2003 Chevrolet TrailBlazer Performance Chip Tuners

Features:

Handheld tuner gives your vehicle significant hp and torque gains, with better fuel economy, too. 2.8" Color, hi-res screen with d-pad lets you access pre-loaded tunes, monitoring capabilities, DTCs, and calibration settings.

Features:

Handheld tuner gives your truck/SUV significant hp and torque gains, with better fuel economy, too. 2.8" Color, hi-res screen with d-pad lets you access pre-loaded tunes, monitoring capabilities, DTCs, and calibration settings.

Features:

Plug this monitor into your vehicle's OBD-II port to get parameters (PIDs), diagnostic trouble codes (DTCs), MPG stats, and engine performance tests. Slim case has a hi-res color screen and 6-button control with user-friendly d-pad.

Features:

Plug this monitor into your vehicle's OBD-II port to get parameters (PIDs), diagnostic trouble codes (DTCs), MPG stats, and engine performance tests. Slim case has a hi-res color screen and 6-button control with user-friendly d-pad.