By Liz White, UT staffSouthfield, Michigan-Major automotive interiors supplier Lear Corp. had net sales of $4400 million, but made a pretax loss of $340.1 million, for the fourth quarter of 2005. On similar sales in Q4 2004, Lear said, it made a pretax gain of $159.5 million. High notes for Lear were its fifth consecutive year as J.D. Power's highest-quality major seat supplier and the award of Best-In-Class launch execution and breakthrough technology for the all-new GMT900-"the highest-volume light truck platform in the world," said Lear. Lear said while it managed to add new business globally, this was "largely offset by lower production on high-content Lear platforms in North America." And it blamed its poor operating performance on an "adverse platform mix in North America," as well as higher costs for raw material and energy, and "continuing cost pressures throughout the entire supply chain."For the full year, Lear's net sales of $17 100 million were accompanied by a pretax loss before of $1181.2 million, Before impairments, restructuring and other special charges, pretax income was $102.6 million. For 2004, Lear's sales levels were the same, but it made a pretax profit of $550.2 million, Lear, which makes complete seat systems, electronic parts and electrical distribution systems and other interior products, has over half its sales in North America.. The supplier listed a value for content per vehicle which has risen in North America for Q4 and dropped in Europe, as follows-with similar changes seen for the previous year: Lear content per vehicle, North America, 2005 $586; Q4 2005, $633;Lear content per vehicle, Europe, 2005 $347; Q4 2005, $333. "