HOFFMAN ESTATES, Ill. — Sears Holdings Corp. plans to close 80 more Sears and Kmart retail stores by late March, including 34 Sears Auto Centers, as part of its restructuring plan. Sears Holdings filed for voluntary Chapter 11 bankruptcy protection in mid-October and indicated at that time it would close 142 unprofitable stores by year-end 2018. Bankruptcy court officials are considering an offer by former CEO Edward Lampert to buy the firm's remaining assets for $4.4 billion. The Sears stores with auto centers targeted for closing in this latest round are: At last report, Sears' network of retail stores already has shrunk to about 500 locations, including roughly 200 with auto centers attached, according to data available on Sears' website.