GM expanded its ignition switch recall today to include another 970,000 vehicles.

After further investigation, General Motors added another 970,000 vehicles to its faulty ignition switch recall as 90,000 cars may have had good switches replaced with faulty ones.

The recall impacts all versions of the 2008-2010 Chevrolet Cobalt, Saturn Sky, Saturn Ion, Pontiac Solstice and Pontiac G5. It also includes the 2008-2011 Chevy HHR. According to GM, the recall impacts 824,000 cars in the U.S., 132,000 in Canada, 5,700 in Mexico and 9,000 in other parts of the world.

The recall initially included versions of those vehicles from 2003-2007.

The company sold 95,000 faulty switches to dealers and aftermarket wholesalers, and 90,000 were used. However, since all of the ignition switches have the same part number it’s difficult to determine which ones are good or bad. Rather than take a risk, GM elected to expand the recall.

“We are taking no chances with safety,” said GM CEO Mary Barra in a statement. “Trying to locate several thousand switches in a population of 2.2 million vehicles and distributed to thousands of retailers isn’t practical.

“Out of an abundance of caution, we are recalling the rest of the model years. We are going to provide our customers with the peace of mind they deserve and expect by getting the new switches into all the vehicles.”

Owners of the affected vehicles will receive notification in the mail the week of April 21, GM said. GM dealers will replace their ignition switch free of charge as parts become available.

(Ford gave Alan Mulally a 10% raise last year. For more, Click Here.)

Customers who paid to have their ignition switches replaced will be eligible for reimbursement. Until the recall has been performed, customers are urged to remove all items, including the key fob, from their key rings, leaving only the vehicle key.

(Click Here to check our GM’s decision to halt the sale of 2013 and 2014 Chevy Cruzes.)

The announcement was the third bit of negative news about the automaker today. Earlier it announced it was recalling more than 650 2014 Cadillac ELRs due to an issue with the stability control electronics.

(To see Mercedes’ plans to expand its Sprinter van line-up in the U.S., Click Here.)

It was also discovered the automaker issued a “stop-sale” letter on 2013 and 2014 Chevy Cruzes equipped with a 1.4-liter turbocharged four-cylinder engine. The action isn’t all that unusual, but no reason was given for the move, which has raised suspicions.