GM orders 6 million units back; 2nd largest recall

General Motors is ordering the second-largest recall in auto industry history , involving 6.4 million midsize cars and trucks made since 1978, because of two defective bolts that could send vehicles out of control.

Vehicles included the recall all are the company's midsize cars built in 1978 , '79, and '80 and early in the '81 model run. In magnitude, the recall is second only to GM's 1971 recall of 6.7 million ca rs