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  1. CT4 Forum
    I recently bought a CT4 2021 Premium Luxury, and this car has been my dream car for a long time. I still have my CTS 2011, which I loved. However, from the first week, I noticed issue related to my CT4 I have been hearing a clicking noise and an uncomfortable feeling every time I press and...
  2. CTS First Generation Forum - 2003-2007
    Anyone run into a code showing on the built in code reader (2003 Only) but not any other OBD-II scanner/reader? I've tried 3 standalone readers (apparently I collect them) and all are missing a code. The same code... P0504h - Brake Switch A/B Correlation My brake lights do work properly but...
  3. Escalade, EXT and ESV Forum - 1999-2006
    First noticed a year ago when applying brakes, the right turn signal bulbs (front, mirror, rear, dash) would all illuminate solid. Intermittently. So replaced the multifunction switch, no change. Just replaced the brake light switch at the brake pedal and NOW... Now: No brake lights Left turn...
1-3 of 3 Results