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Old 03-13-2007, 07:36 PM   #21
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I had to read the TSB to my dealership before they would do anything more than continuously change bulbs.
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Old 03-13-2007, 08:55 PM   #22
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well then twobonnies you service adviser sucks mine changed bulbs it burnt out on the way home i called from the road she ordered the part.

sounds like you need to find another dealer.
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Old 03-13-2007, 10:59 PM   #23
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TSB suggests replacement of the fog lamp wiring harness:

Lighting - Fog Lamp(*) Inoperative
Bulletin No.: 05-08-42-013
Date: September 21, 2005
TECHNICAL
Subject:
Fog Lamp Inoperative, Fog Lamp Bulb Burns Out Prematurely (Replace Bulb(*) and Forward Lamp Wiring Harness Assembly)

Models:
2004-2005 Pontiac Bonneville GXP

Built Prior to February 2, 2005
Condition
Some customers may comment that the one or both of the fog lamps are inoperative or the bulbs burn out prematurely.
Cause
The cause of this condition may be due to the bulb being exposed to heat greater than their specification. This increased heat will crack the glass crimp, allowing gases in the bulb to leak out.
Correction
Replace the affected fog lamp bulb(*) and the forward lamp wiring harness assembly.
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Old 04-18-2007, 01:33 AM   #24
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It isn't all that hard to do fog lights on most GM vehicles. They use either an 880, 893, or 894 bulb. They are relatively small bulbs (so they aren't beefy) and are susceptible to moisture and vibration which can cause havoc with them and shorten their life. GM doesn't list them as A) they believe most people don't use the driving lights that much so the bulbs are *supposed* to last longer, and B) you'll come back to the dealership for service.

You may just have to crawl under the car with it jacked up or on ramps for the easiest access. In some cases (like the GTO), a 9005/HB3 bulb can be fitted in the socket in favor of the little 880/893/894 bulbs, but that is not always the case.

One thing for any of you to do to help them last, is coat the base of the bulb where it'll seat into the light housing with something like a moisture repelling grease. Heck, believe it or not... Vaseline! I was having problems with the GTP as the housing had started to melt from overheating, so there was a gap for water to work it'* way in, exploding the bulbs. During a rainy spat, I'd go through 2 sometimes 3 sets of driving light bulbs a week. I got fed up with having to stock up on 893'*, so I pulled the jar of vaseline out, lightly applied it to the based of the light bulbs, and put them in the socket. To this day, I have not had to replace them.

All the vaseline (or other suitable grease) does is fill in exposed gaps and repel the moisture.
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Old 04-18-2007, 09:12 AM   #25
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Actually, I don't think moisture has anything to do with it on the 04'/05' model years. I had replaced mine four times before finally asking on here and, of course, the helping hands around here found me the TSB. I took the car in and had both wiring harnesses replaced. It'* been about a year since I had it done and haven't replaced a bulb since.

I drive the bonnie 110 miles a day and my driving lights are on for all of that time.

Seems to me the TSB was right.
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Old 04-21-2007, 12:03 AM   #26
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Default Replacing fog lamps

I don't know why the long process of removing the tire and all of that is listed here...I just remove the bottom splash shield and the fog lamps are right there, just pull off the cover and pull out the bulb. Mine is an 05 also, so it cannot be that different, can it? Pulling off the splash shield is painful enough, but I sure wouldn't pull the headlight and all of that other stuff just to get in there.
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Old 04-22-2007, 07:58 PM   #27
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2 10mm bolts are all that hold the headlight in and they are self contained so that you wont have to realign them. if you ask me i would rather pull 2 bolts and stand up then lay on my back and take out 10 but then again you can do what you want im not changing them for you
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Old 05-12-2007, 07:37 AM   #28
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I had the dealer replace the wiring harness on my 04 after burning out three sets of lights. Haven't had one burn out in 15,000 miles so far.
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Old 05-17-2007, 02:07 PM   #29
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Either way works. I did the earlier way simply because I was already under the car, had the splash gaurd removed (for another reason), so while in Rome...
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