× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2003 Chevrolet Express 1500 5.3L MIL Lamp on
Posted to GM Driveability on 2/23/2006 12 Replies

Any GM tech's out there. Help!! This van came in with a mass air flow code and lean fuel trim codes. The truck was running rough and stalling. We replaced the mass air flow sensor and the mass air flow code went away the truck ran much better. The mil light ca...

12 Replies Received (View Replies)

  Related Documents & Media  2003 Chevrolet Express 1500

 
Message Closed w/Summary

car Vehicle Data

2003 Chevrolet Express 1500

VIN 1GCFG15T93
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / Sequential port fuel injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Message Closed w/Summary

car Vehicle Data

2003 Chevrolet Express 1500

VIN 1GCFG15T93
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / Sequential port fuel injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)