I didn't have this problem before. All at once they stopped working
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2003 Cadillac Escalade Question: When I press my break pedal my rear brake lights and third will not work.
Answer #1G. T. Service Center (4231 Answers) , Stephenville, TX - (254) 638-3236ProfessorG June 05, 2014, 10:38Master
Check brake fuse, and/or brake light switch.
Answer #2pushrod June 05, 2014, 16:31Master
Any problem shifting transmission out of park???? ... IF no.... Possible multifunction (signal light) switch!!!!