1 mile is too many for a Blazer. They are absolutely terrible vehicles.
Consumer Reports testing showed that the Blazer's brakes were inferior and the body leaned a lot in hard cornering. The 1998 models received better brakes but still had cumbersome handling, a so-so ride, and sloppy fit and finish. The Blazer also received a "Poor" rating in an IIHS offset-frontal crash test. The 4.3-liter V6 engine feels lively, but fuel economy is poor even by the paltry standards of the class. The TrailBlazer essentially replaced the Blazer in 2001. Recent used Blazers are likely to have been in rental fleets. Blazers/Trailblazers are also the LEAST reliable vehicle that consumer reports tests. Avoid, avoid, avoid.