(1) Knock Sensor Front Fits 2003-2005 Chevrolet Trailblazer EXT GMC Envoy XL

For 2003-2006 Chevrolet Trailblazer EXT MAP Sensor Replacement AP 77523WFBK 2004

Replacement 44ZX73D Knock Sensor Fits 2005-2006 Chevy Trailblazer EXT 5.3L V8

For 2005-2006 Chevrolet Trailblazer EXT Knock Sensor 42956ZPTD 5.3L V8

Replacement 65CC81T Knock Sensor Fits 2005-2006 Chevy Trailblazer EXT 5.3L V8

Replacement AP 76SQ43P Knock Sensor Fits 2005-2006 Chevy Trailblazer EXT

For 2005-2006 Chevrolet Trailblazer EXT Knock Sensor 88965WC 5.3L V8

Engine Knock Detonation Sensor for Buick Cadillac Chevy GMC Hummer Isuzu Olds