Acting with surprising swiftness, General Motors has repudiated the silly decision we wrote about yesterday, the one that would have officially done away with the nickname “Chevy” and required that employees refer to the division and its products by the formal name “Chevrolet.” Good for GM.

We don’t believe for a second that the memo reported in the New York Times was simply “poorly worded” or that the memo was just a “rough draft” and “a bit of fun,” as GM said.

But at least GM had the sense to run from the “Chevy” decision as fast as it could.

Now comes the hard part: GM has to show that other decisions will reflect a far better understanding of customers than the brief “Chevy” debacle did.