Any issues with the 2019 5.3 Flex Fuel Engines?

[seabas22]

Are there any issues or drawbacks with the 5.3 Flex Fuel engines?

 

[swathdiver]

Are there any issues or drawbacks with the 5.3 Flex Fuel engines?

The weak link is the AFM system on the L83 but it is far more reliable than previous generations and the majority are trouble free throughout their service life.