Question about 1998 Oldsmobile Aurora

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Only btm 1/2 of rear defrost works on 98 Aurora

When i turn on my rear defrost, the light comes on, but only the bottom 1/2 of the rear window defrosts. I do not see any scratches in any of the defrost lines. Is there a relay or a fuse for the upper 1/2 and one for the lower 1/2?

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Hopefully this will help, there is a fuse box under the back seat the one closest to the battery, there you will find that there are 2 fuses for the rear defrost try checking those out

Posted on Jan 14, 2009

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Rear window defroster not working

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"Just an FYI. The rear defroster issue is due to a bad Antenna Buffer Module / Antenna Module. The power to the rear defogger goes through a module that separates the antenna amplifier signal from the 12 volt power to the defogger. The defogger elements also act as the antenna. The module is behind the rear pillar right behind the rear passenger door. The inside plastic has to be gently pulled off, the seat needs to be folded down to get the lower part of the trim off. One screw at the bottom, unplug the wires... (two connect to the window grid, mark which one is which)... and the module is free.
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