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Why does my 2003 tahoe light bulbs go out fast?

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Old October 28th, 2010, 7:00 PM
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Unhappy Why does my 2003 tahoe light bulbs go out fast?

since 2003 i changed many light bulbs for my 2003 tahoe headlight.
sometimes it goes out in a week..
i tried sylvana, eurodezign, and many other brands..
the longest one was called sylvana.. longlife...something..
it lasted for 6months i think...
i saw many chevy vehicle with one daylight on..and many with one headlight on too..
is it normal that the light bulbs go out that fast?
Old October 28th, 2010, 7:43 PM
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Welcome to the forum.

Check your voltage while driving w/ lites on. Also check the socket to ensure that there's no corrosion.
Old October 29th, 2010, 6:49 AM
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Originally Posted by 73shark
Welcome to the forum.

Check your voltage while driving w/ lites on. Also check the socket to ensure that there's no corrosion.
i checked the voltage...and it goes up and down...why is it doing that..?
Old October 29th, 2010, 8:04 AM
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the regulator in the alternator my be bad or going bad...
most of the time its easier to replace the whole alternator but you may be able to get a rebuild kit that includes diode, regulator, new bearings at about the quarter of the cost but it can be a little bit of work...

check all your battery cables for good clean solid connections at all points
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