How many miles can I expect to get out of the life of an 03 Trailblazer. I am looking to buy one from a friend for a very good price, however the mileage is pretty high. How many miles can I expect to get? I need to decide if it is worth it, or if I should find something else. Thanks for any help!

Welcome to AF
What is the mileage and maintenance history?
After a 100K the value of a vehicle goes way down.
The engine if it has proper maintenance is usually good for well over 200K
But other stuff will usually need repaired over 100K and sometimes before that.
Proper maintenance and good repairs you can get over 200-250K out of it.
A transmission repair can run you in he 2K range and other small stuff will cost you 250-500 a lot of times.
A good Old DIY repair service along with good maintenance does help cut down on the cost of repair.
Good Luck
MT