Grand River & Power Marathon Auto Service provides auto maintenance, repair, underbody repair, diagnostics, roadside assistance, and tire services to customers in the Farmington, MI area.

We are a family owned business, that has been located here since 1990. We appreciate our customers, and have pride in our work. We work on all vehicles. Jim & Dewey Gregory have over 45 years of experience in the transmission repair industry servicing Wayne County, Oakland County, and the greater Metro Detroit area. USA Transmissions of Farmington Hills features:... Read More about USA Transmissions