General Motors enlisted the help of a team at NASA to conduct a review of the automaker’s ignition-switch testing, according to a source familiar with the recall investigation.

General Motors got its first internal report on ignition-switch problems in small cars in 2001, while developing the Saturn Ion, the automaker said in a letter to U.S. regulators. GM thought it ...

GM has issued a fix for the 2024 GMC Sierra HD to correct a glitch in the Electronic Control Module that can lead to incorrect data during emissions testing.