Oldsmobile 1995 Cutlass Supreme Owner's Manual page 116

,If the HUD Image Is Not Clear.
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Is the HUD image too bright?
Are the windshield and HUD.lens clean?
Your windshield is part of the HUD system. If you ever
have to have a new windshield, be sure to get one
designed for HUD. If y9u don't, the-HUD image may
look blurred and out
of
focus.
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