2008 LT High-Beam Problems - Chevy Impala Forums
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post #1 of (permalink) Old 03-23-2017, 01:29 PM Thread Starter
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2008 LT High-Beam Problems

This morning I noticed my left side high beam wasn't coming on while the right side was working fine.
I checked the bulb and the fuses, the bulb works and the fuse was fine (I replaced it to be sure) but the light still doesn't work. So I checked the fuses for voltage and sure enough the left side fuse has no power. I assume the problem has to be between the relay and the fuse but I have no idea where the relay is located.


Any help would be appreciated.
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post #2 of (permalink) Old 03-23-2017, 06:58 PM
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If you have one High Beam working there there is an issue inside your Box. Here is why. The High Beam Relay controls both the right and left. So if you test one of the Fuses and it don't have power while the other one does then there is a issue inside the box. Your Car and many of the IMpalas before yours have PCB controlled Light Relays that are not changeable.

From your None changeable Relay inside the box there is some Copper traces that run to the 2 fuses. from the fuses out to the connector where it exits the box.

James

It isn't what you Drive that matters, It is how you drive it.

James
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post #3 of (permalink) Old 03-23-2017, 07:04 PM
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Here is a Picture to give you a better idea of what I am talking about for your Fuse box... Please note the broken trace.

This isn't a Impala Box It is a GM product, this is to give you an idea of what I am thinking it could be...

James


It isn't what you Drive that matters, It is how you drive it.

James
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post #4 of (permalink) Old 03-24-2017, 02:04 PM
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I am thoroughly impressed by the wealth of info. Especially, Revo.

I wonder if all cars have both high beams in one circuit and low beams in two split circuits. My other Ford is just this way.
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