Blowing bulbs - Chevy and GMC Duramax Diesel Forum

04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 5 (permalink) Old 01-03-2013, 11:47 AM Thread Starter
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Question Blowing bulbs

I have a 2005 chevy duramax. The problem I'm having with it is that it's blowing the headlight and the fog light bulbs too fast.( at least once a month on the headlight and once every three months for the fog lights). A mechanic told me it sounds like that's from over charging, but when I took it to the shop to the alternator guy, he tested the alternator, and said the alternator was fine. I can feel the heat coming from the headlight from standing about one foot or more away from the headlight. Any suggestions would be greatly appreciated!
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post #2 of 5 (permalink) Old 01-03-2013, 11:59 AM
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Mines the same.

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post #3 of 5 (permalink) Old 01-03-2013, 12:37 PM
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are the plugs melted or tarnished? a bad connection can cause to much heat. But other than that, it's usually voltage (to much) that kills them.......or really cheap bulbs.

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post #4 of 5 (permalink) Old 01-04-2013, 05:00 PM
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Check your connectors for moisture or tarnished. Clean them then put white Lithium or electric grease on the connectors and see if that helps.

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post #5 of 5 (permalink) Old 01-05-2013, 02:42 PM Thread Starter
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Ok thanks
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