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John Ladolcetta

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  • Name
    JohnBert35
  • Location
    Lindenhurst, NY
  • Drives
    2020 Sierra AT4

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  1. Dealer rebooted software and manual shift is working fine.
  2. Looks like the stuck in park issue is fix. Now I notice the Manual shift in low is not working. Back to the dealer.
  3. Yes. I shifted in L as stated in owners manual. Then hit plus and minus.
  4. Did you ever find out why the plus or minus does not work? I have a 2020 Sierra and mine does not work. I have an appointment with dealer.
  5. Just curious . Mine seemed to happen when it was cold 28 degrees. Does anyone else notice temperature to be a factor?
  6. The date on my Certificate of origin is 12/04/19. The sad part is the dealers are saying they no nothing about this issue. I have not had the issue in a week or two. This morning Temp outside was 28 and issue returned. I have appointment in two days for dealer to install new part # 84800776 2/29/20 Part installed yesterday 28 degrees out this morning no issue. So far so good.
  7. 2020 Sierra AT4 Less than 100 miles. Had issue twice in one day could not shift out of park. Brought it back to dealer and they never heard of this issue. I showed them previous post (FknLeon). They could not find anything but are going to order a part. Waiting on part.
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