Shouldn't their super sophisticated automated tests have caught this? I guess they're too busy playing politics to preserve their easy jobs of maintenance and support. There's a lot of money behind this failure.
"Imagine producing an engine so poor that it's led to over 600,000 vehicles being recalled and has been responsible for a dozen crashes and injuries, and you'll be in GM's shoes."
Read More: https://www.slashgear.com/2053136/gm-v8-engine-recall-combined-class-action-lawsuit/