The reinstatement of earnings guidance provides investors with clarity and confidence about the company's future performance. The $10 billion share repurchase program signals a strong balance sheet and excess cash flow, which is typically viewed positively by investors as it can increase earnings per share. Additionally, the 33% dividend increase demonstrates a commitment to returning value to shareholders and suggests confidence in the company's financial health. These factors combined are likely to result in a positive short-term impact on GM's stock price.