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If truck is hooked to trailer with LED lights they blink continuously even when the vehicle is off. GM had recall on trailer light controller but still didn't resolve the issue.
Dealer tested and even replace trailer module and computer, still has the issue. GM TAC says the new 2019 GM Silverado with the advanced trailer package is not compatible with trailers with LED lights. I treated on another 2019 Silverado without the advanced trailer package and it doesn't have the same problem.
So GM's advanced trailer package is so horrible that it can't operate correctly with any trailer made in the last 10 years having LED lights
- Jason H.,