Ok long story short, I've had my 14 GC V6 limited for 7 months now and not a single day has passed where the 8speed hasn't shifted like a 20 year old freight truck. I've done countless TSB flashes (most recent one about 3 weeks ago) and probably the same amount of battery pulls, nothing has provided a permanent solution. I've pretty much given up and decide to live with it, the jerky ride kinda made me reminiscent of my high school days with my crapbox civic
Anyway fast forward to bout 2 months ago, it's spring time here and I've done about 6000miles on the GC, I've began to notice that the GC when warmed up probably started to make smooth 1-3 shifts and the jerky ride was gone! As time went on the jerky shifting was only apparent during cold morning start ups and completely gone after 10-15 mins of driving.
Right now it's about 30degrees C here and I've had a record smashing 3 consecutive days with no signs of weird shifting or jerky ride at all. I feel like I'm driving a completely different car.
So my question is that could this be a mechanical problem after all and not a software one? The gearbox when properly warmed up in hot weather has shown absolutely zero symptoms of jerky shifting, each shift was bang on and extremely smooth even in lower gears, and the best of all is that all this is in ECO !
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