Third brake light question

Asked by Jan 01, 2017 at 06:27 PM about the 2004 Cadillac CTS RWD

Question type: General

Does the third brake light on a Cadillac 2004 CTS
base should always be on or just when you apply
the brake I'm curious just wondering if it's also a
light because mine only comes on when I apply the

2 Answers


The third brake light only come on when you apply the brake pedal. They are not a running light.


Yep Brake Light only.

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