通用汽车股价涨幅扩大，盘前最新上涨8.2%。

Core Insights - General Motors' stock price has seen a significant pre-market increase of 8.2% [1] Group 1: Stock Performance - The latest pre-market price for General Motors is $62.740, reflecting an increase of $4.720 or 8.14% [2] - The stock opened at $58.540, with a high of $58.555 and a low of $57.680 during the previous trading session [2] - The market capitalization of General Motors is approximately $55.221 billion [2] Group 2: Trading Volume and Activity - The trading volume in the pre-market session reached 18,790 shares [3] - The stock has a turnover rate of 1.07% [2]