General Motors has forced out several executives and managers, including the head of its global engine operations, as the company’s recall of vehicles in India raises questions about improper emissions tests.

G.M. said on Friday that it had dismissed the employees for violating unspecified company policies. One of the executives was Sam Winegarden, a vice president in charge of engine programs, who retired this week after 44 years with G.M., the nation’s largest automaker.

The management shake-up came after the Indian government began an investigation into the recall this week of 114,000 Chevrolet Tavera utility vehicles sold by G.M. in India.

Indian news reports said the government was investigating whether G.M. had improperly manipulated the weight and engine performance in the Tavera during emissions testing and certification.