Steve, I have a 2019 Trail boss 5.3 and noticed during the recent cold blast we had here in N. Georgia some oil spots on the ground in the front side of the engine... of course I flipped out as I am a maintenance nut. Very quickly found GM Customer Satisfaction program notice N212326940. When I called my local dealer he agreed immediately this was the issue and made me an appointment. Mine just flipped 33k and already this is the third trip in.. very dissapointed so far with the quality issues. A few months back I had to take in in for a transmission shutter that had been going on, come to find out GM had issued another bulletin about a number of 2019 Silverado's had the wrong trans fluid put in at the factory. The flushed 3 times and put in Mobile HP FS, problem solved and no charge to me. Can't believe I didn't receive anything from GM or a recall letter. Same with this oil cooler line issue, they know about it but don't send anything out.
MC-10200186-9999.pdf