Jump to content

Heads up and check your oil level (UPDATED)

foghorn23

Recommended Posts

Dnt Senior Enthusiast

Dnt

Posted
Posted

This could be more GM Engineering Genius, maybe this is their latest answer to oil consumption issues and the dropping sales volume. If the engine dumps the right amount of gas into the oil it will look like it is staying full and never uses any oil between changes plus the gasoline will wash all the bearing surfaces and the engine will destroy itself at just over the 60,000 mile warranty period creating a huge volume of replacement engine and vehicle sales. It is a GM WIN/WIN.    

  • Replies 89
  • Created
  • Last Reply
Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

To me this is why GM made it an 8qt sump. To help with any fuel dilution problems that the DI engine might encounter.  Nature of the beast so to speak.  Mazda and their Skyactive system is just as bad if not worse for fuel dilution.  They also have high compression engines.

 

It is always good to keep an eye on things under the hood.  You just never know.  This is also why I do used oil analysis with Dyson Analysis.  If you develop any issues a UOA can point them out before they get worse.

foghorn23 Senior Enthusiast

foghorn23

Posted
  • Author
Posted

Got the truck from the dealer this afternoon.  They replaced the HPFP and did an oil change.  Told me to bring it back at the end of the week so they can check it for fuel contamination again just in case it was not the fuel pump and was something else like a bad injector.  I'll probably be pulling the old dipstick between now and then o check for myself.  

foghorn23 Senior Enthusiast

foghorn23

Posted
  • Author
Posted

Well chapter 2 of this adventure has begun.  The HPFP replacement doesn't seem to have solved the problem.  Fresh oil change first of week and oil in gas again by Friday.  Truck is scheduled to go back in Monday for injector replacements.  Hopefully the 2nd time is the charm.  I'll update after I see if fix #2 works.

  • 2 weeks later...
foghorn23 Senior Enthusiast

foghorn23

Posted
  • Author
Posted

Had a member pm me today and ask about an update.  I hadn't updated this thread because I'm honestly in a holding pattern via GM.  Dealership ordered parts and scheduled appointment to replace injectors. However GM contacted them and told them to hold off on injector replacement.  They told them to change the oil again, (second time in a week), and for me to drive the truck about 1K.  They thought the gasoline smell after HPFP replacement might be from residual left over under the valve covers and in other nooks and crannies.  So I've driven it some.  So far the jury is still out.  I'm hopeful it might actually be fixed as I'm not smelling the gasoline like I did.  Oil level seems to be steady as well.  I'll update after 1K miles.

mookdoc6 Senior Enthusiast

mookdoc6

Posted
Posted
7 hours ago, Foghorn17 said:

Had a member pm me today and ask about an update.  I hadn't updated this thread because I'm honestly in a holding pattern via GM.  Dealership ordered parts and scheduled appointment to replace injectors. However GM contacted them and told them to hold off on injector replacement.  They told them to change the oil again, (second time in a week), and for me to drive the truck about 1K.  They thought the gasoline smell after HPFP replacement might be from residual left over under the valve covers and in other nooks and crannies.  So I've driven it some.  So far the jury is still out.  I'm hopeful it might actually be fixed as I'm not smelling the gasoline like I did.  Oil level seems to be steady as well.  I'll update after 1K miles.

Probably So?  I mean where else are you going to get the fuel from?  Leaking injector is it...and what is not burned off after setting will find it's way into the crankcase very quickly...The good thing is you need a high amount to destroy the oil 

Hoginedgewood Enthusiast

Hoginedgewood

Posted
Posted
On 1/19/2018 at 2:10 PM, tnchevy said:

Good to know but everyone should be checking their oil, tires, trans, belts, etc at least once a month.  

I do exactly what the manual says.

Hoginedgewood Enthusiast

Hoginedgewood

Posted
Posted
11 hours ago, Foghorn17 said:

Had a member pm me today and ask about an update.  I hadn't updated this thread because I'm honestly in a holding pattern via GM.  Dealership ordered parts and scheduled appointment to replace injectors. However GM contacted them and told them to hold off on injector replacement.  They told them to change the oil again, (second time in a week), and for me to drive the truck about 1K.  They thought the gasoline smell after HPFP replacement might be from residual left over under the valve covers and in other nooks and crannies.  So I've driven it some.  So far the jury is still out.  I'm hopeful it might actually be fixed as I'm not smelling the gasoline like I did.  Oil level seems to be steady as well.  I'll update after 1K miles.

Maybe kick the can down the road during the warranty 

  • 2 weeks later...
KD5FPV Enthusiast

KD5FPV

Posted
Posted
On 2/10/2018 at 5:54 PM, Foghorn17 said:

Had a member pm me today and ask about an update.  I hadn't updated this thread because I'm honestly in a holding pattern via GM.  Dealership ordered parts and scheduled appointment to replace injectors. However GM contacted them and told them to hold off on injector replacement.  They told them to change the oil again, (second time in a week), and for me to drive the truck about 1K.  They thought the gasoline smell after HPFP replacement might be from residual left over under the valve covers and in other nooks and crannies.  So I've driven it some.  So far the jury is still out.  I'm hopeful it might actually be fixed as I'm not smelling the gasoline like I did.  Oil level seems to be steady as well.  I'll update after 1K miles.

Hey guys first post here, I just bought a new '17 a little over a week ago. Oil level rising and gas smell. I have an appointment tomorrow morning for drop off. Any update on your 1k Miles? 

foghorn23 Senior Enthusiast

foghorn23

Posted
  • Author
Posted

I'm at about 750 miles.  The gas smell seems to have lessened, but the darned oil level looks to be rising.  So I'm not entirely sure, but it's looking like there still may be a problem.  Going to get her back into the dealer in a few days.  Even if they don't do anything, I want to document everything in case things deteriorate in the future.

MichiganCCab Enthusiast

MichiganCCab

Posted
Posted

I just took my 16 Silverado CC in yesterday afternoon for rising oil level and gas smell too. I’ll post dealer “fix” when I get her back.

Loco-diablo Senior Enthusiast

Loco-diablo

Posted
Posted
On 1/19/2018 at 2:10 PM, tnchevy said:

Good to know but everyone should be checking their oil, tires, trans, belts, etc at least once a month.  

Yup...Vehicle ownership 101. I've read that the 8 speeds don't have a trans dipstick. Is that the case?

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

One would think as long as fuel injectors have been around that they would be reliable.  I understand that DI has higher pressures but a fuel injector isn't that complicated.  Seems to me the lowest bidder is using poor quality materials to make these injectors if they are failing so often.

dave07 Enthusiast

dave07

Posted
Posted

I changed the oil in my truck and filled it to the top of the hatched area on the dipstick. A few weeks later I checked the oil again and it was about a quarter of an inch above the hatch area. I wonder if I have this problem. I have a 2015 with about 30k on the clock.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      10 Ford and Chevy engines proven to reach 300,000 miles   You may note a common 3K OCI on this list of gas motors. I skipped over the diesels. Dh'O. 
    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      Thanks newdude!  By the time manual selection is needed, I'm probably too much of a control-freak to depend on the transmission sensing braking to activate automatic downshifting.  I would be anticipating the situation and already be manually downshifting.   This truck replaced a 2004.5 LLY diesel with the Allison 5-speed.  Putting it in T/H made noticeable differences (when the torque converter locked, upshift points, downshift behavior).  On this 2024 gasser with the 10L1000 I haven't been able to detect much, if any, difference.  Ok, I can never tell now when the torque converter locks up.  But I also don't notice differences in shifting.  For downhills, I've probably already manually downshifted by then anyway.  Since it's also more awkward (than the 2004.5) to engage/disengage I don't even bother.  Or maybe it doesn't really matter with just a 3k lb. camper in the bed?   Thanks also for the list of reasons the charging system might select various voltages.  However, what I am seeing doesn't fall into any of those categories.  It very definitely, and very consistently, rises after coasting/braking.  Maybe not immediately, but not very long after coasting/braking.  Very consistently drops voltage when no longer coasting/braking.  It might also be interacting with the camper battery charging (I might disconnect the camper and see if it changes the charging behavior).  I also need to recheck turning on headlights for when I want to force it to charge the camper.   Another JR, in June I converted the camper to LiFePO4.  Since it's not a good idea to try to charge lithiums directly using truck, I installed a Victron Orion XS DC-DC charger (which BTW is AMAZING!!).  Being cheap, I only had to buy that one item (besides the battery, of course) to do the conversion.  The camper OEM 120v battery charger (only 19 years old and works perfectly) and the truck feed the input to the DC-DC charger (not at the same time).  But I didn't want the camper charger feeding back to the truck so I kept the old separator.  I considered replacing the separator with a 30amp diode but that means more work and might add another 1/2 volt drop.  One thing that surprised me was the voltage drop over the long 10awg wire run, so I can only charge smoothly at 8 amps (because the DC-DC charger is completely configurable).  Another reason I don't want an added voltage drop with the diode.  I might also be a little lazy but all this work is being done under the sink with a small cabinet opening.    
    • davester
      cam upgrade in CA

      By davester · Posted

      apparently CA smog is (or at least was)  checking that the vehicle is using the oem and/or a ca smog approved tune, so I expect you'll fail inspection doing it.
    • davester
      Possible lifter tick after DOD delete

      By davester · Posted

      yes, leaking exhaust will mess up o2 sensor readings, which in turn messes up fuel trims.
    • Grumpy Bear
      Sugar Bears 2015 GMC Terrain SLE-2 2.4 AWD

      By Grumpy Bear · Posted

      286,740 Mile Services   8/6/2026   New AC Compressor. Refrigerant oil and dye, evacuate and charge system.  New exhaust system from cat back.  New Iridium plugs plus replace #3 coil Repair/rewire headlamp wiring (passenger side) and replace all forward bulbs. Polish lenses of both assemblies.  Pull rear rotors, clean and adjust parking assembly. Inspect, clean and grease front calipers. Check pads and shoes.  4 wheel power bleed of brake system. Dot 4 Reset idle speed 50 rpm higher New Serpentine belt.    Will need new pads in the rear in about 5K more miles.    Tax Title and License out the door just short of a grand.    AC clutch had bitten the dust. 1 year warranty on the pick and save replacement. Thing will make a Polar Bear cry Uncle.  He spent quite some time on the wiring. It was in the harness and he does nothing half. I got off cheap. I have considerable more light down the road. Sylvania Silver Star replacements.  Gas seal between the porcelain and shell of plug #3 was blown, cooked the coil. That was the cold miss.  Love the new exhaust. I can sneak into the neighborhood again.  Nice to have a working parking brake again. Belle Tire never got it done. That was disappointing.    This was one of her bigger bills and still way cheaper than a payment even given the oil consumption. This thing cost me under a hundred a month in repairs and normal routine costs. What is my incentive to replace it? 🤔           

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...