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2005 GMC Sierra 1500 5.3L MIL Lamp on
Posted to GM Driveability on 6/28/2010 17 Replies

Vehicle has been to my shop on three occasions with MIL on and PO171 stored. Vehicle has no running problems. All of the data looks normal. Fuel trims always look in spec. Can not find any vacuum leaks. I can clear the codes and MIL will stay off for about a w...

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  Related Documents & Media  2005 GMC Sierra 1500

 
Message Closed w/FIX

car Vehicle Data

2005 GMC Sierra 1500

VIN 2GTEK13T75
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

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

car Vehicle Data

2005 GMC Sierra 1500

VIN 2GTEK13T75
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0171Fuel System Too Lean (Bank 1)