Griffin’s Wixon gets automotive certification in Las Vegas

FORT MADISON – Diedra Wixon, Service Advisor/Customer Service Rep of Griffin Muffler & Brake Center, located at 535 Ave G, Fort Madison completed the necessary requirements to earn her Accredited Master Automotive Manager (AMAM) designation. Wixon was recognized during a formal graduation ceremony on November 6, 2019, in Las Vegas.

The AMAM designation represents a standard for professionalism in automotive service management. The Automotive Management Institute (AMI) awards it to industry professionals who successfully complete at least 180 credits in seven core education areas: Financial Management, HR & Personnel Development, IT Management, Leadership, Operational Management, Risk Management and Sales & Marketing.

AMi was established in 1989 to answer the demand for continuing education and industry-accepted recognition programs tailored specifically for the business needs of the automotive service and repair industry. To date, AMi programs have attracted more than 250,000 enrollments throughout North America. AMi is a nonprofit 501(c)(3) educational foundation, to which tax-deductible contributions may be made. For more information about the Institute, its curriculum or methods of donations, please contact AMi at (817) 514-2929, email at, or visit the AMI website at 

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