General Motors Co. said Thursday the replacement ignition switch it has ordered to use in a massive passenger car recall will bear a new part number, a step that "eliminates any potential confusion ...

Note that the 10-speed and Allison-branded 10-speed automatics used in the Silverado HD and Sierra HD use a different valve body. Prior to the Gen 3 part, GM was running the Gen 1 valve body (part ...

A document released Friday by a congressional subcommittee confirms that a General Motors engineer, Ray DeGiorgio, agreed to redesign the faulty ignition switch found in 2.6 million of the automaker’s ...

A GM engineer who approved a change to faulty ignition switches in models that have now been recalled also appears to have signed off on not issuing a new number for that changed part, according to an ...