Question about 2003 Oldsmobile Alero

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2003 olds alero rear windoe defogger

Hello

the rear window defogger will not stay on.
there is power to the switch and to the rear window.
the fuses seem ok

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  • 2 more comments 
  • cfarmer_4 Nov 19, 2008

    My 1999 Oldsmobile Alero rear window defogger light switch comes on, but there is no circuit to the window.

  • Anonymous Mar 13, 2014

    1999 4runner rear window and defogger not working

  • Anonymous Mar 26, 2014

    ignition switch in run position no power to starter, radio, wipers, rear window defogger, dash lights

  • Anonymous Mar 29, 2014

    all fuse are good , window would open all last year but now they don't

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  • Oldsmobile Master
  • 2,039 Answers

The rear passager panel the one that cover the side rear window there a relay connector in there that were the power to window go that defectif that gonna FIXYA our post thank you pierre

Posted on Jul 06, 2008

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Posted on Jan 02, 2017

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1 Answer

I have a 2002 alero. Need to know where to plug in the radio antenna.


THE OLDSMOBILE ALERO DONT HAVE A EXTERNAL ANTENNA MAST. THE OLDS ALERO HAVE WIRE GRID ANTENNA INCORPORATED INTO THE DEFOGGER GRID IN THE REAR WINDOW.THE GRID ANTENNA HAVE A REAR WINDOW ANTENNA MODULE MOUNTED BEHIND TOP OF THE REAR SEAT BACK. THE RADIO ANTENNA CABLE GOES TO ANTENNA MODULE LOCATED TOP OF THE REAR SEAT BACK.

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My oldsmobile Alero 2003 the rear window defroster does not work power to the switch but does not work on window


if no power from switch to back window, then it has to be the switch. if there is power to window, then it is in the back window defroster grid. its a possibility you have a bad wire or fuse, but check out power to back window first. have a good one !!

Dec 17, 2010 | 2003 Oldsmobile Alero

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I have an '03 Olds Alero and the rear defrost is not working...replaced the relay....switch lights up and continuity is good across the grid. I put the relay in both ways..not knowing if it makes a...


The relay can go in either way--no problem. The relay runs off 2 different fuses--one to power the relay itself and one to power the defogger. Make sure both fuses 33 and 46 in the engine compartmet fuse box are good.
Next, have someone listen to the relay while you turn on the defogger to see if it's clicking. If it isn't clicking, the problem is before the relay--probably in the control panel.
If the relay is clicking, the problem may be with the antenna amplifier (radio borrows the defogger grid to improve reception). Not sure where that module is but would guess it's in the right pillar by the passenger's fuse box. If you can find it, check continuity across the 2 black leads. Also verify the back side of the defogger is getting it's ground.
Please let me know if you have more questions.

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Nov 02, 2010 | 2003 Oldsmobile Alero

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Rear window defogger dont work replaced relay & fuse still dont work


REAR WINDOW DEFOGGER SWITCH IS BAD OR YOUR REAR WINDOW HAS A BROKEN PLACE IN THE GRID.

Nov 01, 2009 | 1999 Oldsmobile Alero

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Rear defrost on olds alero


Remove the interior panel next to the rear window on the passenger side. There should be a small black box (3"x3") bolted there. This box sends power to the rear defogger and carries the signals from teh integrated FM antenna. Often, the end of the plug fries and stops the defoggers from working while the radio has no problems.

The plug into the box is usually melted. It may look like it can be soldered and hardwired to work again, but more often than not the box is fried too. You can get them on the cheap from a JY or get them through GM.

Jul 13, 2009 | 1999 Oldsmobile Alero

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There's a junction box behind passenger rear door that has 2 wires that are joined from the front and control the rear defroster and radio antenna.

Mar 09, 2009 | 2003 Oldsmobile Alero

1 Answer

Rear window defogger stopped working


More than likely something has scratched the film that heats up to do the defrosting, Look to make sure it has both wires attached, and use either a test light (make one out of a 12volt bulb and wire if you do not have one.) See if you have electricity to the wires at the ends. If you do, you have a break in the film. You should be able to see where it is broken or scratched. There is an after market repair kit for this, that is not really expensive.

Dec 21, 2008 | 2003 Oldsmobile Alero

1 Answer

2002 Alero defogger


A common thing to fial on these- assumning the grid is ok, and wires are still attched to grid, is the rear def / antenna module. It is behind rt. rear quarter trim panel. The modules burn up, and also melt the connector. the module and connector would need to be replaced.

Dec 06, 2008 | 2003 Oldsmobile Alero

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