MGIG
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Harsh Downshifts - is there a fix?
MGIG replied to njk4o5's topic in 2014-2018 Silverado 1500 & Sierra 1500
This is a normal symptom of the GMC tranny. You can push and hold tow haul for three seconds and it will shut the gear brake off and it helps tremendously! Also try using Diablos Preditor 2 Tune, seems to help. Good luck
