C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Headlamp adjust

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Old 09-17-2014, 03:17 PM
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Stellabarbara
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Default Headlamp adjust

I have a 1990 C4 - the right head lamp recently started to fail. It does not come all of the way up or open. Do the ***** at the top of the actuator control how the lamp opens ?. I can hear the actuators working, but the lamp does not always open properly. Any ideas?
Thanks for your help in advance...
Old 09-17-2014, 04:47 PM
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John A. Marker
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The ***** are to manually open the lights should they fail to open.

Chances are the bushings in the assembly are toast. There have been many posts in the past on this issue. Check out this youtube video.....

or this one....
Old 09-17-2014, 08:42 PM
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Stellabarbara
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Originally Posted by John A. Marker
The ***** are to manually open the lights should they fail to open.

Chances are the bushings in the assembly are toast. There have been many posts in the past on this issue. Check out this youtube video.....
Corvette C4 Left Headlight Motor Repair - YouTube

or this one....
How to change the headlight motor gear in a C4 Corvette - YouTube
Thank you. I did solve the issue on the right side. There was a black pipe running along the inner fender that lamp was hitting. I tie strapped it to another pipe , pulling it away from the lamp and that solved the issue. Now the left side is not in sync.?

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