Standard mail-in performance tunes are available for all Trailblazers, Colorados, Canyons, and virtually any other GM engine from Model Year 1996 and up.  You get increased driveability, better throttle response, and up to a 30 HP gain!   Trailblazers, Colorados, H3s, or any vehicle with an inline atlas engine are just $179. 
 
What are your options?
Disable Anti-Theft (VATS)
Reduce or Disable Torque Management
Recalibrate Speedometer
Raise idle speed
Turn off DTCs
Raise or Eliminate speed limiter
Raise or Eliminate rev limiter