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2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on
Posted to GM Driveability on 12/8/2006 9 Replies

This Trailblazer has a reoccuring P0172 code. STFT & LTFT always more negative than positive. Fuel trim index fluctuates between -9 & -17 but I have never seen it as low as -35 which is what it takes to flag P0172. Even looking at freeze data it will not catch...

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  Related Documents & Media  2003 Chevrolet Trailblazer North Face

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Trailblazer North Face

VIN 1GNET16S23
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways
Misc.4WD

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Trailblazer North Face

VIN 1GNET16S23
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways
Misc.4WD

Trouble Codes

P0172Fuel System Too Rich (Bank 1)