Michigan pays your PIP benefits up to the coverage level you chose and lets you sue for pain and suffering only after death, serious impairment or serious disfigurement
Michigan's no-fault rules are in MCL 500.3135 (the tort threshold), 500.3107c (coverage levels) and 500.3107 (the benefits). Deadlines are in 500.3145 and 600.5805.
Read what Michigan PIP covers, what counts as a serious impairment of body function, and how the one-year deadline and one-year-back rule work. If the other driver has little insurance, see Michigan UM/UIM stacking and Michigan medical liens.