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GM Components Holdings

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GM Components Holdings is a General Motors subsidiary that manufactures and distributes automotive components from former Delphi facilities in the United States.

Last updated August 31, 2026

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Overview

GM Components Holdings (GMCH) is a United States automotive-components producer and distributor owned by General Motors. The company was established in 2009 in the context of the bankruptcy filings of Delphi Corporation and General Motors. Its creation brought several former Delphi manufacturing operations into a GM-controlled structure, allowing General Motors to retain access to strategically important component capacity while separating those operations from Delphi's reorganized business. GMCH's operating footprint comprises four facilities in the United States. Harrison Thermal Systems in Lockport, New York, produces heating, ventilation and air-conditioning systems together with powertrain-cooling products. Rochester Powertrain in Rochester, New York, manufactures engine-management systems and related components. Wyoming Powertrain Systems in Grand Rapids, Wyoming, Michigan, makes valvetrain products. Delco Electronics and Safety in Kokomo, Indiana, produces automotive electronics and associated safety-related products. The facilities primarily support General Motors vehicle programs, but the company also manufactures components for approximately 20 other customers. Its product scope therefore spans thermal management, engine control, valvetrain systems, automotive electronics and safety-related technologies rather than consumer-facing vehicle branding. GMCH is best understood as an industrial supplier and manufacturing platform within the General Motors group, with its identity tied to component production rather than to a retail product line. Publicly available reference material provides limited information about GMCH's later corporate development, leadership, financial performance and current operating status. No standalone stock listing, independent consumer distribution model or separate public-facing website is identified in the supplied sources.

History

GM Components Holdings was created in 2009 during a major restructuring of the North American automotive supply chain. Its formation followed the bankruptcy filings of both General Motors and Delphi Corporation. Delphi had been a major automotive-parts supplier and had previously operated a number of manufacturing sites that were important to vehicle production. The GMCH structure placed four of those facilities under General Motors' ownership or control, preserving their production capabilities within the GM group while Delphi proceeded through bankruptcy-related reorganization. The resulting organization was not established as a conventional consumer brand. Instead, it functioned as an industrial component producer and distributor. Its facilities continued specialized manufacturing in areas directly connected to vehicle assembly and powertrain production. Harrison Thermal Systems in Lockport, New York, focused on climate-control and powertrain-cooling systems. Rochester Powertrain in Rochester, New York, produced engine-management systems and related products. Wyoming Powertrain Systems in Grand Rapids, Wyoming, Michigan, manufactured valvetrain products. Delco Electronics and Safety in Kokomo, Indiana, supplied automotive electronics and related safety products. The four-site structure gave GM access to a broad set of component capabilities across thermal systems, engine controls, mechanical powertrain parts and electronics. Although the operations were closely associated with General Motors, GM Components Holdings also manufactured products for roughly 20 other customers. This customer base indicates that the company served both internal GM programs and external automotive customers, although the supplied reference material does not identify those customers individually. The available reference material does not document subsequent acquisitions, divestitures, leadership changes, financial results, product launches or a later change in corporate ownership. It also does not establish whether the entity remains active under the same structure today. Accordingly, the documented history is centered on the company's 2009 formation and its operation of four former Delphi facilities in the United States.

  • 2009

    GM Components Holdings is created

    [1]

    GM Components Holdings is established following the bankruptcy filings of Delphi Corporation and General Motors, bringing four former Delphi manufacturing facilities into a General Motors subsidiary.

Products and positioning

A General Motors-controlled manufacturing and distribution platform for automotive components, combining former Delphi facilities with production serving GM and other vehicle-industry customers.

  • Thermal management

    Harrison Thermal Systems

    The Lockport, New York, facility manufactures automotive heating, ventilation and air-conditioning systems, as well as cooling products used in vehicle powertrain applications. Its capabilities place it within the thermal-management portion of GMCH's component portfolio.

  • Engine management

    Rochester Powertrain

    Located in Rochester, New York, Rochester Powertrain produces engine-management systems and related automotive products. The facility represents GMCH's electronic and control-oriented contribution to powertrain manufacturing.

  • Valvetrain components

    Wyoming Powertrain Systems

    The Grand Rapids, Wyoming, Michigan, facility manufactures valvetrain products for automotive powertrain applications. These components support the mechanical operation and control of internal-combustion engine systems.

  • Automotive electronics and safety systems

    Delco Electronics and Safety

    The Kokomo, Indiana, facility produces automotive electronics and related safety products. It preserves a portion of the Delco electronics manufacturing heritage within GM Components Holdings' broader component-supply operations.

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