Chiller Technician

Job Description

At General Motors, our product teams are redefining mobility. Through a human-centered design process, we create vehicles and experiences that are designed not just to be seen, but to be felt. We’re turning today’s impossible into tomorrow’s standard —from breakthrough hardware and battery systems to intuitive design, intelligent software, and next-generation safety and entertainment features.

Every day, our products move millions of people as we aim to make driving safer, smarter, and more connected, shaping the future of transportation on a global scale.

The Role

The Chiller Technician reports to the Group Leader of the Engineering Maintenance and Technical Support (EMT) support organization. The EMT team is primarily responsible for specifying, sourcing, engineering, integrating, safely commissioning and developing a robust maintenance model for test equipment within the lab. This role directly affects the quality, durability and performance of vehicles and related products developed by General Motors.

This job is based in General Motors’ Milford Proving Grounds Energy and Emissions Laboratories. The lab and results it produces are used by GM’s growing team of engineers in support of the vision of a world with Zero Crashes, Zero Emissions and Zero Congestion.

The Chiller Technician role is a good fit for a qualified individual who is interested in state-of-the-art technologies and testing methods, system-level integration, and related equipment in a laboratory setting.

What You'll Do

Large tonnage chiller operation, in depth diagnostics, troubleshooting and maintenance including Universal Refrigerant Handlers License

Low pressure/ Low temperature systems

DX, flooded and absorption systems

Reciprocating, Screw, Scroll and Centrifugal compressor operation

Air- and water-cooled condensing systems

Strong in reading wiring schematics, electrical troubleshooting complex circuits and systems that may have redundant feeds or mixed voltages up to 480 volts

Be able to track, troubleshoot and diagnose building electrical distribution

Competent in use of multi-meter, megger and signal generator operation

Understand shut trip operation, gas detection system integration and be able to troubleshoot multi feed systems

Solar Array panel diagnostics

UPS System diagnostics

High Voltage capable up to but not limited to 4160 volts

Complete understanding in theory and operation of mechanical pump circuits with bypass control and multiple load sources. Be competent in reading one line drawings of mechanical systems

Have experience with pneumatic control or actuated systems

Possess solid background in preventative maintenance on many different types and styles of equipment including building and process

Understand wind tunnel design, operation and troubleshooting

Complete understanding of steam used in heating, humidity control and building systems including steam generation.

Be able to troubleshoot traps, condensate systems, steam to product heat exchangers and other systems dependent on steam operation

Have a solid understanding of chemistry and PH control in product systems used in the facility

Be able to understand and troubleshoot Variable Frequency Drive operation, control and adjustment

Experienced in rigging equipment and unstable loads

Operate forklift, powered man lifts and other powered equipment commonly used in facility service

Able to use dial indicator and laser guided alignment tools to precise measurements

Be familiar with vibration data collection, ultrasonic testing and thermal imaging to be used in predictive maintenance program

Heavy lifting as required

Able to work at heights and in various temperatures as required

Have good organizational skills, be a solid communicator who is timeline motivated with a safety-based mindset

Serve as a contact to internal and external stakeholders for Engineering Maintenance and Technical support related activities, including day-to-day operations and future planning initiatives

Monitor ongoing tasks, providing regular status reports to stakeholders and leadership while proactively identifying and escalating roadblocks when appropriate

Act as a technical resource to internal and supplier teams in all aspects of Engineering Maintenance and Technical Support

Ability to create, launch, and execute a preventative equipment maintenance system and related plans for key facility infrastructure supporting testing activities

Your Skills & Abilities (Required Qualifications)

5+ years of related experience in Large Tonnage Chiller service role

Demonstrated knowledge and experience with Maximo as used for Preventive maintenance, planning and execution

Demonstrated ability to work with a high level of autonomy in a complex environment, managing multiple maintenance events, by establishing priorities and executing with minimal supervision

Experience with equipment used in Emissions Development and Certification testing (Building and Process)

Experience utilizing building management systems for diagnosis and troubleshooting overall operation

Experience working with equipment suppliers and installation contractors

Demonstrated ability to work effectively within a multi-disciplinary team, where issues are complex in nature

Ability to read and interpret P&ID/One line/ Electrical and Control diagrams for use in diagnosis and troubleshooting of hardware

What Will Give You a Competitive Edge (Preferred Qualifications)

10+ years of related experience in Chiller service role

Understand wind tunnel design, operation, and troubleshooting

Understanding of theory, operation, and application of mechanical pump circuits, steam, humidity control, Reverse Osmosis and CAP DI systems used to support process operation

Vibration data collection, ultrasonic testing, and thermal imaging exposure to be used in predictive maintenance programs

Demonstrated knowledge and experience with Maximo as used for Preventive maintenance, planning and execution

Experience with equipment maintenance processes in an industrial setting

Experience working in an ISO 17025 or ISO 9001 accredited environment

GM does not provide immigration-related sponsorship for this role. Do not apply for this role if you will need GM immigration sponsorship now or in the future. This includes direct company sponsorship, entry of GM as the immigration employer of record on a government form, and any work authorization requiring a written submission or other immigration support from the company (e.g., H1-B, OPT, STEM OPT, CPT, TN, J-1, etc).



GM does not provide immigration-related sponsorship for this role. Do not apply for this role if you will need GM immigration sponsorship now or in the future. This includes direct company sponsorship, entry of GM as the immigration employer of record on a government form, and any work authorization requiring a written submission or other immigration support from the company (e.g., H1-B, OPT, STEM OPT, CPT, TN, J-1, etc).

This role is categorized as onsite. This means the selected candidate is expected to report to a specific location on a full-time basis.

Relocation benefits are available for candidates who qualify under company policy.

This position requires the ability to legally operate a motor vehicle on a regular basis and successfully complete a Motor Vehicle Report review.

 About GM

Our vision is a world with Zero Crashes, Zero Emissions and Zero Congestion and we embrace the responsibility to lead the change that will make our world better, safer and more equitable for all.

Why Join Us

We believe we all must make a choice every day – individually and collectively – to drive meaningful change through our words, our deeds and our culture. Every day, we want every employee to feel they belong to one General Motors team.

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