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Posted on Sep 21, 2010
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My 1985 gmc k1500 truck has the electric door locks and electric windows and they do not work. I checked the fuses and there all fine.

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Donald DCruz

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  • GMC Master 17,130 Answers
  • Posted on Sep 21, 2010
Donald DCruz
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Joined: Jun 24, 2010
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Possible that the main processor controller is faulty and unless the main microprocessor works none of the fucntions will be in control/
So if you are able to check the processor oscillations, check and confirm. make sure the +B

  • Donald DCruz
    Donald DCruz Sep 21, 2010

    The B to the processor must be present

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Nothing works Passenger door . 2003 GMC Sierra. no mirror, PL or window.checked fuses.tried new controls. I utubed a guy said disconnect battery ground , will reset .I did and worked.until I moved it.

Power windows don't use fuse's , has circuit breakers
• PWR WDO CB 25A (fuse block) (System power for left and right windows 2-door vehicles. System power for LF and LR windows 4-door vehicles)
• PWR WDO CB 25A (IP wiring harness junction block) (System power for RF and RR windows 4-door vehicles)

Door Lock System Components
The power door lock system consists of the following components:
• The driver door module (DDM)
• The passenger door module (PDM)
• The body control module (BCM)
• The driver information center (DIC)
• The rear door lock switch
• The door lock relay
• The door unlock relay
• The liftgate lock relay--utility vehicles with liftgate only
• The reversible door lock actuators in each of the doors and liftgate
• LOCKS 20A fuse (rear lock/unlock relay supply voltage)
• ECC 10A fuse (liftgate lock relay supply voltage)
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My 2003 gmc Sierra driver side door panel quit working, locks quit, seat heater quit, windows quit, passenger side works fine

The most likely culprit is your driver's door control module... it's built into the driver's window switches. Double-check all your fuses before replacing any parts.
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I bought a 1985 gmc suburban 6.2 diesel and the power windows do not work but i have power to the locks and they work.

I'm pretty sure the locks and windows are on two different circuits.
A mechanic would check the drivers door master switch for power and ground first.
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The brake lights and tail lights to my 85 GMC Sierra Classic are not working, but my headlights work, what can the problem be?

Rear ground wire is rusty or dirty or fuse is blown front and rear lights are on a separate circuit and fuse.
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Driver side door, electric windows and lock will not work.

If windows still work from other door switches, then fuse is good, if not check fuse, if they do replace master window switch, shorted out with the water.
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Remote door locks

Most electric door locks will be able to be unlocked remotely. You can also take your VIN to the dealer, and they should be able to decode it for you and let you know if it is on your truck.
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Window controls on drivers door panel not working

Check both under hood and dash fuse panels. It says 99 k1500 is that correct ? if no luck there, get back to us.
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1985 gmc sierra light issue

The most simple solution to this Problem Which is VERY Common on this model Truck (Had a 85' Chevy) is to get an Electrical Tester from any Auto Parts Store or Wal-Mart and Unplug the Headlights one at a time and check the Leads in the Harness. If they test ok then go to the Fuse Box and Check there after you Pull out the fuse and reattach the Light Harness to the Bulb. There should be a Short under the Dash on the Stearing Column. It is a Task to fix on your own But, Can be done. I went so far as to Install a GT Grant Steering Wheel and REwired the Horn to solve that Problem. You could have messed up the Harness for these when you adjusted the Clutch But, These wires only go through the FireWall and Not under the Truck. Get a Tester and start Pokin around. Any good Parts Shop will be able to tell you how to work the Tester and there are all Kinds of MANY Price Ranges. Just let them know what the Problem is and they will know which one you need!
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