Round Rock, TX owner Danny Duarte thought his 2020 GMC Sierra 1500 was "solid" after 88K miles and 5K oil changes. Then, the ...

A lifter failure in this Tahoe leads to cylinder head removal to find the root cause. See what went wrong and how it is ...

A common issue with the 5.3 engine is AFM lifter failure. In this video, we diagnose the problem and replace the failed AFM lifter and pushrod to get the engine running properly again. Follow along ...

The latest in the Sub lifter failure saga: I picked up the Sub at the dealership on 6-13-23. Had a long talk with the GM, SM and Chief Mechanic, who did the work. He was very experienced and seemed to ...

Here is where my Sub lifter repairs stand now: The dealer GM and SM met with GM representatives. GM authorized warranty repair to replace all 16 lifters. This is the second replacement of all lifters.