‘Can y’all guess?’: Mechanic puts 2 GMC Denalis on lifts and looks for the problem. He discovers they have the same little-known issue

A GMC spun bearing issue has made these two trucks twins in the worst way.

Texas-based GM Diesel technician Duradoc (@duradoc) literally shined a light on the problem on social media with a now-viral video. In it, he shows the problem, one of the worst engine dilemmas you can get, shared by the two vehicles.

Duradoc published the video to his TikTok account on Saturday. It currently has over 1.8 million views.

He seems to know what the problem is

The video begins with a view of the two trucks.