Question about 2002 Oldsmobile Bravada

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Which fuse controls the rear window defogger on a 2002 Olds Bravada? I know there are two different fuse panels, but which one is it?

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  • Ted Wolf Jan 13, 2009

    I have checked in the owners manual and there is no listing for it. There is also no map on the cover of either of the fuse panels.



    The problem is that the rear window defogger does not function. This started when the tab on the passenger side fell off one day. The deal says they 're-attached' it, but I am starting to really wonder. I was just looking to check the fuse before I went and tried to find a repair kit for the tab.

  • gerry bissi May 11, 2010

    I meant to say Owner Manual or the fuse panel cover.

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  • Oldsmobile Master
  • 4,369 Answers

This repair may look good but is not passing the high current needed to operate the window. It must be soldered, not glued. Very few people do a good job at this repair. Have it resoldered in a location next the the spot it came off of. It needs to be on the copper bus anywhere.

gerry

Posted on Jan 18, 2009

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Wiring diagram for rear window defogger 2005 silverado from dash to deffoger


Rear Window Defogger System Components
The rear window defogger system consist of the following components:
• HVAC control module
• Body control module (BCM)
• DEFOG relay
• Rear window defogger grid
Rear Window Defogger Operation
When you turn the ignition to the ON position, ignition voltage is supplied to the DEFOG relay coil. Battery positive voltage is supplied at all times to the DEFOG relay switched input. When the rear window defogger switch is depressed, the HVAC control module illuminates the rear window defogger indicator and sends a class 2 message to the BCM. The BCM energizes the DEFOG relay by grounding the control circuit of the relay. This allows battery positive voltage from the relay switched input through the switch contacts and out the relay switched output to the rear window defogger. Ground for the rear window defogger is provided by G306 or G390 (crew cab).
When you turn ON the ignition and press the rear window defogger switch for the first time, the defogger cycle lasts 10 minutes. Further operation results in 5 minute defogger cycles.

Do you know what your messing with ? What's the problem ?

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Why is my rear defrost not working


Switch, fuse or maybe the wiring to the window has come loose or off, happens alot, kits are available at local auto parts stores...
I hope that helps...

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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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1 Answer

What fuse runs the rar window defogger? I cant find one labeled for that in either fuse box


The rear defogger is controlled by the Liftgate Module and the fuse for that is located in the fuse panel under the rear seat at location #3 (LGM# 2)

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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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1 Answer

Which fuse is for the rear window defogger on a 2002 Olds Bravada?


it should be listed in your wner manual. It is a big one because rear defrost takes a lot of amps - like 20 amps.

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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.

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1 Answer

2001 Sienna rear window defogger doesn't work


There are 3 fuses that control the rear defogger, and 1 relay

The fuses are: 10 amp HEATER, 10 amp MIRROR-HEATER; under the dash
The 30 amp DEF fuse is in the fuse box under the hood
The relay is the DEFOGGER relay, which is on the back side of the fuse panel under the dash

Also, check for a loose wire on the defroster grid (on the back glass), this is the most common problem.


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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

Jul 06, 2008 | 2003 Oldsmobile Alero

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