Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. GM Components Holdings is an automotive components producer and distributor based in the United States. It is a subsidiary of General Motors. GMCH was created in 2009 as a result of the bankruptcy filings of both Delphi Corporation and General Motors. GMCH consists of four facilities previously owned by Delphi: Delphi Thermal Systems, Lockport, New York HVAC climate control systems, powertrain cooling systems, Delphi Powertrain, Rochester, New York engine management systems and related products, Delphi Powertrain Systems Grand Rapids, Wyoming, Michigan valve train products.