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2003 GMC Envoy SLE 4.2L Hesitation, Stall, MIL Lamp on, Runs lean
Posted to GM Driveability on 6/21/2011 13 Replies

This vehicle has no amss airflow - it calculates this figure. Calculations are off. At wide open throttle rpms won't go over 4000 and this only after warmed up. At 4000 rpm wot, airflow is calculated at 40 grams per second. Should be more like a hundred +. How...

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  Related Documents & Media  2003 GMC Envoy SLE

 
Message Closed w/FIX

car Vehicle Data

2003 GMC Envoy SLE

VIN IGKDT13S53
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation, Stall, MIL Lamp on, Runs Lean
OccursAlways

Trouble Codes

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

car Vehicle Data

2003 GMC Envoy SLE

VIN IGKDT13S53
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHesitation, Stall, MIL Lamp on, Runs Lean
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)