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17Sierra5.3

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About 17Sierra5.3

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  1. I have a 2018 Sierra 1500, 5.3, 4wd, with 6l80, 26k miles. I have recently been dealing with stumbling and hesitations under light acceleration at lower speeds, it feels similar to a misfire. It is not noticeable under heavy acceleration. I do not tow much, maybe 600 of my 26k miles have been towing. No check engine light. I had identical issues with my 2015 Sierra 1500, 5.3 with 6l80. I had these issues until the torque converter took out my transmission at 33k miles. I took it to three different dealers and each one fed me an excuse of adaptive learning transmission or we can't recreate the issue. The transmission finally went the next day after taking to the last dealer. That transmission was replaced under warranty and all issues were resolved under they all started to come back at 46k miles. I traded it in at that point for my 2018. I am certain the dealership will be of no help to me now without a check engine light. My question is, is it too late to save my current transmission now that issues have started to come up? Would an upgraded torque converter save it or has the damage likely been done by fragments/contamination? My nearest dealer is 60 miles away and it is very frustrating to burn a day, explain problems, and have them reflash the transmission or tell me that they can't recreate the issue. I feel like I'm driving a ticking time bomb.
  2. Just an update for anybodY who has this problem. I called GM Customer Care and explained to them. They told me I'm still under warranty and to take it in. I went into local dealer and explained and they ordered the new part under warranty.
  3. Has anybody had the dealer fix this? I was vacuuming my seats and my passenger side seat back panel was hanging of off at the top. Needless to say I have 2 broken plastic clips. I tried a super glue on the clips but it is polypropylene or polyethylene or both and does not adhere. Very expensive new pickup to have such cheap clips. 2015 Sierra 1500 Crew Cab SLE z71, 10,000 miles.
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