20 21 22 GMC SIERRA 2500HD 3500 DIESEL ALLISON 10 SPEED AUTOMATIC TRANSMISSION

Here we have a good used fully functioning allison 10 speed automatic transmission removed from a 2021 Chevrolet 3500 4wd with 6.6 diesel engine. This should fit ALL 20-22 GM diesel 6.6 hd trucks with duramax engine only. Guaranteed to be a good functioning unit and will come EXACTLY as shown in the photos.