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2002 Chevrolet Trailblazer LS 4.2L MIL Lamp on
Posted to GM Driveability on 9/20/2005 12 Replies

This one has a p0171 bank 1 lean. Fuel pressure is 54 psi. LT trim is at 20+ at idle.. I used the smoke machine 3 different times with no results.. Tried spraying down the intake, vac hoses, injector rail, t-body, etc. with no changes in fuel trim numbers. I a...

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car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S32
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Message Closed

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S32
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)