The vent valve is located above the tank and below the bed near the junction of the back of the cab and the front of the bed. It has one 2 pin electrical connector and on tube going into it. The valve is normally open. The ECM only closes the valve for testing of the EVAP system. If the valve fails to close when commanded or the valve has debris the SES will come "ON".
YOU WILL FIND IT MOUNTED ON A BRACKET UNDER THE TRUCK BY THE FUEL TANK
The evap control valve is on the cannister
i think the code p1400 means exhaust gas recirculation(EGR) system/ evaporative emission(EVAP)system- valve mulfunction i think the code p1400 means exhaust gas recirculation(EGR) system/ evaporative emission(EVAP)system- valve mulfunction i think the code p1400 means exhaust gas recirculation(EGR) system/ evaporative emission(EVAP)system- valve mulfunction
The evaporative emissions (EVAP) canister purge solenoid on a 2003 Chevrolet Silverado 1500 with a 4.8 liter engine is located behind the throttle body, near the front of the engine. I have a picture of it that I could send to your email if you want.
Evaporative Emission Control System control valve malfunction. You need a new evap control surge solenoid valve.
It is mounted up under the truck right next to the gas tank, in front of it.
P0443 - Evaporative Emission ( EVAP ) system fault - Chilton repair manual P0443 - EVAP Vapor Management Valve ( VMV ) circuit fault - Haynes repair manual P0443 - EVAP Control System Cannister Purge Valve Circuit Malfunction - DTC codes
This usually indicates a faulty Evaporative Emission (EVAP) Vacuum Cut Valve/Bypass Valve.1. Verify battery voltage to the EVAP vacuum cut valve bypass valve on the Black/White wire with the key ON.2. Verify the Green/White ground wire for the EVAP vacuum cut valve bypass valve is good all the way to the ECM. The Green/White wire goes to terminal 117 on the ECM.3. Verify the EVAP vacuum cut valve bypass valve is closed (can not blow through it by mouth) when the EVAP vacuum cut valve bypass valve is de-energized.4. Verify the EVAP vacuum cut valve bypass valve opens (can blow through it by mouth) with the valve powered up and grounded.5. Check the EVAP vacuum cut valve to verify it allows flow only one way.
The Evaporative Emission Control System monitors the fuel vapor flow between the engine intake manifold and the EVAP canister. The system failure occurs when a leak or blockage between the intake manifold, the EVAP canister purge valve and the EVAP canister is detected by the PCM. Code P1443 Possible Causes: - Pinched, blocked or plugged fuel vapor tubes/hoses (except between fuel tank and EVAP canister) - Damaged EVAP canister - Disconnected, cracked or cut fuel vapor tubes/hoses (except between fuel tank and EVAP canister) - Damaged EVAP canister purge valve
most likely in the evap canister.
This code indicates an incorrect Evaporative System Purge Control Valve flow. Can be caused by clogged, disconnected, or broken vacuum line between the EVAP Canister Purge Valve and intake manifold or bad Purge Valve itself.
evap vacuum cut valve bypass valve