http://schoolbusmechanic.blogspot.com After repairing a problem on these transmissions you can clear the codes using the shift pad. Allison transmission codes are 4 digits, while checking for a code you can hit the Mode button on the shift pad as many times you want to see if there is more than one code. The first code will indicate as D1 plus the code number, hit Mode again you will get a D2 with the code number, hit Mode again you get D3 plus code number and so on. This is an Allison MD 3060 Automatic Transmission in a 1997 Thomas schoolbus powered by a Cat 3116 Diesel Engine.
The video about allison transmission codes is very good. It is very informative. I really like watching videos like this.
krikekimnack 1 year ago