Quote:
Originally Posted by Cornpop
I've seen it on my dash but I don't know what the heck it does
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Your transmission has two shifting "modes" built-in. They are an "Economy" shifting mode and a "Performance" shifting mode. The performance mode will improve your acceleration and hill climbing ability by allowing the engine "wind out" a bit more and downshift sooner on upgrades to help you maintain your speed.
You must push the "Mode" button in the shift pad after you start the rig to engage the performance mode. The rig on startup always defaults to "Economy" mode. You can press the button while moving to either engage Performance mode or to take it back to Economy mode. You do not have to be stopped.
Another owner on here posted some videos from Allison explaining how this works, as well as additional features your transmission shift pad provides. I will try to find them and provide a link.