ANSWERS: 2
  • It's very likely you have a blown bulb in the right rear assembly and possibly the right front marker as well. The front right turn signal lights, but doesn't flash, and the rear right turn signal and brake light doesn't come on at all. Replace that right rear turn signal bulb. Automotive systems and flasher units are DESIGNED to fail to flash if there is a burnt bulb. It's a safety feature so you know to replace the bulb when it burns out. I would check that outside marker light in front as well, if there is no light there, but that won't affect your turn signal / brake light issue. Good Luck!
  • This may be a little late but I thought I would through in my two cents ! If the previous answer did not help try checking your grounds from the bulbs outer housing to where they connect at the truck chassis ! if you do not have a good ground it could affect the flow of voltage . causing this problem at times !

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