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2001 Chevrolet Express 2500 5.0L Hesitation, Surge, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 5/10/2008 15 Replies

help!

we had the trans. rebuilt about 1 week before this problem started. the van is loaded heavy but since the c.e.l came on it has lost power and fuel mileage. we have checked for vacum leaks and any unmetered air entering the engine. we also replaced the f...

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  Related Documents & Media  2001 Chevrolet Express 2500

 
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Express 2500

VIN 1GCFG25M21
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MPI
EmissionsOBD-II Compliant
SymptomsHesitation, Surge, Poor Fuel Economy, MIL Lamp On

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
Message Closed w/FIX

car Vehicle Data

2001 Chevrolet Express 2500

VIN 1GCFG25M21
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / MPI
EmissionsOBD-II Compliant
SymptomsHesitation, Surge, Poor Fuel Economy, MIL Lamp On

Trouble Codes

P0101Mass Airflow Sensor Range/Performance