Had the 4:56 installed, drove it home and noticed that the "Tow/Haul" button doesn't seem to be engaging. When I press the button, the indicator lights up on the dash, but I don't notice any shift change (downshifting) when I'm doing about 70mph at around 2,500rpm's.....press the button, and NO change. Should I be worried? RPM's seem pretty high under normal driving, but I expected that, a little, with this gear change, but now why am I not noticing the "Tow/Haul" button working?????
Chris



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