General Motors High-Voltage Technician Levels: UPDATE

As electric-only, hybrid, and fuel cell electric vehicles are increasing in sales, they are becoming more commonplace in repair facilities. Along with the unique powertrains that come with these vehicles, also comes unique safety concerns. Regardless of vehicle maker, high-voltage (HV) systems pose a threat of injury or death if not handled properly. Only personnel with the proper training, PPE, tools, equipment, and service information should perform work on the HV systems.

Many OEMs have specific training requirements for different levels of high-voltage technicians. Typically, these levels range from no interaction with any high-voltage part of the vehicle (even after the high-voltage battery is disconnected/isolated), to the ability to work on the vehicle under live conditions at the highest OEM HV education level you can earn. The number of levels in between these two ends varies by OEM. Always check the OEM requirements before attempting to disable an HV system. Let’s see what General Motors (GM) has to say.

Per GM vehicle-specific service information found within the HV disable procedure: "Danger: Ensure all High Voltage safety procedures are followed. You must have the appropriate level of up-to-date high voltage training and certification combined with Personal Protection Equipment (PPE) to continue. Review the procedure steps to ensure you have the proper qualifications. You must stop if not properly qualified. Failure to follow the procedure exactly as written may result in serious injury or death."

GM does not currently specify technician training levels and requirements for performing certain procedures.

Understanding high-voltage safety, including OEM-specific high-voltage technician levels, will help ensure a complete, safe, and quality repair.

Additional I-CAR Collision Repair News you may find helpful:


Related I-CAR Courses

  • Repairer Driven News: Rivian Updates Door Handle Procedure Sunday, 4 February 2035

    Repairer Driven News (RDN) released an article featuring an updated Rivian procedure.

  • 2025 SkillsUSA National Competition Results Monday, 30 June 2025

    The 2025 SkillsUSA National Leadership and Skills Conference took place on June 26, 2025. Every year I-CAR sends volunteers (virtually in 2021) to judge the collision repair technology competition....

  • Ford/Lincoln Rocker Panel Reinforcement Sectioning Friday, 27 June 2025

    We are often asked, “Can I section this panel?” Let’s take a look at Ford/Lincoln vehicles and sectioning the rocker panel reinforcement.

  • Back-To-Basics: Backside Panel Refinish And Edging Thursday, 26 June 2025

    Sometimes, going back to the basics can make the difference between a quality repair and a failed repair. When repairing and refinishing, you might need to refinish the panel's backside and edges.

  • Hyundai Position Statement: Pre- And Post-Repair System Scanning - UPDATE Monday, 23 June 2025

    Hyundai released an updated position statement relating to pre- and post-repair system scanning.

  • App-Based Connected Services Considerations Tuesday, 17 June 2025

    Have you had an experience where the vehicle notified the owner that it was being moved while it was in your repair facility? App-based connected services are available from many vehicle makers and...

  • Digital Key Considerations Tuesday, 17 June 2025

    The intermingling of technology and automobiles continues, with digital key offerings from most vehicle makers. Digital keys utilize smartphone technology to expand vehicle access and owner...

  • Back-To-Basics: Tire Tread Pattern Wednesday, 11 June 2025

    Sometimes going back-to-basics can make the difference between a quality repair and a failed repair. Let’s see how to identify tire tread patterns and their repair considerations.

  • Corrosion Protection Guidelines: Ford/Lincoln - UPDATE Tuesday, 10 June 2025

    A key factor in collision repair is making long-lasting repairs. When a vehicle is repaired, many areas of corrosion protection are disturbed. This creates corrosion hot spots that, left untreated,...

  • Rivian Restraints Wiring Thursday, 5 June 2025

    The question is often asked, "Can supplemental restraints system wiring be repaired?" The answer is: it depends on the vehicle maker. Let's take a look at Rivian's position on this subject.