Pull your car up to 10 feet from your garage door with the lights on so you can see the reflection. Open the hood. On the headlight assembly you will see a hex head bolt in the center. (There is a slightly smaller one to the outside of the lamp, this is to remove lamp) Adjust the center one clockwise or counterclockwise to raise or lower the height of the beam. Adjust beam to be one foot lower than straight out on the garage door.
If the passenger side headlight on a 2001 Chevy Impala is dim, it may be time to change the bulb, or there is a problem with the wiring on that side.
On the passenger side below the headlight assembly, behind the bumper cover, accessable from the bottom.
Where is the starter located at on a 2006 chevy impala
In the front of the passenger side fender, The easiest way to access them is to remove the headlight assembly.
Where is the EGR unit located on a 2001 Chevy Impala? picture please
See sources and related links below for 2007 Chevrolet Impala headlight bulb part numbers.
where is the crank sensor located on a 2005 chevy impala
There is a bolt with a torx bit head on it behind the headlight if i remember right there should be two of them one is for up and down the other is for in and out.
where is the petcock located on a 03 Chevy impala
Where is the knock sensor located on impala SS
Open the hood, and its right there behind the left headlight.
There are little gears right behind the headlight assemblies.