General Motors Corp. reaches a local labor agreement at a powertrain facility in Ohio, but continues to wrestle with a strike at two of its most important assembly plants in Michigan and Kansas.

The auto maker reached a deal with Local 211 in Defiance, OH. The facility’s 1,307 United Auto Workers union members build cylinder heads, blocks, crankshafts and drive sprockets. Sixty-three percent of the membership voted in favor of the contract, the Detroit Free Press reports.

GM still faces walkouts at its Delta Twp., MI, and Fairfax, KS, assembly plants. Delta Twp. builds the popular Buick Enclave, GMC Acadia and Saturn Outlook midsize cross/utility vehicles. Fairfax assembles the hot-selling Chevrolet Malibu and Saturn Aura.

The auto maker has struggled to meet demand for the redesigned-for-’08 Malibu since its launch in October. Like the Enclave and Acadia, it’s one of few GM products selling without incentives.

GM also continues to negotiate local agreements with three other facilities where the UAW has extended strike notices. They include a Warren, MI, transmission plant that builds a 6-speed transmission that appears in a number of GM products, and stamping plants in Grand Rapids, MI, and Mansfield, OH.

GM reached a national, 4-year collective bargaining agreement with the UAW last year but still must iron out plant-specific issues at the local level.