Some owners of GM full-size SUVs, like the Chevy Tahoe, GMC Yukon, and others, have noticed an annoying humming sound coming from the headlights.

Jason Signor was preparing for a celebratory dinner in Manhattan as the final pieces came together for the sale of a large chunk of his company’s senior living business when everything went haywire.

It you have the tools you can fix the HEMI tick at home for under $400. But it's easy to make the problem much worse.