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2001 Chevrolet Blazer LT 4.3L MIL Lamp on
Posted to GM Driveability on 2/1/2011 22 Replies

Ok , this truck is a PROBLEM. I have lean codes on both banks. the fuel trims climb instantly when reset (cold 18-20%) once in closed loop 18-20% til long term hit 10-15 then short goes to 2-5. I know this has to be a common component that effect both bank. so...

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  Related Documents & Media  2001 Chevrolet Blazer LT

 
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car Vehicle Data

2001 Chevrolet Blazer LT

VIN 1GNDT13W21
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

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

car Vehicle Data

2001 Chevrolet Blazer LT

VIN 1GNDT13W21
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

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