I have an appointment Monday, May 24 to have the tranny flushed and a new filter. I have almost 21000 miles on the truck. I changed the filter at 5000 because some guy at a RV rally that knew someone that worked for Allison and they said it was the thing to do. I never had any trouble and don't want any. I just got back from a trip to the mountians and this tranny is amazing.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!