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2003 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on
Posted to GM Driveability on 10/1/2010 13 Replies

Engine light on intermittantly.

Today we tested and system was not holding pressure but during test, it started holding pressure, but we did not change anything.

Changed evap valve as per TSB twice now (thought might have been sticking). Light came back on. ...

13 Replies Received (View Replies)

  Related Documents & Media  2003 Chevrolet Silverado 1500 LT

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Silverado 1500 LT

VIN 2GCEK19T33
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0422Catalyst Efficiency Below Normal (Bank 1)
P0463Fuel Level Sensor Circuit High Voltage
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Silverado 1500 LT

VIN 2GCEK19T33
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0422Catalyst Efficiency Below Normal (Bank 1)
P0463Fuel Level Sensor Circuit High Voltage