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Intermittent Transmission problem


Frozen001

Question

I have a 2004 2500HD 6.0l 4x4 reg cab GMC sierra... I believe its the 4L80E transmission and I have noticed for a while that when I come to a stop light and go to accelerate the transmission sort of feels like it forgot to shift into first...almost like it stayed in second, then after about 2 seconds it realizes its in the wrong gear and drops into first. I have head that reflashing the computer may fix the problem... is this correct?? The truck only has 15,000 miles on it and I know if I take it in I will get the cannot repeat problem because it happens for randomly and infrequently... I figure I am not the only one to have had this problem and there might be a TSB that covers this...

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