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Posted on Feb 06, 2010
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2007 GMC Sierra 2500HD - adjust headlight aim, mine is too high

How do I adjust headlight aim, mine is too high, people are flashing me

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  • Master 10,319 Answers
  • Posted on Feb 06, 2010
Anonymous
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Joined: May 22, 2009
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Every headlamp has two adjusting set screws. One for vertical and horizontal. They are normally a torx driver socket that will turn these screws. If you have a garage use the garage door at night to set the beams reflecting off the door. Centering the truck to a center mark on the door would be helpful when you make the adjustments. That way your headlamps should aim evenly. Please note if your driveway is not level jack up the trucks rear end to make it so. Leveling the vehicle makes the difference before any adjustments are mad

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