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2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on
Posted to GM Driveability on 9/13/2013 26 Replies

Hey guys, I'm a little stumped here. This is the boss's trailblazer. It has stored codes for system too rich AND system too lean. I have it idling right now and STFT is -18, LTFT is +11, FT cell is +20. When I increase the rpms up to around 2000 or 3000 the fu...

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  Related Documents & Media  2002 Chevrolet Trailblazer LS

 
Message Closed

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S72
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / multi-port
EmissionsOBD-II Compliant
SymptomsCuts Out, Stall, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)
Message Closed

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S72
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / multi-port
EmissionsOBD-II Compliant
SymptomsCuts Out, Stall, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)