Hi Scotty, I'm looking for another route vehicle and my brother in law has a 2004 Trailblazer he bought off a member of his church, 55K miles and excellent condition from the photos. He's asking 7k. Any pitfalls or major issues you know of with this model? I know you aren't a huge GM fan, but, wanted an honest opinion. Thanks!
Sounds like an awful lot of money for a 20-year-old Trailblazer, and the low mileage is suspicious.
GM vehicles were built better back then than they are today but vehicles don't like just sitting around (if mileage is accurate) and rubber parts deteriorate with time. If you proceed you definitely need to have a good mechanic check it out thoroughly before purchase.
This should give you an idea of common problems, more info can be found via your favorite search engine:
https://www.carcomplaints.com/Chevrolet/Trailblazer/2004/
Any pitfalls or major issues
failing fuel gauges
https://static.nhtsa.gov/odi/inv/2010/INOA-DP10001-38200.pdf
2 recalls: failing brake lamps, turn signals