Shade Tree Garage is different from most dealer service facilities. Our technicians are all accessible, so if you have questions or concerns you would like to discuss with the person who works on your car, you can speak with them directly. We prioritize customer service above all else, ensuring that your needs and concerns are addressed promptly and personally. Your satisfaction is our number one priority, and we’re committed to making sure you feel confident and well-informed throughout the entire service process.
Learn about the Shade Tree Garage team below.
 | John O’Connor is the owner of Shade Tree Garage. John has been married to Wendy since 1973, has four wonderful children named Katie, Kristen, Daniel, & Kelly and five grandchildren. When he was younger, he loved to take cars apart. In 1975, he became an ASE-certified Master Technician. He has been a Bosch-approved service center since 1989, and is also a member of The Repair Excellence Council (2001). He participates in the Elite Group, which is a peer review process that helps automotive repair shops stay on the leading edge of business and industry issues. John is a member of the Morristown Chapter of Business Network International, the Morris County Chamber of Commerce and the Chamber's Business Development Committee. He is also a member of the Mechanic's Education Association as well as the BMW, Porsche and Volvo Car Clubs of New Jersey. |
 | Marge McEntee has returned to Shade Tree Garage in October 2015, as the company’s Service Advisor. Marge has been a part of the Shade Tree family on and off since 1988. She will handle the daily estimating, parts ordering and contacting the customers with their vehicle estimate. Marge has been married to Phil since 1986. Marge is suffering from empty nest syndrome since both her children are graduated from college and living on their own. Her daughter was recently married and is expecting her first grandchild! |
 | Jim Ambrosi returned to Shade Tree Garage after a 15-year break. Jim grew up in a family business specializing in small engine repairs, and began working in the automotive industry in 1978. Jim came to Shade Tree in 1992, during which time he became a Bosch and ASE Master Technician. He worked here until 2000. Then, he and his wife relocated to San Diego, CA, for the weather. While there, Jim worked in an independent European repair shop. In 2015, they moved back to NJ. We are happy to welcome Jim back to the Shade Tree family. He has a wealth of knowledge concentrating heavily on BMW, Porsche, Mercedes-Benz and Audi. Jim has always loved repairing anything mechanical, from lawn mowers to automobiles. |
 | Brian Garcia (Auto Technician) started with us while he was still attending Morristown High School and the Morris County Vocational Tech Auto Body Collision program. Brian graduated in June of 2019, and joined Shade Tree Garage full time. He is a licensed NJ Motor Vehicle Inspector. He has 3 years’ experience with us. Brian loves to work on his own car on his off time. He enjoys football and snowboarding. And a fun little fact -- Brian also plays the guitar. |
 | Niall Doherty (Auto Technician) joined Shade Tree Garage in September of 2021. He graduated from Mendham High School in 2021. Niall loved to take things apart and see how they work from a young age. He admits that when he was younger, they didn’t always go back together right. But, that has all changed and he is perfecting his craft each day. He is a wonderful addition to our staff. On the weekend, you might find Niall on a golf course in your area. |
 | Ken DeGraw (Auto Technician) is new to Shade Tree Garage, Ken has over 40 years of experience as an auto technician. He owned his own business for 11 years and worked at Moro’s for 21 years until they closed. Married for 23 years and a father of three, Ken is an avid freshwater fisherman and bowler who loves most sports. |
 | Julisa Umanzor is the newest member of Shade Tree Garage. She joined the team in September 2022, as a Service Consultant. She is a Morristown native and graduated Morristown High School in 2017. After graduating, she worked as a Sales Consultant for State Farm Insurance. Julisa has always loved cars, so when the employment opportunity presented itself, she jumped. She has been a very positive addition to the Shade Tree family. Julisa is attending the “Elite Master Program for Automotive Service Consultants.” The course consists of in-person training located in San Diego, and then there is continuous training remotely for 6 months. Included in her many beautiful qualities, is her attention to detail. Julisa is proficient in both English and Spanish. She also loves her cat and reading. |
We’re always looking for motivated and friendly people to join the Shade Tree Garage team of professionals. If you believe you would be a great addition to our organization, please contact us.