check your exhaust manifold gasket, and for a broken bolt on it tooI don't know. I'm at 103k miles. Getting some weird ass ticking from passenger side of engine.
The 2007-2014 5.3's had AFM? Is that all of them, or just some?
I don't remember AFM being mentioned for my 2007 Silverado, nor my 2011. Both went well over 100,000 miles with no problems at all.
It is obviously propaganda that Chevy's are less reliable than any of the competition. A vehicle cannot be better than 100% reliable and trouble-free.
This describes all of my Chevy trucks, including a 1993 V6. If you look at the sales stats, GM has sold more than 5 million T1 Chevy trucks, AFAIK.