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Topic: Allison shift pad (Read 5302 times) previous topic - next topic

Re: Allison shift pad

Reply #20 –
If all repairs were this simple I would be a very happy camper.
Less than 15 min. even if you "milk" the job.

Re: Allison shift pad

Reply #21 –
Changed fuel filters and started coach,was going to move around but will not go in drive,all the other buttons work but drive will not beep or indicate drive,removed keypad,will call the repair place in morning.The wiring harness had a jumper wire between number
3 and 1, the wire was cut/broken,connected the wires but just got the 2 snake eyes,disconnected wire and will wait to talk to repair place.

Re: Allison shift pad

Reply #23 –
Quote from: John44 –
The wiring harness had a jumper wire between number 3 and 1, the wire was cut/broken...
The cut wire has been noticed by many Forum members when they are poking around the back side of the touch pad.  It is a "modification" to the touch pad wiring connector, done by the factory when the touch pad is located remotely from the Allison CPU.  The cut wire is discussed here:

Allison Touch Pad connector

Re: Allison shift pad

Reply #24 –
Quote from: John44 –
Changed fuel filters and started coach,was going to move around but will not go in drive,all the other buttons work but drive will not beep or indicate drive,removed keypad,will call the repair place in morning.The wiring harness had a jumper wire between number
3 and 1, the wire was cut/broken,connected the wires but just got the 2 snake eyes,disconnected wire and will wait to talk to repair place.

Try putting hair dryer on the touchpad to warm it up and see if that gets it to go in gear.  I am assuming you made sure engine was at slow idle when you tried to shift into gear. If idle is too high it will not let the transmission go into gear

Re: Allison shift pad

Reply #25 –
Have the pad in the house,will warm it up and try once again,think it just had too many touches.

Re: Allison shift pad

Reply #26 –
Quote from: turbojack –
I am assuming you made sure engine was at slow idle when you tried to shift into gear. If idle is too high it will not let the transmission go into gear


Normally if too high an idle speed, the "D" will just flash and indeed it will not go into gear.

Re: Allison shift pad

Reply #27 –
Goes into reverse ok,getting from there to nuetral takes a few presses,no going into d.

Re: Allison shift pad

Reply #28 –
Had the same issue...called John in TX He rebuilt my selector pad and all is well....It's a click pad no  more "mush"

Re: Allison shift pad

Reply #29 –
Update,sent to John in Tx after talking to him.

Re: Allison shift pad

Reply #31 –
We also sent our shift module to TX for a rebuild. Being from Michigan the cooler temps made changing options slow and irritating. Glad we did the rebuild.

Re: Allison shift pad

Reply #32 –

After suffering 6 years ago from the dread "Snake Eyes" we sent our touch pad and CPU off to Transmission Instruments for a rebuild.  We have had zero transmission control problems since then.

No start, with Allison "snake eyes" (Problem Solved)

Based on our experience, and other reports on this Forum, there seems to be some correlation between low temperatures and problems with the Allison control system.  After we got our refurbished components back and reinstalled, I decided it could not hurt anything to always keep the CPU and touch panel warm in cold weather.  To this end, during the winter months when the coach is parked, I place a small electric heater on the floor in front of the driver seat.  If cold outdoor temps (below 40 degrees F) are forecast I turn the heater on and let it run continuously, gently blowing warm air in the direction of the CPU.  I strive to just keep the CPU slightly warm to my touch.  It is my thinking that doing so might prevent any moisture condensation in the metal CPU housing, and might possibly help avoid future problems.

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Re: Allison shift pad

Reply #33 –
Got the pad back,$499 for the rebuild,works great,great service from John and family.