Vosborg wrote:... a friend of mine is telling me they have massive front end problems, ...
Entirely dependent on how hard you wheel it.
Would love to see references from your friend's research on the platform. Links from trailvoy.com, gmtnation.com, and here would carry the most weight. As would experience in a GM dealership or a high volume independent shop. Listening to folks in line at the parts store or other non-owners....not so much.
In general, there are some very subtle issues to be aware of, including the throttle body needing a cheap but very specific cleaning process, thermostats that love to stick open, undergreased front axle disconnect assemblies, and issues with aging motor mounts giving a 10 Hz rotational vibration at idle when you're in DRIVE, not so much in NEUTRAL.
For new owners who may need to catch up on deferred (neglected) maintenance from previous abuse, I highly recommend also joining gmtnation.com. You might find trailvoy.com in a Google search for trailblazer issues, but that site's been a ghost town since last December, when a group of us started gmtnation. It's a very tight community for all GMT360s, like this one is for offroading enthusiasts. Trailvoy is great for the archives of historical problem discussions, but it's not worth posting questions there - the answers are often lame nowadays.