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  1. #1
    Jr. Apprentice m0j0TX's Avatar
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    Jun 2009
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    McKinney, TX
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    17

    Default Passenger rear door won't lock, at all, on 2004 Silverado crew cab

    I have a 2004 Silverado Z71 crew cab, and also a young son. We have always had the "safety" lock on the back doors so that they cannot be opened from the inside. This weekend we were going somewhere without the boy, and an adult was riding in the back seat, and it was a pain to have to keep opening the door for them. I turned off the "safety" lock so that one door could be opened from the inside, but then noticed that the door would no longer lock....AT ALL.

    The other doors lock/unlock just fine with both the remote fob and manually hitting the power lock button or sliding the manual lock back and forth. This one door seems to be "stuck" unlocked. I cannot even lock it manually, since it refuses to move. Since I can't lock it manually, I don't THINK it's an electrical issue, but then again I'm certainly no expert.

    Any ideas on what the problem is? I'd prefer to fix it myself if it's something easy, but if it's involved I will have to take it in somewhere tomorrow because I don't want to leave my truck sitting around with one door essentially unlocked all the time. We have had issues at my work with cars being broken into. I don't want someone ransacking my truck, even if the alarm does go off when the unlocked door is opened.

    Any tips would be appreciated! Thanks!
    m0j0TX -- McKinney, Texas
    2004 Chevy Silverado 1500 Crew Cab Z71 4WD

  2. #2

    Default

    You wont really know what the issue is until you pop the door panel off. The lock is an electrical part but there is a metal rod that runs from the locking mech to the door handle. Sounds like that works fine. The other part of the locking mech moves the small rod that has the plastic trim cap that you push up and down to lock the door. Sounds like your saying that doesnt move?

    You can look to see if any thing has come off, but If its like mine, you will be replacing the locking mech. Its easy to do, the part is around $100.00.

    But, I would open it up and look to see if its anything simple.


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  3. #3
    Jr. Apprentice m0j0TX's Avatar
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    Default

    I took the rear interior panel off, after I finally figured out what I was missing. (I didn't immediately spot the screw under the arm rest.)

    The rod looks okay, so I think you're right, I think it's the locking mechanism.

    - - - Updated - - -

    Thanks a buch, any tips on how to remove the locking mechnism? I see some largish Torx bolts around the door latch. Do I just remove those?

    I'm not a mechanical idiot, but I haven't had to make this particular repair before, and I don't want to waste a lot of time on trial and error or break something else in the process.

    Given that it's Sunday and I can't get a part until tomorrow anyway, I'm trying to plan ahead so I can fix it as soon as possible in the morning.

    Also, would you recommend replacing that rubbery plastic sheet behind the door panel? Or just glue it back down somehow?
    m0j0TX -- McKinney, Texas
    2004 Chevy Silverado 1500 Crew Cab Z71 4WD

  4. #4

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    Yup, just remove the torx bolt(s). I dont remember if I had the plastic on mine - probably did - I didnt replace it.


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