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2003 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on
Posted to GM Driveability on 9/22/2010 16 Replies

Hello, We have been fighting this one. When code first set we could not get the vent solenoid to vent so we did the TSB, it lasted for about 2 weeks then 446 again. The second time my tech found the fuel tank pressure sensor indicated 10 inches of vacuum,I thi...

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  Related Documents & Media  2003 Chevrolet Silverado 1500 LT

 
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Silverado 1500 LT

VIN 1GCEK19T03
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

P0446EVAP Vent Control System Performance
Message Closed w/FIX

car Vehicle Data

2003 Chevrolet Silverado 1500 LT

VIN 1GCEK19T03
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

P0446EVAP Vent Control System Performance