× 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 Silverado 1500 LS 5.3L MIL Lamp on
Posted to GM Driveability on 1/27/2011 24 Replies

codes p0171 & p0174 always come back after drive cycle is complete. truck never has a missfire, poor performance, or bad idle. looked for tsb on this problem & did not find any. we suspect intake leak or poor injector performance but can not nail it down. hopi...

24 Replies Received (View Replies)

  Related Documents & Media  2003 Chevrolet Silverado 1500 LS

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Silverado 1500 LS

VIN 2GCEK19T13
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways
Misc.4WD

Trouble Codes

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

car Vehicle Data

2003 Chevrolet Silverado 1500 LS

VIN 2GCEK19T13
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways
Misc.4WD

Trouble Codes

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