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DonnyAT422

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  • Name
    Don Howarth
  • Location
    Washington
  • Drives
    GMC Sierra 1500 AT4

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  1. Thanks. Weird it becomes more apparent after the service.
  2. Recently took my AT4 in to service for the standard 45k service. At this time it’s recommended to do a flush, so we proceed to keep service Records up to date. After about a week after the flush, I started to notice an increase in the shudder at 30-40 mph. It was alway noticeable coming to a stop prior the flush. Now it feels like a rumble in the steering wheel. A hesitant response feel, but once I step on the gas - I gain mph. I had my truck in for diagnostic around 28k to get my concerns recorded. For the most part I dealt with it and lived with the slight rumblings at stop. But after the flush, it seems worse. Am I going crazy, or is this a sign of something deeper to come? I’m 10k from warranty going, so trying to get in front of it.
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