Trailer Lamps of Multiple Trailers Flash When 2020 Chevy Silverado is Switched Off

Question:

I have brand new 2020 Chevy and 2018 horse trailer and 2018 dump trailer every thing works when truck is running when off on both trailers rear lights flash very fast about every 15 to 20 seconds any ideas Thanks

asked by: Dusty

Expert Reply:

Are the taillights on your trailer LED's? If so, this could explain the issue you're experiencing. Ford and Chevy developed 'smart' trailer connectors over the last few model years that seem to be anything but smart. LED trailer lights can wreak havoc with these systems because of the very low power draw of LED lamps.

If this is the cause of your problem installing load resistors in the turn signal/brake lamp circuits of the trailer will increase the load on the circuit and solve the problem. We offer a pair of load resistors as part
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expert reply by: Mike L