Power Seat Malfunction

[Paul Fithian]

I recently discovered my 10-way power drivers seat no longer goes backward. Seems like the tracks are "offset", you can feel it twist and bind as it tries to move back and then stops. If I loosen the 4 mounting bolts, it goes back as normal.

Vehicle has over 255,000 miles, maybe worn out seat tracks? Any advice other than replacing it with a used one from the junkyard?

 

[Bazz270]

Motor shaft (one of them) or plastic gear drive is broken.
Not sold separately.
Unfortunately ,your only option is to replace the whole seat base

 

[Fbird]

junkyard. FWIW you can remove the plastic "worm nut" (best description I can give) Obvious choice is to steal 2 from the PASSENGER side seat as those would not be used near as much. I'm doing this right now as my seat has about 1/4" slop in it. You hit the brakes...then the seat moves you forward another 1/4 inch...lol

 

[Bazz270]

junkyard. FWIW you can remove the plastic "worm nut" (best description I can give) Obvious choice is to steal 2 from the PASSENGER side seat as those would not be used near as much. I'm doing this right now as my seat has about 1/4" slop in it. You hit the brakes...then the seat moves you forward another 1/4 inch...lol

Mine dont have the passenger powerseats to take the gear off

Bought ( used )on ebay for 200 bucks

 

[J_C]

Grease it up good before installation, poor/old lubrication might have been why the original failed.

 

[Paul Fithian]

I pulled this beauty out of a local wreck for $60. I'll strip it down and clean it up, plan to use my cushions and seat covers with this new frame.

Vehicle was side-swiped on the driver side, no air bags deployed on this wreck.

 

[Paul Fithian]

Had a chance to strip down the junkyard seat, clean it up, and reinstall with my upholstery.

Testing showed the seat rear raise/lower mechanism was not working. Motor hums but no movement. doesn't look like there is a way to replace any components in the seat assembly, many large pivot pins with swaged ends. Cable for lumbar support is also broken, motor on it works when actuated.

All good on seat installation, foward/back and recline are now smoother, no restraint system error codes.

 

[Paul Fithian]

Played around a bit to come up with a way to repair the lumbar and rear raise/lower actions on the replacement junkyard seat.

The seat bottom/back can be removed from the adjuster base with four 15 mm nuts and a few connectors:

I was able to find and order an NOS lumbar support 7L2Z-7865500-C, the old one broken one had shattered planetary gears like others have reported:

Found this site Two Men One Garage | Aftermarket Power Seat Repair Parts that offers replacement gears to fix the rear up/down mechanism, ordered one as well. Here's what the working one looks like on the old seat:

 

[Bazz270]

Nice link about the replacement parts! Thanks!

 

[Paul Fithian]

I was able to complete repair of the raise/lower actuator mechanisms using parts from Two Men One Garage. The rear raise/lower actuator had a broken gear:

Both front and rear actuators received new steel gears from the above source:

All working well now, see


I posted a separate thread on fixing the lumbar supports, see Lumbar Fix

 

[FrankInDE]

Thanks so much for the parts link. It'll save me a ton of money and hassle.