Top Mounted Brake Light and a Spedo Question. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-12-2006, 05:18 AM   #1
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Default Top Mounted Brake Light and a Spedo Question.

Hey, I was just wondering what the correct method for changing out the top mounted brake light in my 92 ssei is. I can get ahold of the fixture but I can't seem to twist it or get it to come out. Should I Be trying harder? Also, it seems that I have a ~5k difference between my hud display and my mechanical spedo. This difference only occurs below 100km/h. Your help is appreciated.

Oh, and This isnt much of a problem but it seems that after I installed this new K&N Air Filter that I get a tiny bit of a surge while idle. Your input on that is also greatly appreciated. Thanks guys.
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Old 02-12-2006, 10:33 AM   #2
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you should be able to get in the trunk and get to the third brake light bulb...you have to twist and then pull

and for the HUD and the Speedo, the HUD is accurate...there is always seems to be some difference in speed between the HUD and the cluster
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Old 02-12-2006, 11:26 AM   #3
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Pat'* right on. Get in the trunk, get comfortable, and enjoy the black goo. You'll know what I mean after you do it.

The speedo is a mechanical device with friction. All of them will vary from the HUD somewhat.

Sounds like yours is 3mph slow or so. Normal. Mine lags the HUD by 2mph at 60mph.
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Old 02-13-2006, 03:23 PM   #4
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What is that black goo? When I changed my bulb, I had to be careful to not get it all over my hands.

LeifW
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Old 02-13-2006, 03:27 PM   #5
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Quote:
Originally Posted by LeifW
What is that black goo? When I changed my bulb, I had to be careful to not get it all over my hands.

LeifW
It'a poly-meric dihedral concoction made from seagull **** and pig-pen slop. The binding agent is typically earwax from a rhino, but can be substituded for the sludge at the bottom of a candle-wax vat.
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Old 02-13-2006, 03:30 PM   #6
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by LeifW
What is that black goo? When I changed my bulb, I had to be careful to not get it all over my hands.

LeifW
It'a poly-meric dihedral concoction made from seagull ***^ and pig-pen slop. The binding agent is typically earwax from a rhino, but can be substituded for the sludge at the bottom of a candle-wax vat.
Will'* a really smart guy, so I'll translate his answer to layman'* terms - "It'* icky"

That goo is the biggest problem with changing that bulb. No idea why they decided to use so much, but when I had to change mine out, it was glued in there with that mess. Unfortunately, you can't use any tools to help, because it'* just a bulb, so go by Will'* directions. Get comfortable, and fight with it.
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Old 02-13-2006, 03:31 PM   #7
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by LeifW
What is that black goo? When I changed my bulb, I had to be careful to not get it all over my hands.

LeifW
It'a poly-meric dihedral concoction made from seagull ***^ and pig-pen slop. The binding agent is typically earwax from a rhino, but can be substituded for the sludge at the bottom of a candle-wax vat.
Aka...black goo

Probably a tar like substance that they put over the top of the light..and as it warms..it seeps down.
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Old 02-13-2006, 03:31 PM   #8
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My speedo os 2 mph higher than my HUD. I've also found my HUD is about half a mile faster than the readout on my scantool (when hooked up).
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Old 02-13-2006, 03:35 PM   #9
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Quote:
Originally Posted by J Wikoff
My speedo os 2 mph higher than my HUD. I've also found my HUD is about half a mile faster than the readout on my scantool (when hooked up).
That'* odd. The VSS signal the scantool taps is the same signal the HUD presents as an image.

I know my HUD, Scantool, and GPS all match. But the speedo lags 2mph at 60, 3 mph at 90.
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Old 02-13-2006, 04:00 PM   #10
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Agreed..odd

Scantool and Hud always match here as well. Speedo...uh..who looks at that thing?
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