Ford sales were up 6 percent in September. Chrysler sales rose 1 percent. Total industry is expected to be down about 5 percent.
An early Labor Day helped August car sales, at the expense of September.
The Allegan health and beauty products maker Perrigo Co. (Nasdaq: PRGO) reported record sales and net income for the fourth fiscal quarter and fiscal year ended June 29.
Sales are expected to grow, but economy and high car prices remain a risk.
Chrysler and Ford sales up 11 percent in July. GM sales up 16 percent.
Dow Corning Corp. Wednesday announced revenue of $2.69 billion and net income of $149 million for the first half of 2013, both down from a year earlier.
Grand Rapids-based Open Systems Technologies Inc. announced this week the opening of a new branch office at 28 W. Adams Ave., Detroit, on the 17th floor of the Grand Park Centre building.
Dow Chemical Co. eported revenue of $14.58 billion for the second quarter ended June 30, up from $14.51 billion a year earier. Due to a massive one-time payment, net income skyrocketed to $2.44 billion or $1.87 a share, up from $740 million or 55 cents a share a year earlier.
Ford sales up 13 percent, Chrysler sales rise 8 percent, GM up 6 percent. Imports see similar gains.
Advanced Photonix Inc., the Ann Arbor manufacturer of optical and electronic data transmission equipment and terahertz instrumentation, Monday reported a larger loss on a sales slump for the fiscal year ended March 31.