yeah that's how they made my trucks 4l60e tranny shift harder. upped the pressure on the tranny lines and it shifts hard. sometimes it'll chirp 2nd in an auto(my trucks slow, so doing that is def. doin somethin)
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2010 Camaro 1SS(back in a camaro again, yessssss!)
2010 silverado z71 ccsb(sold, old dd)
2010 camaro1ss(sold, missed, will have another someday)
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