On November 26, 2013, Governor Patrick signed legislation to amend the automotive repair law. Chapter 165 of the Acts of 2013 repealed chapter 93J and created chapter 93K of the Massachusetts General Laws. As an emergency law, it took effect immediately. The new statute added heavy duty vehicles defined as having a weight of more than 14,000 pounds. The law states " For model year 2002 motor vehicles and thereafter and model year 2013 heavy duty vehicles and thereafter, each manufacturer of motor vehicles sold in the commonwealth shall make available for purchase by owners and independent repair facilities all diagnostic repair tools incorporating the same diagnostic, repair and wireless capabilities that such manufacturer makes available to its dealers."
See also our webpage on Massachusetts law about automobiles.