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International Automotive Technicians Network
Re: ALLISON SHIFTER
Posted to Transmission Forum on 2/18/2018

Reading codes out of the trans would really save time and $$. You could start with checking power and ground at the 80 pin plug at the tcm. 10 and 70 are Batt. 9 and 69 are ground. 63 is ign.

Check all of those with a test load (headlight) . Then get ... Login to read more.