Local contracts -- as opposed to the national agreement -- concern work-rule, seniority and other non-economic issues. The UAW Local says that GM isn't following the blueprint of the national agreement and is pushing for too much. GM says it is negotiating in good faith.
And Fairfax isn't the only plant affected. Strikes and idling due to rejected contracts have taken place at GM plants in Parma, Ohio, Lansing, Michigan, and Detroit-Hamtramck. Those interruptions have halted production of the Buick Lucerne and Enclave, Cadillac CTS, Saturn Outlook, and GMC Acadia. The Hamtramck plant is calling workers back, which will get the Lucerne and CTS in production again, but now the Malibu is on the block. GM has a 37-day supply of the hot commodity, and it also has another plant that builds Malibus. If GM and UAW Local 31 can't come to an agreement, Malibu production at the Fairfax plant will cease tomorrow.
[Source: Automotive News - Sub. Req.]