2012 Chevrolet Trailblazer pinouts
The connector/pinout information may be applied to the Chevrolet model Trailblazer
General Motors (GM) OBD II diagnostic interface pinout for Chevrolet Trailblazer produced after 2002 obd-II pinout for Buick, Chevrolet, Cadillac, Pontiac, GMC, Holden