02-02-2021, 10:28 PM
Pete,
When you are at the factory have them check to see if they can program the transmission to use all 12 gears. My coach (1223) was listed as a 10 speed ZF when I purchased it but turned out the system could be reprogrammed to 12. Works seamlessly.
Best of Luck
Mike
When you are at the factory have them check to see if they can program the transmission to use all 12 gears. My coach (1223) was listed as a 10 speed ZF when I purchased it but turned out the system could be reprogrammed to 12. Works seamlessly.
Best of Luck
Mike
2008 Newell #1223 4 slide, Cat C15 with ZF 12 spd, 2004 Chevy Silverado 4x4 Duramax 6.6