General Motors Chairman and CEO Rick Wagoner exits the Chevrolet Camaro concept vehicle after cruising in the 12th Annual Woodward Dream Cruise in Royal Oak, Michigan on August 18, 2006. Wagoner announced last week that GM would again start production of the Chevrolet Camaro. (UPI Photo/John F. Martin/General Motors)

United Auto Workers have not said what contract issues are on the table at the Delta Township facility, The Detroit Press reported. Despite the contract reached last fall with the Big Three automakers, most UAW locals are still negotiating on the local level, the newspaper said.

Doug Rademacher, president of UAW Local 602, told the newspaper talks have broken off and he didn't know when they would restart.

But Rademacher rejected any notion that the strike is part of a union strategy to get GM into the dispute with parts-maker American Axle & Manufacturing Inc., where workers walked off the job in February.