OnStar Marshall.automotiveIT

OnStar President Linda Marshall told developers at the Las Vegas CES last month that they could create novel mobile applications for its various services (photo: GM)

The president of OnStar, Linda Marshall, is leaving her position slightly more than a year after assuming the job of running General Motors' connected safety, security and mobility solutions division.

Press reports say Marshall is leaving her post this week and will be succeeded by Terry Inch, OnStar's sales director, on an interim basis.

Marshall joined GM after more than two decades in the telecommunications industry. She held senior executive-level roles at both Sprint Nextel and Verizon Wireless.

The Detroit News noted that Marshall was one of the first major new appointments by GM CEO Dan Akerson. She replaced Chriss Preuss, a public relations specialist who left the post after 13 years at GM.

OnStar, once a leader in providing telematics-based safety, security and emergency calling systems, has been struggling to compete as GM's competitors increasingly roll outonin-car systems with a much broader range of infotainment offerings.

Moreover, insiders say GM, which has undergone one of the industry's biggest reorganizations since emerging from bankruptcy protection in July 2009, hasn't made up its mind where on its long list of priorities OnStar sits.

The telematics unit, which provides a suite of safety, security and infotainment functions to more than 6 million GM vehicle owners in North America and China, has been looking for ways to expand its footprint.

It has also started offering an aftermarket product for non-GM cars and in recent months has been touting plans to expand internationally.

Earlier this week, the GM unit announced an agreement with Telefonica to start offering services using the Spanish telecommunications company's GSM network.

Last year, OnStar was criticized for plans to keep a data connection to customers’ vehicles after the OnStar service was canceled. The company was forced to reverse its decision.