Front Seats Won't Recline - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-30-2005, 08:00 PM   #11
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Quote:
Originally Posted by Merlin 91/97
I've got the same problem on my 91...... anyone have any diagrams as to howto check those two possible options?
I'm sure echo or someone will come through with details of how to check it out. Until then...I'll be here refreshing the page hoping for good news.
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Old 12-31-2005, 03:22 PM   #12
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Hi everyone remember me? Been busy.. busy busy

The one thing that I wonder about is both seats are doing the same thing. It'* doubtful both motors could be having a problem on both seats.
Here'* the underneath of a seat.


We can see the motors, and the green and blue cables..those are the drive cables. The motor drives the cable and the cable drives the actuator gearnut. I would think maybe the switch was an issue, since you guys say you can hear something trying..it can't be the problem.

If possible I would test power from the switch, through the relay and right to the motor. That will resolve if power is getting there or stopping at a bad relay. Then disconnect the drive cable and see if the motor turns it freely. From there all that would be left is the actuator gearnut....but like I said..since both do it....I suspect something that controls both seats. Therefore I'd think electrical before the motors.
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Old 01-01-2006, 05:13 AM   #13
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Just so I can research it a bit further, I'd like to clarify some things.

The recline function does not work in either direction on both seats?
Are clicks heard upon pressing the recline switch in either direction with L/R in either position?
Failures include 91-94 in this thread?

The passenger'* seats in both my 90 and 93 would recline down but not back up when I first purchased them. A light tap or two on the recline motor while pressing the switch solved the problem in both cases. Electrical motors can develop "dead spots" occasionally. The vibrations fron the tapping causes the motor to turn just enough to get it going. This is also how I corrected the RR power window motor in the 93 and a starter motor or two back in the day.

My thoughts however are similar to Bill'*. It'* not too likely that both recline motors failed at the same time. Once the above questions are clarified, I can dig into the book further. I can check both my 90 and 95 FSM but may want to take a peek at a 92 or 93 manual if available.
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Old 01-01-2006, 11:10 AM   #14
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Thanks Bil and Randy. The FSM doesn't give much in the way of description at all on component location.
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Old 01-01-2006, 01:37 PM   #15
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Ok, today I pulled the cables that run to the motors and the motors run just fine, but the cables won't turn when they are installed on the seat like something is jaming the gearing? Is there a way to lube the gears somewhere?
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Old 01-01-2006, 07:04 PM   #16
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Quote:
Originally Posted by randman1
Just so I can research it a bit further, I'd like to clarify some things.

The recline function does not work in either direction on both seats?
Are clicks heard upon pressing the recline switch in either direction with L/R in either position?
Failures include 91-94 in this thread?

The passenger'* seats in both my 90 and 93 would recline down but not back up when I first purchased them. A light tap or two on the recline motor while pressing the switch solved the problem in both cases. Electrical motors can develop "dead spots" occasionally. The vibrations fron the tapping causes the motor to turn just enough to get it going. This is also how I corrected the RR power window motor in the 93 and a starter motor or two back in the day.

My thoughts however are similar to Bill'*. It'* not too likely that both recline motors failed at the same time. Once the above questions are clarified, I can dig into the book further. I can check both my 90 and 95 FSM but may want to take a peek at a 92 or 93 manual if available.
First of all, I want to thank you Randman1 for choosing to lend your expertise to the matter at hand. It is much appreciated!

Everything you said is right. I cannot recline either seat in any direction. And yes, clicks are heard in either direction on either seat.

Thanks again for your help!

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Old 01-01-2006, 07:28 PM   #17
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Default Re: Front Seats Won't Recline

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Originally Posted by 94GreenSsei
I have a 94 ssei and the power seats work great, except for the recline feature on both seats. Any ideas or thoughts would be appreciated. Thanks!
Rent a cheap motel room instead.
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Old 01-01-2006, 07:38 PM   #18
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Default Re: Front Seats Won't Recline

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Originally Posted by Bob Dillon
Quote:
Originally Posted by 94GreenSsei
I have a 94 ssei and the power seats work great, except for the recline feature on both seats. Any ideas or thoughts would be appreciated. Thanks!
Rent a cheap motel room instead.
HAHA! Good one! My wife likes to sleep while I drive on long trips. So I need to fix this problem in a major way, because I don't want to have to listen to her mouth the whole way.
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Old 01-01-2006, 09:01 PM   #19
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Hmmmm. Motor operates in both (?) directions when cables are disconnected but doesn't operate in either direction when connected... Normally I would agree with you thinking it was a mechanical problem with the worm gear but I'm still not 100% convinced.

[thinking out loud]
If I recall correctly, there is a current sensing circuit in the seat control module. To verify this, simply adjust one of the seats forward all the way. You should hear a click of the relay upon pressing the switch to begin supplying voltage to the seat motor and then another when the relay de-energizes when the seat has reached the full forward travel. Although you still have the switch pressed, the seat has stopped and there is no electrical strain. This indicates a current sensing circuit in the seat module. This simply narrows the suspects to the seat module or both recline motors.
[/thinking out loud]

I tossed a power seat track a while back so I can't go down stairs and experiment. Boosty, can you see if there is a manual method for turning the worm gear or the threaded stud it connects to? Are you working tomorrow? Maybe we can play around with your seat(*)
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Old 03-23-2006, 11:21 AM   #20
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Just thought i'd drop my 2 cents. Same problem with my '94 SSEi. Both seats have full power for everything but the recline. Just makes some noise but won't move the seats. Anyone figure this out yet? The wierd thing is, i keep trying and every once in awhile, like maybe one try in two months, the seat starts moving forward and back just like normal! Would that be a loose connection or bad motor gear? hmm...
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