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2003 Chevrolet Silverado 3500 LS 6.0L MIL Lamp on
Posted to GM Driveability on 5/4/2021 5 Replies

Got this truck in for fuel gauge always reading empty. Had code P1172. Erased code and fuel gauge worked. Replaced vent valve per tsb and in couple days was back with same code. Warrantied out rear pump as customer had previously replaced and it emptied th...

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car Vehicle Data

2003 Chevrolet Silverado 3500 LS

VIN 1GBJK34U93
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P1172Air Fuel Sensor (Bank 1 Sensor 1) Circuit Out-Of-Range High
Open Help Request

car Vehicle Data

2003 Chevrolet Silverado 3500 LS

VIN 1GBJK34U93
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On

Trouble Codes

P1172Air Fuel Sensor (Bank 1 Sensor 1) Circuit Out-Of-Range High