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2004 GMC Sierra 1500 SLE 5.3L Excessive Emissions, Poor Idle Quality
Posted to GM Driveability on 7/22/2015 13 Replies

Truck came in with no reverse. I drove it into the shop and had a tech replace the trans. Since then the truck will barely idle once in closed loop. Fuel trims go to +55 upstream O2's read 0 MV and down stream are at 950 MV. I tried a known good MAF and a MAP ...

13 Replies Received (View Replies)

  Related Documents & Media  2004 GMC Sierra 1500 SLE

 
Message Closed w/FIX

car Vehicle Data

2004 GMC Sierra 1500 SLE

VIN 2GTEK19T44
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality
OccursAlways
Misc.70000 on Engine

Trouble Codes

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

car Vehicle Data

2004 GMC Sierra 1500 SLE

VIN 2GTEK19T44
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality
OccursAlways
Misc.70000 on Engine

Trouble Codes

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