I am working on a 2013 silverado 5.3 that is having very aggressive downshifts in grade braking mode/in towing mode after a tune from a local shop. It enters grade braking prematurely and is very...
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I am working on a 2013 silverado 5.3 that is having very aggressive downshifts in grade braking mode/in towing mode after a tune from a local shop. It enters grade braking prematurely and is very...