2002 Chevrolet Trailblazer EXT with Rear A/C;. 2003 Chevrolet Trailblazer EXT Submodel: LS; Engine: 4.2L L6 DOHC; EngineCode: LL8; EngineVIN: S; with Rear A/C;. 2003 Chevrolet Trailblazer EXT Submodel: LS; Engine: 5.3L V8 OHV; EngineCode: LM4; EngineVIN: P; with Rear A/C;.
