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C5 headlight intermittent opening

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Old Aug 20, 2018 | 04:06 PM
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Default C5 headlight intermittent opening

Sometimes the lights pop up sometimes they don't
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Old Aug 20, 2018 | 04:07 PM
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Almost definitely the gears are shot. Does it make a loud clicking/grinding noise?
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Old Aug 21, 2018 | 12:50 AM
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Moved to C5 Tech.
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Old Aug 21, 2018 | 12:22 PM
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That's not a lot of info at all. Year of C5? Do both not open at the same time? Is it only one side that fails to open? Is car equipped with Twilight Sentinel? If so can you turn on Twilight Sentinel and headlights function properly?

Could be headlight relay. Could be motors. Could be multi-function switch.
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Old Aug 21, 2018 | 05:43 PM
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If it is a single light that doesn't open then it is the headlight motor. If they are both doing it at the same time it likely isn't the motor. When the lights don't flip up, do they still turn on? If not, you may have a loose fuse.
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Old Aug 22, 2018 | 07:16 AM
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when both mine stopped popping up, and i didnt hear the motor trying.. it was my headlight motor modular under the passenger headlight...
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Old Aug 22, 2018 | 03:50 PM
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Default C5 lights intermitent pop up

Originally Posted by Velocity_Vette
That's not a lot of info at all. Year of C5? Do both not open at the same time? Is it only one side that fails to open? Is car equipped with Twilight Sentinel? If so can you turn on Twilight Sentinel and headlights function properly?

Could be headlight relay. Could be motors. Could be multi-function switch.
More information on "C5 lights intermittent pop up" My vehicle is a 2003 Z06 with just 9K miles. No gear noise when problem occurs and both lights fail to open, or close, together. Sometimes they work fine. I checked grounds at front frame rails and they are all consistent at about .8 ohms.
Light doors are now stuck in the up position although I can raise or lower them manually. Headlights work fine. Whatever the problem is relates to both sides simultaneously. Any feedback given a better description of the problem than my first try would be appreciated. John
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