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I have a 2017 Silverado 1500 LTZ that came with factory LED tail lights. I recently bought a set of Morimoto XB LED tail lights that are not intended for factory LED trucks. I also purchased a set of tail light harness for a non-LTZ Silverado (GM Part #’s 23295977 and 23295978) so it would be a plug and play installation. Everything works (running lights, brake lights, reverse) but I have hyper flash on the turn signals. I have more pics and video of the issue on my instagram - @pgsulins Here is a list of the things I unsuccessfully tired to correct the issue: 1. Using the non-LTZ wiring harness, I installed 50w 6 ohm resistors with no luck 2. Using the non-LTZ wiring harness, I disconnected the Morimoto resistors that came on the tail lights and installed 50w 6 ohm resistors with no luck 3. I hacked into the LTZ wiring harness with and without added resistors keeping the Morimoto resistors plugged in with no luck 4. I hacked into the LTZ wiring harness with and without added resistors disconnecting the Morimoto resistors with no luck 5. I disconnected the Morimoto tail lights and installed incandescent bulbs into the non-LTZ harness and still get hyper flash 6. I tried wiring the Morimoto tail lights directly to the trailer hook up and still get the hyper flash 7. I connected the factory LED tail lights using the correct harness and then wired the Mormimoto tail lights to the trailer hook up and the hyper flash stopped 8. I called Morimoto and they were not helpful 9. I called two Chevy dealerships and asked if they could eliminate the error code but they were unwilling to touch it Attempts #5 and #7 lead me to believe there are some electronics in the actual factory LED tail lights that the computer needs to read in order to avoid the hyper flash. I say this because there should be no hyper flash with attempt #5 because I am using a stock set up and attempt #7 eliminates the hyper flash but requires the stock LED tail lights to be hooked up. I realize my issue is self-inflicted due to these lights not be intended for my truck but I love the look of these tail lights and was willing to give it a try. I know Recon sells tail lights that are intended for trucks that came equipped with factory LED tails so someone has been able to get working equipment on this truck but I’m out of ideas. Does anyone have any info that could help? Thank you! Paul
