Jim Minick, 51, will be sentenced to eight months probations and fined $1,325. He arrested for DUI in Pittsfield Twp. last month.
He had been suspended from the program after being arrested but was recently reinstated.
Police say he was arrested at Airport Blvd. and State Street. Investigators said they were called to the intersection on a report of a single-car crash.
According to police, Minick told them that another car went into his lane and he swerved to avoid it and crashed into a ditch.
He told police the other car drove off and did not hit his 2015 GMC Yukon.
Police said they believed Minick had been drinking and they asked him to take a breathalyzer. He refused and police said they drew blood and arrested him.
Minick previously released this statement to FOX 2:
"I'm not going to make any excuses. I'll face the consequences of my actions. I regret the difficult position in which this has put my family and my employer."
Minick is a retired Marine, and was hired last January shortly after Jim Harbaugh accepted the schools' head football coach position.
Minick grew up with Harbaugh in Ann Arbor.
After news of the arrest came out last month, Harbaugh released this statement:
"Jim Minick made a regrettable decision last week and was arrested for operating a vehicle while intoxicated. Jim makes no excuses, regrets this decision and understands the consequences for his actions. Due to the serious nature of this event, Jim Minick has been suspended indefinitely and we ask for your understanding while we address the situation."