Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

2014 Silverado gas leak and smell coming from back side of motor


Recommended Posts

I have 2014 Silverado and went to the gas station one morning and out of nowhere started smelling gas inside of the truck. Long story short, went to look underneath truck and had a 3x3 ft size puddle of fuel underneath truck on ground. Looked to see where it was coming from and looks like it’s coming from back side of motor. Can anyone help or recommend any action to take from this?

Link to comment
Share on other sites

The high-pressure fuel pump is driven by the cam shaft and is located at the back of the engine.  That would be my first suspect.  TheSundaeDrive has a video on YouTube of his AFM delete process where he changes his HPF pump.  Check that out for more details about the job.

Edited by papageoff
  • Thanks 2
Link to comment
Share on other sites

Most likely the high pressure fuel pump or a line going to/coming from it.

 

You will have to remove the intake manifold to access so order up those gaskets.  You will also need to replace the fuel feed pipe that comes directly off of the pump to the "S" pipe that feeds the rails as its one time use.  

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Similar Content

    • By Scotty Harder
      So around this time of year last year I changed my brakes and my rotors and was going to replace my front bearings as well. My 08 is a Michigan truck so it’s got a plethora of rust accumulated. One of caliper bolts had seized so I completed what I could with the brakes and headed home to figure the best attack for a seized rusted bolt with thread lock. Anyways that bolt was a ******, so I went to my brother cause he had an air compressor and thought we’d try that. Needless to say the bolt one, so my brother put the wheel back together but before he put the caliper back in place over the rotor he decided to decompress the spring?. Why? I have zero idea thought it was pointless for him to do that Considering I had to do it to change the springs. So I start to head back home just worried about getting this bolt out so I can change my bearing. So as I start to leave I don’t notice anything out of place until I get down the road and my brake pedal goes to the floor. It made no sense, I couldn’t figure out what happened in the 30 minutes I was there; that would take my brakes from having good pressure to having none.  Then not long after that my fuel pump goes. Old Murphy’s law coming in clutch for me! So I get the fuel pump swapped get the caliper freed so I could replace my bearing. Then go to bleed my brakes and I can’t get any of my brake pedal back. I have abs so I I went out and bought a scan tool cause I heard bleeding brakes with an abs system without the scan tool is difficult and is more than likely the reason my brakes still go to the floor. So I do everything the device tells me to. There’s no change, except now I can’t shift it out of park to even attempt to check if there’s at least some pressure. I’ve been battling these brakes so at least the last half of 2021 my family is telling me to just sell it for whatever. Honestly I don’t want to sell it I rather enjoy having it and am not ready to let it go. Any help or advice would be so appreciated!



    • By Korbyn Talley
      I have a 2017 Silverado 5.3L. Used to stay around 40 pounds of oil. Now when idling, is goes down to 20-25 ish pounds. It’s not throwing any codes up but does have a bit of a knock if I floor it without letting the pressure build back up first. Cold start it’s just below 40 pounds but at operating temps (210) it drops like crazy. It’s not oil quality or level, I just changed it last week and it was good for half a day and went back down. 
    • By Avery Dameron
      Well I had to get mufflers to correct my “fix it ticket.”  I ended up getting a x pipe and dynomax bullets on my catback true duals for the new readers.  Very disappointed in the sound. Going from straights to mufflers is depressing.  No matter what mufflers it is and these are the loudest ones I could get.  Not sure how I feel about the x pipe, I got it primarily to make the strange vaccum chop go away and it did that perfectly. However it might be contributing slightly to making it quieter, I don’t know.  So if you’re out there and you want to make your exhaust a little louder- I can only recommend one thing (which i will be doing on my 18th birthday)- long tube headers, catless straight pipes with x pipe to 8” slash cut shorty tips.  
    • By Chris Ingerman
      Anyone happen to know how many gallons of gas you have when the gas light comes on? I drive a 99 silverado 1500 5.3L v8.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    235.3k
    Total Topics
    1.4m
    Total Posts
  • Member Statistics

    262,522
    Total Members
    8,960
    Most Online
    207salvage
    Newest Member
    207salvage
    Joined


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.