OK, short history: My 6 way power seats, don't go forward or back, never have since I've owned the car. Other directions were ok and the seat is in the perfect spot for me, so no big rush to fix.

Maybe 8 months ago, I grabbed a good second hand gearbox from Jason. The reason being, if I undo everything to fix it and need to get parts, it becomes a second job or a much longer down time. The joys of having a Cadillac on the other side of the planet.

So, two days ago, I get ready to remove the little 6 way seat gearbox. When I went to lift the seat up to gain access to the bolts, it now doesn't go in any direction. I popped the switch assembly off the door trim and it appears I have no power going to the seat controller. (Yes Anders and Clovis, i had the ignition on) LOL.

Ran a test light over the fuses.... all good. Everything else on the switch block works fine as well

I seam to recall, our cars can break the wires in the door jambs, is that correct?

Would you look there first or what is the best, first point of attack? ( I hate auto electrics)

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That's why the wire should go straight to the seat and not through the door. But you have the fancy car...

Btw, you should ask your friend the car electrician. Doh, you moved away from him!!!! Your mistake.

Time to get the Mad Scientist a plane ticket so he can thaw and also sort it the electrical stuff in your car.

That seat must be uncomfortable.....

Mine goes up the other way, but then again, mine is the "fancy car." :-) LOL


I knew something was a bit off. But they never said anything at the vehicle inspection.

Thanks for telling.

Hey Kevin, the wires break in the door jamb. After 50+ years they have gotten brittle and break from flexing in the same spot over & over when the door is open. Locate the rubber boot in the door jamb (assuming it's still there). Remove it carefully to expose the wires & go from there. I took pictures from when I repaired mine. In my case the windows would not work sometimes so, Anders, it could even affect the "un-fancy" series 62 (assuming you don't have manual crank windows UGH!) 

Hmmm, thanks Kurt.

I might have a look and suss that out. It would appear the rubber boot comes away easy enough and the door trim can stay on....yeah?

Yes. If there are only broken wires in that area, there is no door disassembly required. The worst part is having to work in that tight area in the door jam. Not too bad though. I don't think I even had any ugly words for Bertha that day : )

I've been out and has a look, yeah, really easy once I actually looked at it and undid the bits and pieces.

The rubber cover was in great condition, off she came and low and behold, there is a broken red wire.

Yeehaa.... I haven't been this excited since I was a little girl. I squealed, I jumped around and then got stuck into fixing the broken red wire.

Another white one was a bit howdy doody, so did that as well.

Battery lead back on, ignition on and NOTHIN.... still no seat movement.

Shit... shit shit shit. until I remembered, I did disconnect the seat motor harness connector on Saturday when I was going to pull the motor out anyway.

Harness on, power on and the seat goes up and tilts.

Still doesn't go forwards or back, but that's cool, now I can set about doing the motor.

I also found the vacuum lines were a bit second hand too, so I'll slip into town shortly and get a few bits and do that while i'm at it.

Thanks Kurt, it was up the attic somewhere about these wires breaking, but I couldn't recall for sure. (Love ya work)

I drew a blank on some stuff for the vacuum lines today, but was put onto a place that can help me.

Will zip in there first thing tomorrow morning and quickly sort it.

By 11am, I've got to start prepping for a colonoscopy early the next day. NOT LOOKING FARWARD to that either.

It will give those two Northern Knuckleheads something to laugh about. Yes, Anders and Clovis, i'm talking about you two misfits. :-) LOL 

Kevin, Other than breaks in the wires from switch in arm rest to seat motor-transmission-relay assembly I would check transmission, circuit breaker and seat ground. If you hear something at the motor transmission when you move the seat switch in any direction, the old transmission may just be so caked up with dried grease none of the 3 solenoids are working and you will just have to remove and clean and/or replace with other transmission.
If you do not hear anything the relay at the fuse box and ground wire for the seat would be the next 2 items I would checked. Cars with power seats use a 40 amp circuit breaker instead of the fuse as seen in upper right of picture below. It sounds like you may have already tested the circuit breaker.

The final item to check would be the ground wire that establishes ground between the seat frame and car body. These are usually a heavy gauge blue wire that screws into the seat frame via a Phillips screw at seat frame, and attacked to to floor board at a seat rail to body mounting bolts. For most of the bench seats I have seen these are on the right side and attach to floor at right rear inner seat rail frame bolt.  Below is a picture with the seat frame ground circuit with arrow pointing to seat rail frame location:

Hi Jason, I now have some movement from the seat motor and I also have a noise of it trying to work in each direction available.

Now its just a matter of fitting the seat motor I got off you ages ago.

Once that's in, I'll open up the old one and sort it out as a spare.



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