Managing entity for Cadillac Truck Service, independent third party tester for the State of Michigan.

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Contact Us

Please call us Monday through Friday from 8 a.m. to 6 p.m. at (231) 825-2533. Someone is usually in the office from 2 – 4 daily. Otherwise, please leave a message. We will return your call that same day if possible but at least by the next business day.

E-Mail:  ExcelDTT@gmail.com

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