Allison doesn't make an 18 speed transmission.
It shifts itself.
I want to see the shift patterns
I have a 1987 Pontiac Fiero GT and the shift pattern is: 1 3 5 2 4 R
Same shift pattern as a 9 speed. Youtube has a great video straight from eaton fuller on it that would be better than me typing it.
allison 1000 if it is before 2006 (5 speed). in 2006 they switched to the 6 speed allison 2000
Four speed transmission is : one down, three up.
shift it foward
It's a nine speed transmission, so see the related link for a diagram. The diagram is actually of a 13 speed transmission - the difference with the nine speed is that it doesn't have the High/Low settings for the top side. The nine speed "H" pattern is the same basic pattern used for the 8LL, 13, and 18 speed transmissions.
It should have a 6 speed Transmission.
First gear down, the next four are pulled up.
Allison 5 speed
Allison B500 6 speed