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I have an Allison 1000 in a 2002 Silverado with an 8.1. Can Hp Tuners change the shift points yet? Trying to delay the 4 to 3 downshift.

Yes,
This is BS! Why not give us the option to not write to that specific controller(FSCM) than? I never got warned i would need an extra credit to tune a vehicle.

Hello,
I have a 2002 chevy silverado 2500HD 8.1 with an Allison 1000 transmission.Can anyone tell me how i can keep it from downshifting when my speed is over 65mph.

Thanks in advance