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Old 09-02-2015, 10:06 AM   #1
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Default Lucerne door will not open

2006 Buick Lucerne

Rear door will not open from the inside or out. It feels like something became unattached from the handle. There is no resistance when pulling on the handle.

What has failed? How do I get the interior panel off with the door closed?
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Old 09-02-2015, 10:33 AM   #2
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Open other back door take out bottom of the back seat it might give you enough room to get the panel off.
If not you may need to take out the back of the seat

Lets hope no one says {pull the door lock up}
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Old 09-02-2015, 12:10 PM   #3
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Haha, true.

The lock goes up and down just fine with the locking/unlocking from the fob, it just feels like their is nothing attached to the handles.
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Old 09-03-2015, 12:40 AM   #4
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I should have said first try a slim jim with the window up or down.
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Old 09-03-2015, 02:38 AM   #5
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If there is a way to remove the rubber rain gasket at the bottom of the window, you might be able to get a peek inside at the door latch mechanism.

In this situation, I would journey to a local salvage yard and "practice" removing door panels and rain gaskets from junk cars. Gain a little knowledge like a gorilla and then go back home and finesse the door panel off.
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Old 09-03-2015, 09:20 PM   #6
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i support the junkyard trial and error statement just dont tell em what youre there to do lol
Also i know this pain ive had to do this exact thing with my suburbans rear passenger door twice..new clip in the handle that holds the rod solved that
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Old 09-04-2015, 09:57 AM   #7
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If you can't get the inner door trim panel off by removing the rear seat, I would remove the opposite door trim panel to observe how the latch mechanism works and where everything is located. The inner and outer door release handles are connected to an arm on the door lock that moves to unlatch the door. Once you see exactly where that arm is, and which direction it moves, you can practice activating it by slipping a coat hanger (or whatever works) down from the window interface. With the door panel off you can observe how it works. Once you can do it on that door, try it on the other.

The odd thing is the inner and outer door release handles use separate rods to activate the latch. The fact neither is working might be an indication there is a bigger problem than a rod popping loose.
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Old 09-05-2015, 08:37 AM   #8
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By removing your other panel, as 2kg4u suggested, you will get an idea of how the linkages and latch work........


two things are possible here:

the linkages are disconnected or the latch is rusted in the closed position......

Here is one thing to try......you say the inner and outer door handles have no "resistance".....just open the passenger rear door.....now, with the door open, is the resistance of the handles the same as the other side? If it is, the latch mechanism could be rusted shut by water......so with the door in the unlock position, have someone on the outside of the door(holding the outside handle in the open position), to catch it, as you give a few good thrusts against the rear of the door from the inside......you want that guy on the outside to catch the door or you may go flying if it opens....

If that doesn't work, you get the panel off, and all linkages are intact, then you are going to have to get some PB Blaster in the door and soak that latch as much as possible while repeatedly moving all linkages.....may have to do this several times, and let it soak in....
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Old 09-05-2015, 09:19 AM   #9
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