Try to put gas in tank but it will not take gas fast

Tiny
ROBERT VANALSTINE
  • MEMBER
  • 2005 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 191,000 MILES
Try to put gas in tank and it keeps shutting off ten to thirty cents at a time. Engine light is on.
Thursday, October 18th, 2018 AT 10:43 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi and thanks for using 2CarPros.com.

For fuel to enter the tank, air has to escape. There is a one way valve that connects the fuel tank to the EVAP Canister. It is purpose is to allow gas vapors to enter the canister instead of the air when refueling. If the vent valve is not working, it will not allow vapors to escape fast enough causing the pump to shut off. (Hence 30 cents at a time)

Since the check engine light is on, my first suspect is the vent valve solenoid. I have a feeling it is stuck in the closed position.

Take a look at the first two pictures I attached. They indicate the component's location. In picture 1, find component number 10. In picture 2, find component 2.

Now, to confirm this is the problem, you need to scan the computer to determine if there is a trouble code related to the EVAP system or specifically the canister vent valve. Here is a quick video that shows how to use a scanner. If you do not have one, most parts stored will do it for free.

https://youtu.be/YV3TRZwer8k

If you take it to a parts store, ask them to write down the codes they find, and let me know them so I can help you identify what exactly is happening.

If on your own you determine this is the issue, here are the directions for replacing it. All remaining pictures correlate with these directions.

____________________________________

EVAP CANISTER VENT SOLENOID VALVE REPLACEMENT (PICKUP)
EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE REPLACEMENT (PICKUP)

REMOVAL PROCEDURE

IMPORTANT: Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Remove the harness clip from the canister vent solenoid (CVS) line.
3. Disconnect the CVS electrical connector.
4. If the vehicle is equipped with a 6 ft box, disconnect the EVAP CVS line from the canister.
5. Remove the CVS clip from the frame crossmember.
6. Push in the retainer and remove the CVS from the fuel tank clip.
7. If the vehicle is equipped with a 8 ft box, disconnect the EVAP CVS line from the canister.
8. Remove the CVS clip from the frame crossmember.
9. Push in the retainer and remove the CVS from the fuel tank clip.

INSTALLATION PROCEDURE
1. If the vehicle is equipped with a 8 ft box, install the CVS to the fuel tank until the clip engages.

IMPORTANT: On vehicles equipped with a 8 ft box, the CVS line is routed below the frame crossmember.

2. Install the CVS clip to the frame crossmember.
3. Connect the EVAP CVS line to the canister.
4. If the vehicle is equipped with a 6 ft box, install the CVS to the fuel tank until the clip engages.

IMPORTANT: On vehicles equipped with a 6 ft box, the CVS line is routed above the frame crossmember.

5. Install the CVS clip to the frame crossmember.
6. Connect the EVAP CVS line to the canister.
7. Connect the CVS electrical connector.
8. Install the harness clip to the canister vent solenoid (CVS) line.
9. Lower the vehicle.

_________________________________________________

I hope this is helpful. Feel free to ask any questions you may have.

Take care,
Joe
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Saturday, October 20th, 2018 AT 4:10 PM

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