The lawsuit seeks potentially billions of dollars in fines.
Purple LED lighting will shine from the GM Renaissance Center in downtown Detroit to focus awareness on premature births and symbolize hope for a healthy start for more babies.
For the owners of 189,000 General Motors SUVs, the days of parking them outside the garage for fear that they could catch fire will soon come to an end.
An email chain, released Monday by an attorney suing GM, again raises questions about how forthcoming GM has been with safety regulators and lawmakers.
U.S. safety regulators are ordering Japanese auto supplier Takata Corp. to provide more information about air bags that can explode and shoot shrapnel toward drivers and passengers.
So far, more than 12 million vehicles worldwide with air bags made by Japanese parts supplier Takata Corp. have been recalled for the problem.
The August flooding caused severe damage to the Warren facility and displaced nearly 19,000 employees.
The automaker posted a net profit of $1.38 billion, or 81 cents per share, from July through September.
The inflator mechanisms in the air bags can rupture, causing metal fragments to fly out when the bags are deployed in crashes.
A defect in the devices can possibly kill or injure the driver or passengers.