Question about 1999 Chevrolet Silverado 1500

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1999 Silverado Evap Vent Solenoid

I think have narrowed my problem down to the evap vent solenoid by reading forums. I'm not sure though. All I know is that every time I fill up, the pump doesn't stop and fuel starts pouring out of the canister onto the ground. What I need to know is where to get the parts at. Websites would be helpful.

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Posted on Jan 02, 2017

  • 37 Answers

SOURCE: HAVE A TROUBLESHOOTING MESSAGE PO446

DTC P0446 Evaporative Emission (EVAP) Vent System Performance

The vehicle control module (VCM) monitors the performance of the evaporative emission (EVAP) system by applying a predetermined level of vacuum to the EVAP system and monitors the vacuum decay rate. The VCM sets this diagnostic trouble code (DTC) if the vacuum decay rate is more than a predetermined value. The VCM monitors the amount of vacuum and the amount of pressure in the EVAP system by monitoring the fuel tank pressure sensor. For this DTC, the VCM turns ON both the EVAP purge valve and the EVAP vent valve when the Conditions for Running the DTC are met. This applies an engine vacuum to a closed EVAP system. The VCM turns OFF both the EVAP purge valve and the EVAP vent valve when the system reaches a correct amount of vacuum. The EVAP system should quickly RELEASE the vacuum in the EVAP system with the EVAP purge valve OFF and the EVAP vent valve OFF (open). This test indicates a blocked or restricted EVAP vent path if the EVAP system fails to release the vacuum quickly enough.

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Posted on Dec 06, 2008

  • 275 Answers

SOURCE: 2004 Pontiac Grand Prix Evaporative Canister

you should be able to fix it look for a can near the fuel tank that has vacuum hoses coming out of it and you should be able to just buy the bad solenoid

Posted on Nov 03, 2008

MNfisherman
  • 11896 Answers

SOURCE: replacing the evap canister

It is the big black box on driver side front next to fender. It has to vacuum hoses going to it.

Posted on Jul 10, 2009

longbow243
  • 103 Answers

SOURCE: 2007 SILVERADO V6 EVAP PURGE SOLENOID

The evap purge solenoid is located on the intake manifold. The evap vent valve is located on the side of the fuel tank. If you have a P0449 or P0452 (I think) DTC, it will be the one on the tank that you need to replace.

Posted on Sep 01, 2009

  • 8 Answers

SOURCE: Evap vent solenoid

If you don't replace, it the service engine light will stay on. You'll get used to the light (or you'll cover it up). Then when something else goes wrong, you wont know.

Posted on Sep 21, 2009

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2007. What are the probable causes of DTC P0446?


DTC P0446: Evaporative Emissions (EVAP) Vent System Performance
Circuit/System Description
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid valve Open and the EVAP canister vent solenoid valve Closed. This allows vacuum to be applied to the EVAP system. Once a calibrated vacuum level has been reached, the control module commands the EVAP canister purge solenoid valve Closed and the EVAP canister vent solenoid valve Open. The control module monitors the fuel tank pressure (FTP) sensor for a decrease in vacuum. If the vacuum does not decrease to near 0 inch H2O in a calibrated time, this DTC sets.
Diagnostic Aids
?€¢
An intermittent condition could be caused by a damaged EVAP vent housing, a temporary blockage at the EVAP canister vent solenoid valve inlet, or a pinched vent hose. A blockage in the vent system will also cause a poor fuel fill problem.


?€¢
An EVAP canister, vent hose, or vent solenoid valve that has restricted flow may cause this DTC to set. Using a purge solenoid command with a scan tool will allow vacuum to be applied to the system instead of pressure. With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 5 inches H2O.


?€¢
An EVAP canister filter that is restricted can cause this DTC to set. Refer to Evaporative Emission Canister Replacement .


?€¢
Disconnecting one component at a time while the EVAP system is under flow will help to pinpoint a restriction in the system


Do you have a scan tool that reads data PID'S ?
Your FTP - fuel tank pressure sensor could be at fault !

    Ignition ON and fuel cap removed, verify that the FTP sensor parameter is between 1.3-1.7 volts. ?‡'
    If not within the specified range, go to the FTP sensor section in Circuit/System Testing.

  1. Install the fuel cap.
  2. With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 12 inches H2O.
?‡'
If the fuel tank vacuum is greater than the specified range, go to the restriction section in Circuit/System Testing.



If

Sep 06, 2015 | Chevrolet Impala Cars & Trucks

2 Answers

045500 error code on a Chev silverado 1500 2009 5.3 lt what does it say


DTC P0455
  • Evaporative Emission (EVAP) System Large Leak Detected

Jul 23, 2014 | 2009 Chevrolet Silverado 1500

1 Answer

2003 Chevy Silverado 1500 5.3L evap emission control system vent solenoid replacement diagram


what yr an makes for a evap solenoid for a 2003 Silverado will enter change if any ?

Jan 15, 2014 | 2003 Chevrolet Silverado 1500

1 Answer

Codes 446 and 452


P0446 has nothing to do with the canistor !
DTC P0446 Evaporative Emission (EVAP) Vent System Performance
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge solenoid valve Open and the EVAP canister vent solenoid valve Closed. This allows vacuum to be applied to the EVAP system. Once a calibrated vacuum level has been reached, the control module commands the EVAP canister purge solenoid valve Closed and the EVAP canister vent solenoid valve Open. The control module monitors the fuel tank pressure (FTP) sensor for a decrease in vacuum. If the vacuum does not decrease to near 0 inches H2O in a calibrated time, this DTC sets.
DTC P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage


How to troubleshoot an EVAP Pressure Sensor problem P0452 GM

EVAP Vent Solenoid Code P0446 The solenoid is stuck open !

Apr 23, 2017 | 2005 Chevrolet Silverado 1500HD

1 Answer

Solution for 1999 chevy cavalier code p0440


There has been a service bulletin isued for that code. I have run into this before, also the wires comming out of the connector. That would bethe first thing to check. Here is what the bulletin states. Emissions - SES Lamp ON/DTC P0440 (EVAP) SetNotesFile In Section: 06 - Engine/Propulsion SystemBulletin No.: 02-06-04-044Date: August, 2002TECHNICALSubject: Service Engine Soon (SES) Light Illuminated, DTC P0440 Set (Replace Fuel Tank Evaporative Emissions Control System (EVAP) Vent Solenoid Harness) Models: 2000-2002 Chevrolet Cavalier2000-2002 Pontiac Sunfire ConditionSome customers may comment that the SES light is/was illuminated.A technician may find DTC P0440 is stored in the PCM.CauseThe EVAP solenoid harness may be misrouted around the rear antilock brake (ABS) wire harness causing a chaff/damage to the EVAP vent solenoid harness, setting DTC P0440.CorrectionFollow the service procedure below to diagnose and correct this condition.1. Install a Tech 2 scan tool and select the appropriate vehicle. Verify that a DTC P0440 is stored in the PCM. 2. Raise the vehicle on a hoist. Refer to Lifting and Jacking the Vehicle in General Information (SI Document ID # XXXXX).

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Locate and inspect the EVAP vent solenoid harness (3) routing. The harness may be routed below the ABS wiring harness (4) at the right rear corner of the fuel tank, causing stress on the EVAP solenoid harness (3).



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4.Disconnect the EVAP vent solenoid harness (3) from the EVAP vent solenoid (2) and connector C313 (1). Discard the EVAP vent solenoid harness (3).


5.Connect the new EVAP vent solenoid harness (3), P/N 22687059, to the EVAP vent solenoid (2), route the harness above the rear ABS harness (4) and connect the EVAP vent solenoid harness (3) to connector C313 (1).


6.Lower the vehicle.


7.Clear the DTC's with the Tech 2 scan tool.



If all of the wires are good you will want to check for any leaks in the evap system.



Hope helps.

Apr 09, 2012 | 1999 Chevrolet Cavalier

1 Answer

I have code p0449 what is the problum


p0449 is EVAP (Evaporative Emission System) purge/vent solenoid circuit condition

possible causes are-- purge or vent valves are defective, check connector and wiring, fuel saturated vapor canister, Failed EVAP vent solenoid. plus check all hoses good. check for a bad fuel cap seal. remove cap and replace it, erase code and see if it comes back. go to this site maybe it will help you. www.gm-trucks.com/forums/index.php?showtopic=40659

Jan 21, 2012 | 2003 Chevrolet Silverado 1500

1 Answer

Getting computer code p1665 fuel level output circuit. Fuel gauge appears to be shorting out because it is always reading full


CODE P1665 - EVAP VENT SOLENOID CONTROL CIRCUIT MALFUNCTION CONDITIONS.POSSIBLE CAUSES / VENT SOLENOID CONTROL CIRCUIT OPEN SHORTED TO GROUND OR TO SYSTEM POWER / VENT SOLENOID POWER CIRCUIT IS OPEN CHECK THE ENG CNTL FUSE / EVAP VENT SOLENOID IS DAMAGED OR HAS FAILED / PCM HAS FAILED.

Nov 04, 2010 | 1999 Oldsmobile Alero

1 Answer

2007 SILVERADO V6 EVAP PURGE SOLENOID


The evap purge solenoid is located on the intake manifold. The evap vent valve is located on the side of the fuel tank. If you have a P0449 or P0452 (I think) DTC, it will be the one on the tank that you need to replace.

Sep 01, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Evap vent solenoid code p0446


yes the evap and fuel injection flush service are 2 diff things, replace the evap solenoid and clear the code, also make sure the vent on the carbon canister is clear.

Apr 21, 2009 | 2000 Chevrolet Silverado 1500

2 Answers

HAVE A TROUBLESHOOTING MESSAGE PO446 ON A 2003 CHEVROLET SILVERADO 1500. CHECKED GAS CAP AND TIGHTNED NO CHANGE. AM LOOKING FOR LOCATION OF FOLLOWING PARTS PURGE OR VENT SOLENOID VAPOR CANISTER EVAP VENT...


DTC P0446 Evaporative Emission (EVAP) Vent System Performance

The vehicle control module (VCM) monitors the performance of the evaporative emission (EVAP) system by applying a predetermined level of vacuum to the EVAP system and monitors the vacuum decay rate. The VCM sets this diagnostic trouble code (DTC) if the vacuum decay rate is more than a predetermined value. The VCM monitors the amount of vacuum and the amount of pressure in the EVAP system by monitoring the fuel tank pressure sensor. For this DTC, the VCM turns ON both the EVAP purge valve and the EVAP vent valve when the Conditions for Running the DTC are met. This applies an engine vacuum to a closed EVAP system. The VCM turns OFF both the EVAP purge valve and the EVAP vent valve when the system reaches a correct amount of vacuum. The EVAP system should quickly RELEASE the vacuum in the EVAP system with the EVAP purge valve OFF and the EVAP vent valve OFF (open). This test indicates a blocked or restricted EVAP vent path if the EVAP system fails to release the vacuum quickly enough.

3208f98.gif


Dec 02, 2008 | 2000 Chevrolet Silverado 1500

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