Hello all! New to this forum however I have been snooping here for insight the last week or so and it has provided a wealth of information! I have a 2019 LTZ duramax with the DL3 mirrors and seat memory. I ordered tow mirrors and harnesses the dealer suggested after they informed me that power fold was not an option. Was just about to have them installed because they tell me I need a special code that come with the mirrors for a BCN calibration?? Anyhow I cancelled the install after reading all of this to further investigate. I have the 84290965 and the 84290982 Gm harnesses In hand and wanted to order the DQS mirrors from GM parts authority. After speaking with Robert from GM parts authority, who gave me a ton of insight he suggested looking at this thread and reaching out to help me wrap my head around tearing door panels off of a 2 week old truck and installing myself what the dealers tell me is impossible!!!
Sorry for the long back story.
QUESTION: Are these the right harnesses for the DQS mirrors and will I be able to gain all of the functionality back if I get the DQS tow mirrors? Also, will I need to go to the dealer to flash the Seat memory module? My fear is, I do this on my own after they advise me not to and add mirrors they say won’t work and the final step will be asking them to flash the truck (something they keep telling me won’t work anyway).
Thank you all in advance and also thank you to pgamboa for all of the videos, research and lengthy detailed answers to so many similar questions/scenarios!
Awesome! I will order mirrors now! And will definitely be going to the dealer to chat. I cannot believe how complicated they make this process sound! Not to mention $560.00 install with ME bringing the mirrors and harnesses! And losing functionality! Thank you so much for the help. I will post when mirrors are here and on the truck!
