Jump to content


Photo
- - - - -

Trouble pumping gas....


  • Please log in to reply
11 replies to this topic

#1 BoostedBlues

BoostedBlues

    SS Newbie

  • Member
  • 5 posts
  • Name:Shannon
  • Gender:Male
  • Location:Pontotoc Mississippi
  • Owns:SS
  • Color:Arrival Blue
  • Year:2004
  • Drivetrain:AWD

Posted 12 January 2018 - 01:34 AM

Anyone else have trouble pumping gas? If I don't go super slow it just clicks off over and over takes forever to fill up! 


  • 0

#2 A_FuriouSS

A_FuriouSS

    Just your everyday neighborhood spaceman.

  • Supporting Member
  • PipPip
  • 361 posts
  • Name:Anthony
  • Gender:Male
  • Location:Philadelphia
  • Owns:SS
  • Color:Black
  • Year:2006
  • Drivetrain:2WD

Posted 12 January 2018 - 08:15 AM

This has happened to me also. It's widely inconsistent for me so, I assume it has something to do with the sensitivity of the actual fuel pump.
  • 0
LdOeqe.jpg

#3 chevyss05tx

chevyss05tx

    *Elite SS Member*

  • Member
  • PipPipPipPip
  • 1,314 posts
  • Gender:Male
  • Location:HOUSTON TEXAS!!!
  • Owns:SS
  • Color:Victory Red
  • Year:2005
  • Drivetrain:2WD

Posted 12 January 2018 - 11:17 AM

Same for me!


  • 0
sss2pic

05 Silverado SS 2WD


#4 BoostedBlues

BoostedBlues

    SS Newbie

  • Member
  • 5 posts
  • Name:Shannon
  • Gender:Male
  • Location:Pontotoc Mississippi
  • Owns:SS
  • Color:Arrival Blue
  • Year:2004
  • Drivetrain:AWD

Posted 12 January 2018 - 09:24 PM

Thanks Guys. Its just odd how my Z71 will pump fine at these stations. But the TBSS and SSS both give me fits ha!


Edited by BoostedBlues, 12 January 2018 - 09:25 PM.

  • 0

#5 psualumni

psualumni

    Senior SS Member

  • Member
  • PipPip
  • 172 posts
  • Name:Travis
  • Gender:Male
  • Location:Bloomsburg, PA
  • Owns:SS
  • Color:Black
  • Year:2004
  • Drivetrain:AWD

Posted 12 January 2018 - 10:16 PM

If the EVAP canister filter attached to the side of the gas tank is clogged it will not allow air in/out of the tank, thus not allowing fuel in. This problem usually comes in conjunction with a TIGHTEN FUEL CAP message being displayed via the information center readout because of an EVAP system leak.

OR if it only happens once in a blue moon the fuel filter in the station gas pump is blocked and there is nothing wrong with your truck.6bff667b72a931ba8c36f6eb0b0a83af.jpg

Sent from my XT1650 using Tapatalk
  • 0

#6 BoostedBlues

BoostedBlues

    SS Newbie

  • Member
  • 5 posts
  • Name:Shannon
  • Gender:Male
  • Location:Pontotoc Mississippi
  • Owns:SS
  • Color:Arrival Blue
  • Year:2004
  • Drivetrain:AWD

Posted 13 January 2018 - 01:34 AM

I looked up that EVAP canister for my truck but shows that part don't apply? Think it's 02 and before that have those. Not real sure... does the 04 model have them?


Edited by BoostedBlues, 13 January 2018 - 01:38 AM.

  • 0

#7 someotherguy

someotherguy

    Veteran SS Member

  • Member
  • PipPipPip
  • 831 posts
  • Name:Richard
  • Gender:Male
  • Location:Houston, TX
  • Owns:SS
  • Color:Black
  • Year:2006
  • Drivetrain:2WD

Posted 13 January 2018 - 06:01 AM

EVAP canisters have been on US market vehicles for decades, your 04 has one.  My 06 has one.  And it's bad..

 

Richard


  • 0

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


#8 Sanders

Sanders

    Veteran SS Member

  • Member
  • PipPipPip
  • 536 posts
  • Name:jesse
  • Gender:Male
  • Location:Northern Kentucky
  • Owns:SS
  • Color:Arrival Blue
  • Year:2003
  • Drivetrain:AWD

Posted 14 January 2018 - 01:34 PM

Get ready to drop the tank or pull the bed. Unless it's been replaced before she has been relocated. But if your luck is like mine that won't be the case.

Sent from my SM-G930V using Tapatalk
  • 0

#9 eberhama

eberhama

    Senior SS Member

  • Member
  • PipPip
  • 309 posts
  • Name:Matt
  • Gender:Male
  • Location:Moorhead, MN
  • Owns:SS
  • Color:Silver Birch Metallic
  • Year:2005
  • Drivetrain:4WD

Posted 15 January 2018 - 12:08 PM

Its the solenoid that goes bad. Its the round thing near #4 in psualumni's picture. It sucks in fine dust, and eventually sticks the solenoid shut, making for the slow gas fill. You can take it off and clean it, or replace it, but that is a short term fix. GM's fix was to replace it, and run the intake up under the hood with a long piece of heater hose. Looks a little hoaky, but it works. You shouldn't need to remove the box or gas tank to do any of it.


  • 0

#10 someotherguy

someotherguy

    Veteran SS Member

  • Member
  • PipPipPip
  • 831 posts
  • Name:Richard
  • Gender:Male
  • Location:Houston, TX
  • Owns:SS
  • Color:Black
  • Year:2006
  • Drivetrain:2WD

Posted 16 January 2018 - 10:38 AM

The solenoid goes bad, but the canister does, too.  Especially if you're in the habit of topping off the tank after the pump clicks off automatically.

 

I've replaced my solenoid with the new design that has the remote-mount filter, hoping that's all it would need, nope.  Also have new OEM gas cap.  Still have the "tighten gas cap" error message, and still have trouble filling up the truck.  That symptom is fairly recent; if it had done that consistently I would have just gone ahead and done the canister, which is the next job.

 

Richard


  • 0

06 Silverado ISS / 06 Silverado SS / 06 300C SRT8


#11 TerryRH

TerryRH

    SS Newbie

  • Member
  • 19 posts
  • Name:Terry
  • Gender:Male
  • Location:Imperial, MO
  • Owns:SS
  • Color:Victory Red
  • Year:2003
  • Drivetrain:AWD

Posted 16 January 2018 - 03:46 PM

I replaced the purge solenoid over a year ago and haven't had a problem since. I've got "only" about 180k on it.

2003 SSS

Sent from my Pixel using Tapatalk
  • 0

#12 psualumni

psualumni

    Senior SS Member

  • Member
  • PipPip
  • 172 posts
  • Name:Travis
  • Gender:Male
  • Location:Bloomsburg, PA
  • Owns:SS
  • Color:Black
  • Year:2004
  • Drivetrain:AWD

Posted 17 January 2018 - 01:12 AM

When I supercharged my truck the supercharger came with a new EVAP purge solenoid (the sensor that sits on the intake manifold and purges the gas vapor from the charcoal canister into the intake). I would assume this is because the new one was supposed to have a stronger check valve inside. (I know from experience, as I have smoked this part on my Cobalt SS running high turbo boost. The increased pressure in the intake at boost popped the check valve inside on the stock unit.) Since I replaced this and my truck is a 2004 (even with only 30k) I decided to replace all the easily serviceable EVAP components. I bought a new gas cap and the purge solenoid that sits on the side of the tank (item 4). Replacing these items can be done without dropping the tank or removing the bed. I was surprised how much faster my tank fills at the pump. Even though I didn't notice a problem before, when I tightened up the EVAP system with new components it allowed air out of the tank faster when I was filling up with fuel, and most likely eliminated small tolerable vapor leaks from the tank.

 

 

 

The irony in all this is that Whipple does not have a provision on their intake and/or supercharger for the PCV system. The fuel system discharge solenoid that used to vent the fuel vapor from the charcoal canister to the intake manifold now vents to the PCV valve on the driver’s side valve cover and vise versa. The line from the PCV valve from factory that also vented to the intake is now connected to the fuel system discharge solenoid. Therefore you have flow from the PCV system to the fuel system discharge solenoid, and from the fuel system discharge solenoid to the PCV valve. This creates a situation where two positive directions of flow are pushing against each other. i.e. The PCV is flowing out to the fuel system discharge solenoid, and the fuel system discharge solenoid is flowing out to the PCV valve. Obviously this creates a situation where the flow goes nowhere deadheading in the hose until it leaks past the PCV valve back into the valve cover.

 

 

 

In this situation the pressure from PCV system finds another route to escape to atmosphere through the engine (better to atmosphere than into my intake anyway I feel. Just don't tell the EPA.) When the fuel vapor from the charcoal canister vents through the fuel system discharge solenoid in to valve cover it mixes with engine oil. This thins it out just a tad im sure, or simply evaporates and exits with the PCV gases to atmosphere. (Again, better than fouling my intake manifold with gunk I think, just don't tell the EPA.) It's a little comical as my EVAP system tells me when the fuel system discharge solenoid vents into the valve cover, because the PCM detects this as an EVAP leak. I'll be driving along and eventually the pressure in the charcoal canister needs to vent via the fuel system discharge solenoid into the valve cover. The PCM detects this pressure deviation in the EVAP system and displays the TIGHTEN FUEL CAP message in the information center. The fuel system discharge solenoid ends the purge, the system reseals, and the TIGHTEN FUEL CAP message goes away. If my wife is with me she hears the chime from the information center and says “What is your truck doing now?” I tell her it’s so powerful it’s reminding me to drive safely. She rolls her eyes. Never complains when the squeezebox pushes her back into the seat through. (Just don’t tell the EPA.) :laugh:


Edited by psualumni, 17 January 2018 - 01:14 AM.

  • 0




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users