Chevy Trailblazer: P0171 and P0174 Diagnosis | Drivetrain Resource

BDFHYK E3549M Electric Fuel pump module assembly Compatible with 2003-2005 Buick Rainier/Chevrolet SSR/Chevrolet Trailblazer/Chevrolet Trailblazer EXT/GMC Envoy/GMC Envoy XL 4.2L l6 5.3L V8

FAERSI Ignition Coil Replacement for 2002 2003 2004 2005 2006 Chevy Trailblazer Colorado Chevrolet GMC Envoy Canyon Isuzu Ascender Saab 9-7x, UF303, C1395

TRQ Fuel Pump Module Assembly Compatible with 2005-2006 Chevrolet Trailblazer EXT GMC Envoy XL 2005 Envoy XUV Isuzu Ascender

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Check Engine Light is On: 2002 Chevrolet Trailblazer LT 4.2L 6 Cyl.

Check Engine Light is On: 2003 Chevrolet Trailblazer EXT LT 4.2L 6 Cyl.