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2004 Chevrolet Tahoe LS 5.3L MIL Lamp on
Posted to GM Driveability on 7/11/2014 12 Replies

I have long term fuel trims that climb to 23-25 rapidly even right after a reset. These fuel trims stay there at all rpm's and load ranges. I'm thinking I have a logic problem in the PCM Fuel tests 10% alcohol and gravity test is normal. PCM data pid reads 10%...

12 Replies Received (View Replies)

  Related Documents & Media  2004 Chevrolet Tahoe LS

 
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Tahoe LS

VIN 1GNEK13Z94
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Tahoe LS

VIN 1GNEK13Z94
Engine5.3 L / 8 cyl / FLEX
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
P0300Multiple Misfire Detected