Slow Shiftin in 04 gmc sierra 5.3
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Slow Shiftin in 04 gmc sierra 5.3
hey, i have a 04 sierra 5.3, its an automatic and when you try to accelerate quickly, it takes a little longer then i like for it to get to 2nd, and when it does it is a pretty rough. it can be the same for 3rd but its off and on. any suggestions on how to diagnose/fix and improve this? thanks
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Wide open, there are 221,777 km on it. i have replaced the trans fluid right when i got it, but that was the most done to it. dont know the last time the previous owner had it serviced. i have no muffler and a cold air, dunno if that would have much of an effect in terms of acceleration.
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