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DkJohnstone

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  • Name
    David Johnstone
  • Location
    WA
  • Drives
    2023 Sierra 3500 AT4

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  1. DkJohnstone
    I have a 2023 Sierra 3500 Diesel AT4. My truck broke down on Aug. 16, 2024. It is still sitting in the shop. There is no projected date for the part to arrive. I am waiting for the Transmission Control Valve. Anyone know what the delay is?
  2. DkJohnstone
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  3. DkJohnstone
    I am at 23,000 on my 2023 Sierra (3500). I got a little rumble. The car said "Reduced Power" . I was pulling a travel trailer. I had to park the trailer at an RV Park and get a tow to GM in Cransbrook, BC. They said it was the Transmission Control. They had to order. They have no date for me for when it will come. Meanwhile, my truck sits in BC while I live 4 hours away.
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