'99 Suburban Left Rear Window Stopped Working

Discussion in 'Interior' started by 510man, Jul 6, 2019.

  1. 510man

    510man TYF Newbie

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    The left rear window on my '99 Suburban stopped working. It's an old truck so I replaced the window motor. Worked great when done......and then didn't work an hour later. Step 2, I replaced the rear door switch. No change.

    This was relatively cheap guessing. Now I'm to the driver's door switch, which is more expensive to replace. Before I do that, how do I trouble shoot correctly?

    I have power and ground at the rear door switch. I have continuity through the switch pins when tested with an ohm meter.

    Where does the door ground to the body? In the B pillar between the doors? I ask because I could have ground when testing with a volt meter but it may not be good enough to carry a load.
     
  2. Big Mama

    Big Mama Full Access Member

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    Did you try swapping a working switch?
     
  3. 510man

    510man TYF Newbie

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    I bought a new left door switch. No change. I don't have an extra driver's door set of switches to try. I'd have to buy it. I'm trying to make sure that is the problem since that switch is a spendy part swap test.
     
  4. Big Mama

    Big Mama Full Access Member

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    Sorry, are the switches on the other doors the same? I have an 07 and they are but I can’t recall if yours are? Are you able to test the motor?
     
  5. 510man

    510man TYF Newbie

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    The two rear door switches are the same. The front doors are different. The motor is new and worked fine after I installed it. Came back to the truck an hour later and nothing.
     
  6. Big Mama

    Big Mama Full Access Member

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    Right but since it’s not working anymore try the same diagnostics you did at first. My switches are the same on 3 doors so popping one out to test the other is quick and easy.
     
  7. east302

    east302 Full Access Member

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    Here are the diagnostics for a window inoperative from both the window switch and the master switch. Maybe it will help. This is for a 98.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]


    Sent from my iPhone using Tapatalk
     
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  8. Big Mama

    Big Mama Full Access Member

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  9. NathanJax

    NathanJax Vacation Nathan Staff Member Administrator Supporting Member

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    Done
     
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