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post #1 of 10 (permalink) Old 04-21-2010, 07:53 AM Thread Starter
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Burning Out Turn Signal Light Bulbs

My wifes 2005 Cobalts eats turn signal light bulbs. The headlamp assembly does have the condensation problem so I drilled a small hole to allow for drainage.

However, the car has burnt out many bulbs. I change the bulb and the problems goes away only return much to my annoyance.

Am I missing something?
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post #2 of 10 (permalink) Old 04-21-2010, 04:32 PM
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Maybe it's an electrical/wiring problem?? I don't think condensation alone would cause the bulb to burn out (otherwise my tailights would be toast, ).
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post #3 of 10 (permalink) Old 04-21-2010, 05:00 PM
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It's because they are also your running lights so there on all the time.
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post #4 of 10 (permalink) Old 04-21-2010, 05:30 PM
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^ Very true. But wouldn't the bulb last quite a while, unless you drove it A LOT?? red2003xlt, how often are you having to change them??
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post #5 of 10 (permalink) Old 04-21-2010, 05:52 PM
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Quote:
Originally Posted by krazedkitty View Post
Maybe it's an electrical/wiring problem?? I don't think condensation alone would cause the bulb to burn out (otherwise my tailights would be toast, ).
Moisture in the housing can cause a bulb to burn out.
are they black looking when you remove them ?
generaly speaking, a sign of moisture.
I'd be for removing headlight and resealing it to stop
the condensation problem.
just my .02

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post #6 of 10 (permalink) Old 04-21-2010, 09:29 PM
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im having this same problem
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post #7 of 10 (permalink) Old 04-22-2010, 12:35 AM
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i had that problem too for me it was the moisture that caused bulbs to burn out fast instead of drilling a hole u might need to reseal the headlight with silicone thats what the dealer people told me but they were lazy so they just ordered a new headlight for me lol...

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post #8 of 10 (permalink) Old 04-22-2010, 01:17 AM
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I think that was one of the reasons they switched the DRLs to the actual headlights starting in 07. In your situation, I'd say invest in some LED bulbs. I have a pair up front and they have lasted through two direct impacts to the headlamp and are still going strong.


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post #9 of 10 (permalink) Old 04-25-2010, 07:29 AM Thread Starter
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Quote:
Originally Posted by krazedkitty View Post
^ Very true. But wouldn't the bulb last quite a while, unless you drove it A LOT?? red2003xlt, how often are you having to change them??

About every 3-4 weeks, really.

I did speak to my nephew; hes a service writer.

Apparently Chevy is having this problem with the Cobalt and Malibu. The condensation can cause the actual lamp socket to corrode and short out.

I checked the socket has burnt markings; I guess I'm in the market for a new bit of wiring harness and as well.

Any ideas on what and where I can find that section of wiring harness?

Last edited by red2003xlt; 04-25-2010 at 07:42 AM. Reason: More information
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post #10 of 10 (permalink) Old 04-25-2010, 12:54 PM
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Quote:
Originally Posted by red2003xlt View Post
About every 3-4 weeks, really.

I did speak to my nephew; hes a service writer.

Apparently Chevy is having this problem with the Cobalt and Malibu. The condensation can cause the actual lamp socket to corrode and short out.

I checked the socket has burnt markings; I guess I'm in the market for a new bit of wiring harness and as well.

Any ideas on what and where I can find that section of wiring harness?
Dealership has the harness for the headlamp assembly. There is a single square plug it plugs into.


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