17-19 GMC SIERRA 2500HD 3500 ALLISON AUTOMATIC TRANSMISSION FOR DIESEL 6.6 L5P

Here we have a good used fully functioning allison 6spautomatic transmission removed from a 2019 GMC 3500 4wd with 6.6 diesel engine. This should fit ALL 17-19 GM diesel 6.6 hd trucks with duramax engine and maybe even earlier to 2015. Guaranteed to be a good functioning unit and will come EXACTLY as shown in the photos.