Rear driver door doesn't lock
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Rear driver door doesn't lock in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Hello there, once again I've run into a lil problem that's not so much bad but rather annoying to me ...
  1. #1
    956Caddy's Avatar
    956Caddy is offline Cadillac Owners Fanatic
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    Rear driver door doesn't lock

    Hello there, once again I've run into a lil problem that's not so much bad but rather annoying to me . my problem is that the rear drivers door will not lock with with key fob or switch on doors. I've checked the fuses. What could it be?

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  3. #2
    Blayne's Avatar
    Blayne is offline Cadillac Owners Connoisseur
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    It could be the solenoid for that door. You may have to take the door apart and take a look at it.

  4. #3
    Kingoftypos is online now Cadillac Owners Master
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    Does the window work? By using either its own switch or the drivers switch?

    KOT

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    956Caddy's Avatar
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    Yes the window switch works on door itself and on drivers door. The window will roll down like normal just not lock itself

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    CTSUK's Avatar
    CTSUK is offline Cadillac Owners Enthusiast
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    Re: Rear driver door doesn't lock

    Door lock solenoid or connector to its come loose

  7. #6
    956Caddy's Avatar
    956Caddy is offline Cadillac Owners Fanatic
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    Is the solenoid the black Motorola box in door panel? Sorry I'm pretty new to electronic like this.

  8. #7
    Kingoftypos is online now Cadillac Owners Master
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    Quote Originally Posted by 956Caddy
    Is the solenoid the black Motorola box in door panel? Sorry I'm pretty new to electronic like this.
    There's a Motorola box in there? Interesting, do you have any black SUVs following you from time to time?

    KOT

  9. #8
    956Caddy's Avatar
    956Caddy is offline Cadillac Owners Fanatic
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    Haha no, also yeah the only reason I know its Motorola is cause I've had to replace my rear window regulator on that same door a while back. And I looked at the black control box, I think,

  10. #9
    956Caddy's Avatar
    956Caddy is offline Cadillac Owners Fanatic
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    Okay just finished taking apart the door disconnected and reconnected the three wires going into Motorola black box. And also I'm guessing the solenoid is the actual part that controls the lock? I wd-40 it cause it was sticking and it helped a lil but its wearing out.

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