Cadillac 2007 DTS - Manual (Page 391)

7. Locate the vertical headlamp aiming screws.
They are located under the hood near each
headlamp assembly. First lift the flap to
access either of them. Each one is the top
outboard screw by the “ V” on the cover
panel next to the aiming flap.
The adjustment screw can be turned with
a 6 mm hex wrench.
8. Turn the vertical aiming screw until the
headlamp beam is aimed to the horizontal
tape line. If you turn it clockwise, it will raise
the beam and if you turn it counterclockwise,
it will lower the beam.
The top edge of the cut-off should be positioned
at the bottom edge of the horizontal tape line.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal
tape line. The lamp on the left (A) shows
the correct headlamp aim. The lamp on the
right (B) shows the incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite
headlamp.
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