crumbling apart

definatly not the coupler!

[turbofish38]

You need what they call the transmission. New ones are discontinued. And used ones are hard to come by. After about 10-15 years the plastic cracks on them like yours or the solenoid inside craps out. If I was you I'd try to find the complete assembly from an 87 with the three seperate motors. G-body units can be hard to find but you can use one from a B-C-D body in a jamb. The only difference is that the full size cars sit a little lower on the floor. Make sure you use the correct wire harness and switch with the newer style.

[gmaltese]

grumpy said he might have one,
turbofish38.. i was told you work with parts? is that true?

[turbofish38]

Ya, I work in the parts dept for a large Chevrolet dealer. Been doing it for almost 28 years and have been into the G-body since they redesigned them in 1978. Probally nothing I haven't done to these cars. Any questions fell free to post a thread.

[GM Seat Guy]

Howdy Folks,
I'm the guy that made the "NEW Power seat transmission case".
Fisher body used nylon to make the original. 20 + years later plastics have come a long, long way. I use "partially aromatic poly-amides with 50% fiberglass fill. They are "bullet proof". Really strong. I also re-engineered it quite a bit, just to be sure. I believe it will be around long after we are gone.
For these cars, It lists at 395.00. 8 years ago when it went obsolete it was 366.00. Heres the trade off. My replacement can be installed with a 9/32 nut driver and socket wrench in as little as 10 or 15 minuets. If the seat is forward and down it takes a bit longer. Be patient.
Otherwise, you can try to convert to the newer 3 motor requiring a new switch, wiring, questionable mounting and possible trips back to the bone yard.
Spend your time fixing your car or driving it, It's up to you.
My cases are lifetime guaranteed and I sell them completely rebuilt / exchange. 30 day no question refund and 1 year on internal parts.
I also have couplers available.

Thanks and Happy New Year to All,
GM Seat Guy
Check out Welcome to ProperParts.com! Home of the 6-way Adjustable Power Seat Transmission Motor: Part Numbers: 20225150, 20113446 and UB-39167

[turbofish38]

Stupid question? Can I buy the housing and install/transfer my parts myself and if so what is the price of it?

[toofastforyou]

"gmaltese", If I were you, I'd call Brian at GBodyParts.com Online. He sells new power seats transmissions and they're a direct replacement for your '86 track. just remove your damaged transmission and golt the new one in it's place and that's it!...nothing else to do...It's true that '86 and '87 tracks are different. The '86 like you have has one motor mated to a plastic transmission and steel tracks and the '87's have three separate motors and some aluminium tracks. Whole tracks will fit in either car year, but parts from either tracks are not interchangeable.

Claude

[turbofish38]

Upgrading Power Seat Motors

Here's a thread on how I avoided this problem altogether. If I had my druthers I would upgrade with the complete 3 motor 87 seat track. My conversion makes more sense than rebuilding the plastic motor units. Less plastic to break in the future anyway.Those gears and the coupler aint metal.$100 core charge? Heck I buy complete assemblies down at U-Pull-It for $20. Even less when they have a sale.

BTW when your plastic motor track breaks it's a lot easier to fix it when you pull the seat out of the car. How do you do that when the damn thing is busted,you say? The center gearnut is the foward-backward unit. It has the long cables going into it. Just remove the cables and stick a small slotted screw driver into the gearnut and turn it by hand. It's tedious but at least you can move the seat away from the mounting studs to pull the seat out. I made my own quicky tool by using the small blade from one of those 10 in 1 universal tools. I chucked the blade into my cordless drill. All I have to do is push the blade into the gearnut and push a button.