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2020Z71LTZ

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  1. 2020Z71LTZ
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  2. 2020Z71LTZ
    My trailers have incandescent bulbs for tail, turn, brakes, but LED's for markers. Getting the message, "CHECK TRAILER BRAKE LIGHTS" when the brakes are applied. The light test checks out but dealer says it not a warranty issue. Service GM Service Bulletins suggest owners install resisters on wiring. Has anyone done this yielding good results?
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