2012-Chevrolet-Impala-80.jpGeneral Motors said on Monday that it will recall 3.16 million midsize and large cars to modify their ignition keys to prevent the problem that triggered a recall of 2.19 million U.S. small cars in February and March.

The defect is linked to 13 deaths and 54 crashes in the previously recalled cars. In the Monday recall, GM says it knows of eight crashes and six injuries, but no deaths.

The switches in the latest action were approved by Ray DeGiorgio, the same now-fired GM engineer who oversaw the switches in the earlier, small-car recall, GM said.

GM forecast that it now will have to take a $700 million charge against second-quarter earnings to pay for the recalls, up from the $400 million it forecast earlier this month.

The recall of the 2000 to 2014 models in the U.S. is because if the key is carrying extra weight and is jarred, the ignition switch might move out of the "run" position, shutting off the engine and disabling the airbags.

That's the same problem involved in the earlier small-car recall.

In this case, though, GM doesn't plan to replace the entire ignition switch. Instead, it will use an insert that fills a slot on the head of the key and leaves only a small hole for a key ring.

GM says that reduces the leverage on the key, making it unlikely to rotate out of "run" if the car hits a pothole or railroad tracks too fast or otherwise has a "jarring road event."see more at firstcoastnews.com