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2004 Chevrolet Express 1500 5.3L MIL Lamp on
Posted to GM Driveability on 5/10/2011 12 Replies

This van came in for state inspection and failed for the mil being on with codes p0174 & p0171. Ive smoke the intake checked all 02 sensors, mass airflow sensor, fuel pressure (i even checked the amps the pump was pulling 9.5amp)and i noticed that intake gaske...

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  Related Documents & Media  2004 Chevrolet Express 1500

 
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Express 1500

VIN 1GCFG15T84
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIdle

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Express 1500

VIN 1GCFG15T84
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIdle

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)