Jump to content

2014 Sierra P0172 and P0175

aspat19

By aspat19
in Troubleshooting & Recalls

 Share

Recommended Posts

Ricks Munn Enthusiast

Ricks Munn

Posted
Posted

Hey guys, just wanted to say that I have the same issue with my 2014 silverado as well. I have not yet taken it to a dealership, but I managed to find this video on the internet that I thought was pretty interesting. Unfortunately I do not have a fancy enough scan tool to be able to view all of the PIDs that this guy monitors, but I think this is the problem my truck is having. Basically the truck thinks that it is running fuel that has a really high percentage of alcohol in it (like 35% or so) even though it is standard fuel. The fuel composition sensor needs to be reset and in some cases there is an ECM update that is supposed to correct the problem. Hope this helps you guys. The video is a little on the long side, but very informative.

 

Here's the link https://www.youtube.com/watch?v=hb4ct0mIV8g

  • Replies 41
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

Hillwood Enthusiast

Hillwood

Posted
Posted
Basically same conditions for mine too, 127k miles and got those codes mid March. Then 0430 mid April. I finally narrowed it down to exhaust manifold gasket leak while I was checking the plugs; specifically #8. Ordered gaskets to replace this week and a couple extra bolts.
 
I think I lost one which is why the leak developed. Dealer said this was a common thing. I said it shouldn’t be if you built trucks to last with good parts and if it’s that common it should be a defect covered under a recall. There’s no reason for bolt heads to be blowing off the exhaust manifold. 
It is common.. Think about it.. The temperature swings from hot to cold every time you drive.. The expansion and contraction over time causes the bolts to get weak.. This is normal.

Sent from my SM-G965U using Tapatalk

Firewurx Enthusiast

Firewurx

Posted
Posted

Ya I get it. Shouldn’t happen tho and won’t ever again. I replaced them and traded it after the CEL kept coming back and Chevy straight up told me they didn’t know what was wrong. 3 months with my Tundra now and I don’t know why I ever left Toyota. bye forever Chevy. 

Hillwood Enthusiast

Hillwood

Posted
Posted
Ya I get it. Shouldn’t happen tho and won’t ever again. I replaced them and traded it after the CEL kept coming back and Chevy straight up told me they didn’t know what was wrong. 3 months with my Tundra now and I don’t know why I ever left Toyota. bye forever Chevy. 
I'm happy for you!

Sent from my SM-G965U using Tapatalk

SS502 Senior Enthusiast

SS502

Posted
Posted
10 hours ago, Firewurx said:

Ya I get it. Shouldn’t happen tho and won’t ever again. I replaced them and traded it after the CEL kept coming back and Chevy straight up told me they didn’t know what was wrong. 3 months with my Tundra now and I don’t know why I ever left Toyota. bye forever Chevy. 

See ya goodbye...enjoy that cam shaft tower seal leaking...at least you can say that you used to drive a Chevy ?

  • 5 months later...
Diverjer Enthusiast

Diverjer

Posted
Posted

Yes I got the P0172 P0175 and haven't had the truck 24 hours. It has 49,500 miles on the 5.3.

Colossus Senior Enthusiast

Colossus

Posted
Posted
On 12/23/2018 at 12:28 AM, SS502 said:

See ya goodbye...enjoy that cam shaft tower seal leaking...at least you can say that you used to drive a Chevy ?

Oh let him live in his "Oh what a Feeling" moment. 

  • 2 weeks later...
Burban15 New Member

Burban15

Posted
Posted
On 5/29/2019 at 2:57 PM, Diverjer said:

Yes I got the P0172 P0175 and haven't had the truck 24 hours. It has 49,500 miles on the 5.3.

You just bought it?

Diverjer Enthusiast

Diverjer

Posted
Posted

Yes, dealership checked it out and kept it several days while a part was ordered and put on. When I picked it up, nobody that was there knew what part was put on, manager was gone. Next time I am there I will ask, but so far it has not thrown anymore codes.

mchnhd4 Enthusiast

mchnhd4

Posted
Posted
On 9/4/2018 at 8:13 AM, BAMA 4x4 said:

Anybody else dealing with these issues?

Exact same issues here just started for me. Same codes and everything. I started a thread a couple days ago on this. Dealer diagnosed is potentially as a PIP5590A and points to the high pressure fuel pump. That is a $1250 fix though and they didn't feel 100% confident about it. Mine seems to happen when the truck is idling in hot weather. Hard shifts are because the truck is going into fault mode. Everyone I talk to is saying its more likely the injectors. After seeing that other poster say he got the injectors cleaned and it seems to be fine I am on the verge of doing that also. Truck has 65k on it and its a 2014 5.3

 

  • 2 weeks later...
CoachGardnerFHS Enthusiast

CoachGardnerFHS

Posted
Posted

2014 5.3 Silverado. Same thing, except most on here say it happens around 125K mine did it about 6 months ago at 63K, cleared itself, then came up again yesterday at 69K. I commented to my wife that both instances were days with a lot of idling, then came here to see much of the same. With mine being under 100K, is this something that should be under warranty?

  • 1 month later...
zzach19 Enthusiast

zzach19

Posted
Posted

I have a 2014 Silverado 5.3 with 65k miles. I started getting the P0172 and P0175 codes about two months ago. I cleared them pretty quickly each time the light popped on and determined that they would reoccur after I would remote start it and let it run for 5 minutes or more. I really do believe this issue is triggered, at least for me, by idling at least 5 minutes. When I intentionally avoided idling the codes did not reappear. After searching this and other forums I decided to focus on the injectors. After a bit of research I settled on trying a fuel injector cleaner, Liqui Moly Jectron to be specific. I usually don't have high expectations for the "off the shelf magic bullet" but this stuff has me really optimistic. I put it in two weeks ago with about 2/3 of a tank and drove about 200 miles over the next day. Since then I have let it idle over 5 minutes two or three times with the key on and exactly 10 minutes three other times by remote starting it and letting shut itself off. At this point the light has not come back on yet. I am sharing this so that others can give it a try and see if they have similar results. The best part being the cleaner is less than $10 at my local Autozone. If this continues to keep the code cleared I am going to add it to my every second oil change checklist. If any of y'all give it try please post here and let me know if it helps at all. I'll report back if it keeps working for me.

mchnhd4 Enthusiast

mchnhd4

Posted
Posted
On 8/11/2019 at 3:34 PM, zzach19 said:

I have a 2014 Silverado 5.3 with 65k miles. I started getting the P0172 and P0175 codes about two months ago. I cleared them pretty quickly each time the light popped on and determined that they would reoccur after I would remote start it and let it run for 5 minutes or more. I really do believe this issue is triggered, at least for me, by idling at least 5 minutes. When I intentionally avoided idling the codes did not reappear. After searching this and other forums I decided to focus on the injectors. After a bit of research I settled on trying a fuel injector cleaner, Liqui Moly Jectron to be specific. I usually don't have high expectations for the "off the shelf magic bullet" but this stuff has me really optimistic. I put it in two weeks ago with about 2/3 of a tank and drove about 200 miles over the next day. Since then I have let it idle over 5 minutes two or three times with the key on and exactly 10 minutes three other times by remote starting it and letting shut itself off. At this point the light has not come back on yet. I am sharing this so that others can give it a try and see if they have similar results. The best part being the cleaner is less than $10 at my local Autozone. If this continues to keep the code cleared I am going to add it to my every second oil change checklist. If any of y'all give it try please post here and let me know if it helps at all. I'll report back if it keeps working for me.

I did the same thing. Ran 2 bottles in 2 tank refills. Also ran shell Vpower thinking it might be a fuel problem; cuz it only happened when it was hot outside (85+). It came back a couple weeks later. Decided to trust the dealer's diagnosis and pay up $1300 for a hpfp and it's been good ever since. Still gets a little rough on idle when its really hot and idling for a couple minutes but no check engine light or driveability issues. 

  • 3 weeks later...
Tech43 New Member

Tech43

Posted
Posted
On 8/20/2018 at 10:24 AM, BAMA 4x4 said:

Any luck with fixing P0172 and P0175? I am having the same issues with my 2014 Silverado 5.3 with 128k miles. I have changed the MAF and MAP. The check engine light may stay off a day or two when cleared.    Fuel pump leaking fuel in crank case? Worked on one every shop in town tried to fix. Put fuel pump on fixed gdi motor 5.3 L83

 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,782
    Total Members
    8,960
    Most Online
    ShowMeShooter1332
    Newest Member
    ShowMeShooter1332
    Joined

  • Who's Online   1 Member, 0 Anonymous, 7,181 Guests (See full list)

  • Latest Articles

  • Posts

    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      I was around and remember that era very well, so I'm calling b/s on that statement. If they were that bad no police department or taxi company would've bought a single one ... but they were used in both services (and fire) for DECADES. They were bulletproof and proven. Even the early 21st century ones weren't too bad! The early models were legendary.   Mine is proof, but people like atlas are blinded by agenda and refuse to believe facts right before their very eyes.   Even decades after they were built, a new generation started driving them, posting all their builds and shenanigans on Grandmarq.net and Crownvic.net. The failures would show up then, since they all were deep past 100k-150k miles by that point, and younger drivers tend to be a little aggressive, especially with vehicles than can lay a one-tire fire for as long as you hold your foot in it. They've more than proven themselves over the decades.   The only thing that'll really take them out is road salt. The bodies and sheet metal were garbage. A victim of the cheapout FoMoCo and GM have been partaking in before then, and since.   Today it's the stuff that counts - the undercarriage that rots away first!    GMs Caprice was no slouch either. Reliable as a stone ax - the opposite of what they build now.    
    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      Let me know how your vehicles do in 10 years. You don't know ******, kid. 😂    There's a reason that Panther platform was used as police, fire, and taxi service for DECADES ... long before you were born, apparently.
    • davester
      Disconnecting Battery

      By davester · Posted

      If your connector also has a big lever to get the connector on and off, you don't want to force the lever either way, as it becomes a bigger problem if you bust the lever or the mechanism it works.
    • davester
      Disconnecting Battery

      By davester · Posted

      It's just useful to disconnect the battery to prevent odd shorting out when unplugging/plugging stuff together.  I also  touch the two cable ends together (after disonnecting) to drain the small amount of stored battery energy in various modules.   I believe the main system where you need to be more concerned with, so you need to do the above and then wait some time, iss when you are working on the air bag system, to prevent inadvertent firing of the air bags.   The in-cab switches are just that, plain switches, it's generally not a problem to swap them in/out.  For my '12, I'll get an error message on the dash if I power up the truck w them unplugged, but that's it (power up= turn the ignition on).   The ITBC located above the spare tire is a computer that manages the trailer brake system.  That is probably more important to have the battery disconnected.  It does have to be programmed to the truck, either before or after it's installed, for it to work.  For my '12, I had a very hard time reinstalling the main connector to it (IDK if yours is the same or not), it turned out the silicon seal was jamming up, preventing it from going on all the way.  I finally got it fully installed by lubing the seal with a bit of dielectric grease, then it slid on and latched in place easily.
    • BCGM
      Remote Start Noise 2024 2500 HD Gas

      By BCGM · Posted

      JR ! I just got the truck back from the Dealership today . The technician did a cold remote start on the truck this morning and it made the noise . It was determined that it was a starter issue and replaced it under warranty . Of course   it did not make the sound after a new starter was put in because the truck was not cold . We will we see what happens tomorrow morning when I start the truck cold  . Keep tuned !   Oh I found a video on YouTube of a cold start and it did the same thing your truck and mine do , I will see if I can find it and post it up

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...