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Old 11-09-2013, 08:39 AM   #1
Engle's Avatar
Tiffin Owners Club
Join Date: Apr 2013
Location: Gods Country, Alabama
Posts: 86
Allison 1000 wont shift into 6th gear.

I have a 2006 Allegro Bay on a Workhorse chassis. It has an Allison 1000 6 speed. I noticed while on a weekend trip that it is not shifting into 6th gear. (at least the dash screen says that it is not). Anyone had this happen before?
I really cannot tell exactly when this started happening. Is there a chance that it is shifting and the screen readout might be wrong?
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Old 11-09-2013, 08:46 AM   #2
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Join Date: Oct 2002
Location: Madison, MS
Posts: 10,258
LEO: There should be a 3 position switch on your dash somewhere. It is probably in the "middle" position which allows 5th gear, but prevents 6th. Try switching to see which direction causes the "O/D off" light to illuminate. The opposite direction will allow 6th, but speed must also be obtained for that final upshift. Ed
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Old 11-10-2013, 06:57 PM   #3
Engle's Avatar
Tiffin Owners Club
Join Date: Apr 2013
Location: Gods Country, Alabama
Posts: 86
When all else the instructions.

Thank you Ed. Again, you saved the day. I did not realize that the switch was a three position switch. I depressed the low side of the switch and all is perfect.

Thanks for all that you do to help us rookies.
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