Tail Lights
#4
Those trucks had an issue with the circuit boards inside the taillights. You will need an extra hand (someone to press the brake) but I would unplug the light and test with a test light whether or not you are getting the right signal back there. If so you need the circuit boards, if not at least you have eliminated them as the culprit.
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Chevy Silverado/ GMC Sierra Forum
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01-04-2011 09:22 AM