Assessments & Certifications
Electric Vehicle (EV) Training Completion Certificates
GM STC awards EV Training Completion Certificates for the Fundamentals, EV Expert, and EV Master learning paths for each brand. Once a technician has completed all service technical courses within one of the above mentioned learning paths, the technician will earn the brand-specific EV learning path Training Completion Certificate. Earned EV Training Completion Certificates will display in the technician’s transcript in the Center of Learning, and a printable version is also available that will display all earned certificates and their completion date.
To find a list of courses required to earn a specific EV Training Completion Certificate, search “Training Completion Certificate” in the Center of Learning Catalog. All EV Training Completion Certificates will appear in the search results. Select any certificates to be brough the View Course page where you can select the Checklist link. The checklist is an interactive file you can use to check off each course as you complete it to stay on top of which courses you need to complete in order to earn the certificate.
A record of the EV Training Certificate will be provided in your Center of Learning transcript once the final
required course has been completed. 24 hours later, the new record will be added to the EV Training
Certificates printable which can be accessed via the CERTIFICATIONS / CERTIFICATES button on the
bottom of the Center of Learning homepage. Select Electric Vehicle Certificate from the list that appears.
GM Master Technician Certification (MTC) Assessment
To attain MTC, the technician must be 100% STS in both Silver and Gold and complete all MTC components. GM MTC Assessment is a performance-based event in which each service technician must demonstrate knowledge and diagnostic skills. During the GM MTC event, each service technician is required to solve real vehicle faults by applying the accumulated learning from all courses in the Certification Area. The GM MTC Assessment Program covers 13 of the 15 service categories (it excludes Fundamentals and Emerging Issues.) MTC assessments are administered at training locations across the country.
The GM MTC Assessment contains a comprehension component and a practical evaluation to assess the service technician’s knowledge and diagnostic skills. Each Assessment consists of timed exercises that have been developed based upon the critical elements of the courses across the Certification Area and real-life concerns.
To achieve GM Master Technician Certification, a service technician must successfully pass the GM STC Certification Event and be ASE certified in that area.
GM STC recognizes a one-year certification with an annual renewal on Master Technician Certifications. The MTC program allows service technicians to retain their certification if they are at 100% on their STS training requirements.
Once a service technician successfully completes a MTC assessment, that service technician will remain Master Technician Certified as long as they continue to meet their STS requirements for the area(s) in which they are certified. The service technician must maintain their ASE Certification for that category as well.
The Service Technician Assessment Process is as follows:
- Each exercise is designed to assess each service technician’s ability to diagnose and apply skills with a simulated real-life customer concern using cross-divisional vehicles.
- To successfully complete a Certification Event, the service technician must obtain a total score of 80% or better across the performance-based exercises. During the assessment, a certifier who has received extensive training in conducting performance-based assessments evaluates the service technician’s skills.
A service technician who receives GM MTC status receives the following items:
Letter
Certificate of Achievement*
Patch**
*Only the first certificate will be mailed. Additional Certificates are available for download online.
**Additional GM patches are available for purchase through the Center of Learning Help Desk.
If a service technician does not satisfy all of the assessment requirements, a letter indicating the areas for improvement is provided to the service technician.
The service technician’s Learning Path and the STS/MTC tables define the courses in an area that must be completed before the service technician may enroll for the Certification Event. Service technicians can enroll for a Certification Event in the same manner they would for a course component.
During the enrollment process, the service technician is given the option to download:
- A Certification Event Performance Task List – which allows the technician to self-assess and verify they have the skills necessary to pass the certification
- A GM MTC Preparation Guide – which provides additional information about the assessments
Additionally, on each of the ASE Certification pages on the Center of Learning, technicians can download an ASE Prep Guide to help them prepare for their needed ASE Certifications. Below is a table listing the required ASE Certifications for each Service Area MTC.
| Mechanical | |
|---|---|
| Course | ASE Requirement |
| Electrical/Electronics | A6 |
| Engine Repair | A1 |
| Heating, Ventilation, and Air Conditioning | A7 |
| Brakes | A5 |
| Steering and Suspension | A4 |
| Manual Drivetrain and Axle | A3 |
| Automatic Transmission/Tranaxle | A2 |
| Engine Performance | A8 and L1 |
| or | or |
| Diesel Engine Performance | A9 |
Tips for a Successful Certification Assessment
It is important that you adequately prepare for your GM MTC Assessment. Here are a few tips on preparing for this challenging event:
- Arrive the day before the assessment, if traveling.
- If you have never taken an ILT course component, it is recommended that you take one in the subject matter area, before you attend the Certification Assessment.
- The Certification Assessment is similar to an ILT course, but without the guidance from an instructor. Experiencing the ILT training offered today gives you a much better idea of what to expect in Certification Assessment.
- Review any WBT courses you’ve already taken.
- Review any VCT materials you’ve received.
- Talk to your service manager about any area that could be improved, including Work Order documentation.
- Review the Service Information (SI) website, specifically for the Strategy Based Diagnostics (SBD) process.
- Find an expert at the dealership who can assist you in the certification area.
- Investigate and complete ASE certification in the subject matter area.
Certification Assessment Planning Chart
| 6 weeks before assessment | Check ASE for certification dates |
| 4 weeks before assessment | Review training material and other preparation items |
| 4 weeks before assessment | If needed, make the necessary travel plans |
| 2 weeks before assessment | Confirm enrollment in the Certification Assessment with the appropriate training location |
| 2 days before assessment | Verify Certification Assessment and directions |
| 1 day before assessment | If applicable, travel to the training location |
| Assessment day | Arrive at the training location 30 minutes prior to the assessment start time |
| Within 5 days after the assessment | Check the GM Center of Learning website for assessment results of the assessment and/or look for your results in the mail |
On the Assessment day
The enrolled service technicians will meet at the training location for the Certification Assessment. Below is a flowchart and explanation of what will take place:

- Prior to the service technician’s beginning the Certification Assessment process, the certifier provides an orientation of the training location, including the location of tools, layout of the training areas, and safety precautions.
- The certifier provides an overview of the day’s events and clearly defines the expectations from the service technician. During the Certification Assessment process, the certifier and the service technician will have minimal dialog.
- The service technician receives a Work Order from the certifier and begins to work on the timed exercises. At this time, the service technician will gather the proper tools and begin to diagnose and troubleshoot the existing conditions of the vehicle to identify the fault.
- The service technician utilizes previously learned knowledge and skills from the WBT, VCT, and V-ILT course components to diagnose, troubleshoot, and resolve fault conditions. The service technician uses the Certification Exercise Summaries form to document their work.
- The certifier observes and award points based on the service technician’s performance.
- The service technician documents the process used to resolve the concern, identify the potential causes of the concern, and determine the primary cause of the fault.
- After the service technician completes all exercises, the certifier explains the next steps. The service technician is then notified (pass/fail with Remediation Recommendation) within a required time frame.
Typical Assessment Room Layout
The assessment room may differ depending on the certification area. However, below is a typical layout used for Certification Assessment. All tools and equipment necessary will be available at the training location.

The numbers 1-7 represent exercise areas.
Certification Assessment Exercises
The exercises that you will perform have been developed based upon the critical elements in all the courses across each of the certification areas. Each exercise has been designed to assess your ability to diagnose and apply your skills on a simulated real-life customer concern utilizing vehicles, tools and equipment in a typical dealership.
Each exercise has been carefully designed and validated with Master Technicians, subject matter experts, and lead instructors. In addition, all the exercises have been piloted with a population of service technicians across the country to ensure that each of the assessments is valid and is at an appropriate level of application.
Also, all exercises and their associated performance criteria have been mapped back to the course objectives at the component level. Therefore, training remediation can be quickly identified and provided to the service technician, if needed.
For each exercise, the service technicians will be expected to do the following:

- Receive Work Order to determine next steps.
- Go to assigned work station to perform exercise.
- Use the vehicle, equipment, tools, and Service Manuals or SI to diagnose vehicle concern.
- Write down all of your steps, which include: Work Order, diagnosis, possible faults, most probable fault, readings, torque values, etc.
- Note: The more thoroughly you document your actions, the better.
- Finish exercise. Review and finalize your exercise summaries and return the equipment and tools to the appropriate locations/positions.
Observation/Scoring Sheet
Your performance will be evaluated and scored based upon the certifier’s observation of your performance and the accuracy and level of documentation on the Certification Exercise Summaries.
To successfully complete the Certification Assessments, you must obtain a total score of 80% or better across the exercises. During the assessments the certifier will utilize the Observation/ Scoring Sheet to evaluate your performance. Each form will contain a list of performance criteria per exercise. The certifier will evaluate your performance using those criteria.
Each assessment certifier is Master Technician Certified and has received extensive training in
conducting performance based assessments. This training included content on:
- The Certification Assessment process
- Scoring only on observable behaviors
- Interviewing techniques
- A thorough review of all the Certification Assessment exercises
This extensive training program was implemented along with an innovative scoring methodology to ensure there is consistency in scoring across all of the certifiers in the Certification Assessment locations.
The Results
At the completion of the assessment, the certifier will collect all of the Work Orders, instruction sheets, and Certification Exercise Summaries. Within 24 hours, the certifier will complete the scoring process using your write-ups on the Certification Exercise Summaries. The certifier will then post your results on the Center of Learning within 5 days of the assessment. If your score is greater than or equal to 80%, your training record will be updated to reflect that you have successfully passed the GM MTC Assessment
for the designated area.
Appeals Process
In the event a service technician wishes to appeal an assessment result, he/she may do so within
90 days of the Certification Assessment by following the steps below:
- The technician would have to email STC.Support@TrainingSupportAdmin.com
- Subject Line: Certification Appeal
- First and Last Name
- PID
- Date of Certification
- Worksheets, scoring, and any instructor notes will be reviewed by the Review Team
- Certification Admins will reply to the requester including the summary of their appeal from the
Help Desk
Cadillac-Branded Patches
Cadillac franchised Dealers have the opportunity to select Cadillac-branded Master Technician Certification (MTC) and World Class Technician (WCT) patches for their technicians. Cadillac Certified Service, in partnership with the Cadillac Dealer Council, implemented this new, creative solution to help Cadillac Dealers recognize their highest achieving technicians. To further elevate the role of our Cadillac technicians, Cadillac franchised dealers can edit existing and new technician profiles to indicate their dealer’s patch preference.
Note: These Cadillac patches will not match the existing MTC or WCT patches. Cadillac Dealers can order additional patches their technicians’ are qualified for at an extra cost.
The decision to switch to Cadillac-branded patches is a dealer decision, NOT an individual technician decision. To change your preferences from GM-branded to Cadillac-branded patches, first coordinate with your Service Manager to approve that your dealer is making the switch.
After you receive approval, navigate to your profile page on the Center of Learning. You can do this by selecting your name on the Center of Learning homepage.

Service Managers can also set patch preferences through the Profile/Profile Manager function. On the Profile Manager page, they can search for the technician(s) they would like to receive Cadillac-branded patches going forward. By selecting “Edit Profile,” they can then set the preference for each technician. On the Profile page, a new setting should appear: Cadillac GM MTC/WCT Patch. This setting has two radio button options “Yes” or “No.” By selecting “Yes,” the technician will receive Cadillac-branded MTC and WCT patches upon successful completion of a certification assessment (assuming the corresponding ASE certification requirement has been met as well). The setting will only appear for those at Certified Cadillac Dealers.

On the Profile page, a new setting should appear: Cadillac GM MTC/WCT Patch. This setting has two radio button options “Yes” or “No.” By selecting “Yes,” the technician will receive Cadillac-branded MTC and WCT patches upon successful completion of a certification assessment (assuming the corresponding ASE certification requirement has been met as well). The setting will only appear for those at Certified Cadillac Dealers.

How to Display Your Patches
As you earn your MTC patches, it can be difficult to choose how to display them on your uniform. Below are images of the some of GM-branded and Cadillac-branded patches and an example of how they should be displayed on your uniform.

How to Order Additional Patches
To order additional patches, either Cadillac-branded or GM, navigate to any of the Certification Assessment course details pages within the Center of Learning or use the form on the next page. Attached to the Certification Assessment course entries is the Certification Patch Order Form. By selecting this link, you will download the form which you can fill out electronically.

The order form asks the user to indicate their dealer billing information, shipping information, the technician’s name, their ID, whether they want GM or Cadillac-branded patches, and how many of each patch they wish to order. Once it is filled out, email the completed form to orderpatches@rlist.app.ray.com.
GM Master Technician Certification Preparation Guide
The GM MTC Preparation Guide is a reference tool for service technicians preparing to take a Master Technician Certification Event. It helps service technicians by explaining how to prepare for the assessment, what happens on the assessment day, and what happens following the assessment. It is included as an attachment to every certification catalog entry in the Center of Learning.
GM Master Technician Certification Performance Checklist
The Certification Performance Checklist lists the knowledge, skills, and performance criteria in which the service technician should be proficient prior to a Certification Event. The service technician and the service manager may utilize the Certification Event Performance Checklist to evaluate the service technician’s performance. This checklist determines if the service technician is ready to participate in the Certification Event or should attend the instructor-led course component prior to the assessment. The service technician can also use the checklist to prepare for the assessment.
GM World Class Technician (WCT)

A technician can achieve GM World Class Technician status in the Mechanical area. It’s achieved when a technician successfully completes all related training and the appropriate Master Technician Certifications.
Service technicians can achieve WCT status in the Mechanical area when they successfully achieve eight of nine MTCs with their accompanying ASE Certifications. This includes being 100% STS in Fundamentals. They have a choice of completing either Engine Performance or Diesel Engine Performance along with seven mechanical-related certifications. These areas are as follows in the chart below:
| Mechanical | |
| Course | ASE Requirement |
| Electrical/Electronics | A6 |
| Engine Repair | A1 |
| Heating, Ventilation, and Air Conditioning | A7 |
| Brakes | A5 |
| Steering and Suspension | A4 |
| Manual Drivetrain and Axle | A3 |
| Automatic Transmission/Tranaxle | A2 |
| Engine Performance | A8 and L1 |
| or | or |
| Diesel Engine Performance | A9 |
Technicians who receive World Class Technician status receive a gift package that includes the following:
- Letter of Recognition signed by the Director, Dealer Service, and Warranty Operations
- WCT statue (new design in 2021)
- WCT patch
- WCT toolbox medallion (introduced in 2017, new design in 2021)
- Downloadable certificate from the Center of Learning
Performance Assurance
The GM STC program has an evaluation system in place to measure the effectiveness of the performance-based curriculum and the delivery media. GM STC evaluates the performance of the training program at four levels:
Other Feedback Mechanisms
GM’s Customer Care and Aftersales division provides Dealer Satisfaction Survey results to GM STC to gauge service managers’ opinions of GM STC training products. The survey results provide valuable input for short-term and long-term improvement initiatives, ensuring continuous improvement to the GM STC program.
ASE Accreditation

Becoming an ASE Accredited Training Provider is a highly regarded accomplishment in the service technical training area, as it recognizes those organizations who provide outstanding technical training to service technicians. GM STC initially achieved this status in the automotive training industry by being awarded accreditation for its Service Technical Training curriculum in 2001.
Becoming accredited is a voluntary ASE certification program for training entities that provide continuing education to working automotive service technicians. The ASE Education Foundation administers the program and the National Institute for Automotive Service Excellence (ASE) grants the certification.
The accreditation program certifies training providers for working service technicians. ASE Education Foundation evaluates the training providers’ process of developing and delivering training and then recommends accreditation, when appropriate, as an ASE Certified Training Provider.
There are many benefits to receiving training from a ASE Certified Training Provider including:
- The recognition that the training provider and its processes have been reviewed against industry established and endorsed standards.
- The accreditation process serves as a tool for program improvement.