They have GM's HFV6 (High Feature V6) in them. This engine has had a few hiccups (timing chain issues) early in it's life, but they're pretty solid these days. I work for a Cadillac dealer, and everything but the Escalade has the HFV6 available in it, even twin turbo in the XTS. This engine mated to the virtually trouble free 6L series of transmissions should be a pretty reliable package. As long as they got rid of all of the Isuzu like interior and driveline stuff, this should be a pretty good truck. The recalls have been minor stuff, like and airbag module reprogram, and a hood hinge torque check. Wait a few months and see how many recalls we actually get for them as they tweak the build process.