2003 Chevrolet Silverado 1500 "evap system large leak" Questions

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Question about Chevrolet Silverado 1500

2 Answers

...EVAP) System Large Leak Detected The DTC P0455 is a large leak in the EVAP system. A blockage or restriction in the EVAP purge solenoid valve, purge pipe, EVAP canister or vapor pipe can cause this ...

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Question about Chevrolet Silverado 1500

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...EVAP) System Large Leak Detected Possible Causes: A fuel fill cap that is left OFF after a fuel fill will cause this DTC to set.A loose, missing, or damaged fuel fill cap can cause this DTC to set.A ...

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Question about Chevrolet Silverado 1500

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...EVAP system Possible Solutions: With a p0455, the most common repair is to: Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back. Otherwise, replace ...

Question about Chevrolet Silverado 1500

2 Answers

...EVAP Evap system has many parts , cannister,vent and purge valves ,fuel tank and cap, first is the fuel cap on and is the seal in good shape. You will need to inspect all vauum hoses that leave the ...

Question about Chevrolet Silverado 1500

1 Answer

...EVAP) System Large Leak DetectedThe control module tests the evaporative emission (EVAP) system for a large leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine ...

Question about Chevrolet Silverado 1500

3 Answers

...evap problem P0449 is a vent solenoid i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make sure you have power to it you should have power at all times the ground ...

Question about Chevrolet Silverado 1500

2 Answers

...system for obvious cracks, or leaks. Start with the Evap Purge line. You can identify this in the engine compartment as a plastic vacuum line about 5/16" in diameter and it has a service port on it ...

Question about Chevrolet Silverado 1500

1 Answer

...evap canister check the lines hooked to this and just do a visual inspection of hoses see if one has come off. may need to have it checked out we have a machine that hooks into system and pressurizes ...

Question about Chevrolet Silverado 1500

1 Answer

...evap.system.The vent solenoid I would replace because they go bad and will not work because they are under the vehicle in the rear of the truck.There is a bulletin for these and the vent valve is ...

Question about Chevrolet Silverado 1500

2 Answers

EVAP System problem you asked about, we have no codes & you still need a repair shop to diagnose the issue, what ever it may be. You will only have performance issues if you have a large leak &

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