Here'* my thought Bill. Look at the chart on page 4 of the ATSG manual. You will see that the input clutch is on for 1st gear. It'* also on for 2nd gear but is not effective. Every other gear does not use the input clutch, it'* only 1st gear. From what I under stand the OP is saying it'* not starting out in first, or it seems that way. So, either the clutches are bad, or the band is bad.
As for the solenoids. There are 2 solenoids. 1-2 and 2-3
1st gear, on on
2nd gear, off on
3rd gear, off off
4th gear, on off
So you can see if the 1-2 solenoid is stuck off, you would lose 1st and 4th gear, if stuck on, you loose 2nd and 3rd. Does this help?
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1997,1998,2000,2005 year confused Bonneville SSExi. Stock? ish.
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