Question about 2002 GMC Envoy

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Need to replace evaporator emmission valve by gas tank, can tell how to remove, what holds it in place?

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Hello: If this the vent valve there will be a metal bracket that is holding the valve in place. on the side that the valve is close to you will see a metal clip in the middle, release it with a straight slot screw driver. Before installing the new valve push the clip back so it will hold the new valve. Hope this helps you.

Posted on Nov 02, 2010

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I am unable to locate the Vapor Canister Purge Valve on my 2006 Isuzu Ascender LS 6 Cyl. I have a hard code with the check engine light on and I am unable to reset the check engine light. I purchased the...


Hello had the same problem in my 2006 Isuzu I-280 I needed to
replace at this moment the Evaporative Valve Soleniod which is instaled next to the Vapor Canister. It is mounted on the frame behind the gas tank you will have to move the spare tire out of the way one bolt holds it in place this is where the canister is and the valve is mounted on the canister this is where it is mounted on my 2006 I-280. If you need to replace the solenoid and you can't find the original Isuzu part, you can ask for the 2006 Chevy Impala V-6 3.5 Purge Valve Solenoid. It is the same piece. The old Evaporative Vent Valve Solenoid has a number part PA-GF30, and it is the same part number I found in the new Chevy Impala Evaporative Vent Valve Solenoid.

Aug 08, 2013 | Cars & Trucks

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I have a 2006 Isuzu Ascender with a 6 Cyl. 4.2L Engine and I need to locate the Vapor Canister Purge Valve. Any ideas where it is located. I have looked but am unable to locate it. Is it under a plastic...


Hello have a 2006 Isuzu I-280 and I needed to replace, at this moment, the Evaporative Valve Soleniod which is instaled next to the Vapor Canister. In my case, It is mounted on the frame behind the gas tank you will have to move the spare tire out of the way one bolt holds it in place, this is where the canister is and the valve is mounted on the canister this is where it is mounted on my 2006 I-280. If you need to replace the solenoid and you can't find the original Isuzu part, you can ask for the 2006 Chevy Impala V-6 3.5 Purge Valve Solenoid. It is the same piece. The old Evaporative Vent Valve Solenoid has a number part PA-GF30, and it is the same part number I found in the new Chevy Impala Evaporative Vent Valve Solenoid. Good luck.

Aug 08, 2013 | Cars & Trucks

1 Answer

Fail Emmission test


I think you mean the vapor canister for the gas tank.
The canister should be near the radiator in the engine compartment, or near the gas tank under the bed of the truck.

May 11, 2013 | 1995 Nissan Pickup

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Slow filling of fuel tank on 2002 Hyundai Elantra


The emmissions evaporator cannister needs to be replaced. The charcole elements inside that cannister have finally expired from use through the years

Oct 10, 2012 | Cars & Trucks

1 Answer

Need to replace pontiac aztek evaporation emission vent valve


This is located on the top/side of the gas tank on the drivers side of the tank. instructions for removal- jack the front left side of the car up, unbolt top bolt that holds the heat shield and evap canister up place another jack under gas tank before the strap. (i use the jack that comes with the car i find it easier) unbolt 1st strap lower the tank down there should be enough clearance to lower half of the tank down without droping the entire thing

Sep 25, 2012 | 2001 Pontiac Aztek

2 Answers

2001 chevrolet sububban po446,452,and 453 how do i fix my check engine light is on and i cant pass in spection


DTC P0446 - Evaporative Emmission Control System Vent Control Circuit
Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test. A code P0446 could mean one or more of the following has happened:
  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
Possible Solutions
  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM

DTC P0452 - Evaporative emission control system, pressure sensor low imput
DTC P0453 - Evaporative emission control system, pressure sensor high imput

The PCM monitors the EVAP control system FTP sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter. If both codes are present, it sounds like your fuel tank pressure sensor has failed.

The sensor is on top of the tank and you will have to remove the tank. But your symptoms are pointing to more than just the sensor. You may have wiring problems.


Hope this helps (remember to rate and leave a comment about this free answer).

Sep 30, 2011 | 1998 Cadillac Seville

3 Answers

I have 2000 ford contour my engine light came on i took my car and got a reading which said failed canister vent solenoid. what does that mean. Is it serious


The solenoid is for an emissions device called an evaporative loss canister. It would probably not affect how the engine performs but it would have to be replaced to pass a smog test.

Apr 29, 2011 | 2000 Ford Contour

2 Answers

I replaced my gas cap on my car but it keeps telling me to check the gas cap. How do I make that stop?


There could be a leak in the filler neck, tank, or connection to the gas tank that causes a reduction in normal pressure usually associated with a missing or loose gas cap.

Oct 18, 2010 | 2005 Cadillac CTS

1 Answer

How to Change a Fuel Pump on an 2005 Envoy XLT? Must drop the tank? Does it have access under the rear seat?


Usually there is no access under the rear seat for safety reasons.prev.gif next.gif Fuel Tank Removal & Installation 2002-2004 To Remove:
  1. Relieve the pressure in the fuel system.
  2. Lift the vehicle.
  3. Remove the frame brace from the frame.
  4. Remove the fuel tank shield from the fuel tank.
  5. Drain the fuel from the tank into an approved container.
  6. Loosen the fuel hose clamp and disconnect the hose from the fuel tank.
  7. Disconnect the evaporative emission (EVAP) vent valve and fuel tank pressure sensor connectors. Evaporative emission cansister pipes removal and installation gm-05-00-1546.gif

  8. Disconnect the evaporative emission (EVAP) vapor and vent valve pipes from the evaporative emission (EVAP) canister.
  9. Disconnect the fuel return and feed pipes from the fuel tank.
  10. To avoid system contamination, cap the evaporative emission (EVAP) and fuel pipes.
  11. Use a jack to support the fuel tank. Fuel tank removal and installation gm-05-00-1547.gif

  12. Detach the fuel tank straps from the frame.
  13. Lower the fuel tank.
  14. Disconnect the fuel sender connector.
  15. Remove the fuel tank from the vehicle.
To Install:
  1. Place the fuel tank under the vehicle.
  2. Connect the fuel sender connector.
  3. Attach the fuel tank straps to the frame. Torque the bolts to 24 ft-lb (32 Nm).
  4. Remove the caps from the evaporative emission (EVAP) and fuel pipes.
  5. Connect the evaporative emission (EVAP) vapor and vent valve pipes to the evaporative emission (EVAP) canister.
  6. Connect the evaporative emission (EVAP) vent valve and fuel tank pressure sensor connectors.
  7. Connect the fuel hose to the fuel tank. Torque the clamp to 22 in-lb (2.5 Nm).
  8. Connect the fuel return and feed pipes to the fuel tank.
  9. Lower the vehicle.
  10. Refill the fuel tank.
  11. Turn on the ignition for 2 seconds, with the engine off, and then turn off the ignition. After 10 seconds, turn the ignition back on with the engine off.
  12. Lift the vehicle.
  13. Check for leaks in the fuel lines.
  14. Install the fuel tank shield onto the fuel tank.
  15. Install the frame brace onto the frame.
  16. Lower the vehicle.
2005-2007 To Remove:
  1. Relieve the pressure in the fuel system.
  2. Lift the vehicle.
  3. Remove the frame brace from the frame.
  4. Remove the fuel tank shield from the fuel tank.
  5. Drain the fuel from the tank into an approved container. Evaporative emission cansister pipes removal and installation gm-05-00-1544.gif

  6. Disconnect the evaporative emission (EVAP) canister fresh air, solenoid, and purge pipes from the evaporative emission (EVAP) canister.
  7. Disconnect the fuel filler pipe recirculation hose from the fuel tank.
  8. Loosen the fuel fill pipe clamp and disconnect the pipe from the fuel tank.
  9. Disconnect the fuel feed and evaporative emission (EVAP) pipes from the fuel tank.
  10. To avoid system contamination, cap the pipes.
  11. Use a jack to support the fuel tank. Fuel tank removal and installation gm-05-00-1545.gif

  12. Detach the fuel tank straps from the frame.
  13. Lower the fuel tank.
  14. Disconnect the evaporative emission (EVAP) vent valve, fuel tank pressure sensor, and fuel sender connectors.
  15. Remove the fuel tank from the vehicle.
To Install:
  1. Place the fuel tank under the vehicle.
  2. Connect the evaporative emission (EVAP) vent valve, fuel tank pressure sensor, and fuel sender connectors.
  3. Lift the fuel tank.
  4. Attach the fuel tank straps to the frame. Torque the screws to 24 ft-lb (32 Nm).
  5. Remove the caps from the pipes.
  6. Connect the fuel feed and evaporative emission (EVAP) pipes to the fuel tank.
  7. Connect the fuel fill pipe to the fuel tank. Torque the clamp to 22 in-lb (2.5 Nm).
  8. Connect the fuel filler pipe recirculation hose to the fuel tank.
  9. Connect the evaporative emission (EVAP) canister fresh air, solenoid, and purge pipes to the evaporative emission (EVAP) canister.
  10. Lower the vehicle.
  11. Refill the fuel tank.
  12. Turn on the ignition for 2 seconds, with the engine off, and then turn off the ignition. After 10 seconds, turn the ignition back on with the engine off.
  13. Lift the vehicle.
  14. Check for leaks in the fuel lines.
  15. Install the fuel tank shield onto the fuel tank.
  16. Install the frame brace onto the frame.
  17. Lower the vehicle.

Jul 11, 2010 | 2005 GMC Envoy Xl

1 Answer

Evaporative emmission control system large leak detected


that can be something as simple as a bad or loose gas cap ... the cap must seal in order to develop a slight vacuum in the tank thats is used by the emmission control system. less likely but possible is damage to the several hoses that go from the tank to the evaporation control system in the engine compartment..
check your gas cap for damaged or missing rubber seal .. or just replace it ... clean the filler tube if needed so that the gas cap will seal properly .. check the flex hose (if any) from the filler nozzle to the tank ...

Dec 23, 2009 | 1999 Audi A4

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