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Allison harsh downshift
Posted to Transmission Forum on 10/24/2023 4 Replies

Customer just called me to schedule a service for next week and said he want me to look into his transmission concern as well. He has the allison 10 speed with 160k. Does a lot of over the road pulling with it. Anyways he is experiencing a very very harsh down... Login to read more.

4 Replies Received (View Replies)

 

car Vehicle Data

2020 GMC Sierra 3500 HD Denali 6.6L

VIN 1GT49WEY3L
Engine6.6 L
Trans1-speed Automatic (Electronic)

car Vehicle Data

2020 GMC Sierra 3500 HD Denali 6.6L

VIN 1GT49WEY3L
Engine6.6 L
Trans1-speed Automatic (Electronic)