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GM’s OnStar Asks for More Testing of Falcone’s LightSquared

General Motors Co. asked U.S. regulators for more testing of Philip Falcone’s LightSquared Inc. wireless network after early trials interfered with vehicle tracking through its OnStar system.

GM wants more testing of ways to mitigate LightSquared’s interference of OnStar’s global-positioning system that can track its 6 million subscribers’ vehicles in the event of crashes and other emergencies, the Detroit-based automaker said today in a letter to the Federal Communications Commission.