Jump to content

What are the odds of lifter failure on 2023s

AWD_ATX
 Share

Recommended Posts

AWD_ATX New Member

AWD_ATX

Posted
Posted

Hey friends -- I'm getting ready to pull the trigger on a 23 Sierra SLT (5.3 motor) but some of the known engine problems are making me nervous.  Does anyone have insight as to what percentage of the 5.3 engines will end up in the shop with premature lifter failure?

  • Replies 61
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

It's Tim
It's Tim
jaxcam02
jaxcam02

Out of the total production of vehicles, only a small percentage of us ever join an online forum, an even smaller percentage of us on forums experience lifter failure. Guess who posts online more abou

Z45
Z45

They all have DFM.  GM no longer mentions it on the window stickers but they make no 5.3L or 6.2L engines in the truck w/o it.   Some it may come disabled but all the components exist in the engine, j

Jus Cruisin Enthusiast

Jus Cruisin

Posted
Posted

I didn't give it a 2nd thought. There are probably 100's of thousands of trucks out there that have never had a problem. If it happens, it happens. Then I'll deal with it. Sure not losing sleep... 

  • Like 1
jaxcam02 Enthusiast

jaxcam02

Posted
Posted

Out of the total production of vehicles, only a small percentage of us ever join an online forum, an even smaller percentage of us on forums experience lifter failure. Guess who posts online more about lifters. People who are posting about how their lifters are going strong? OR People who have experienced lifter failure? People who post about lifter failure are a very loud super small minority. The likelihood a vehicle you purchase has lifter failure in its lifetime due to DFM/DOD is infinitesimally small and I have never let it deter me from purchasing any of my 5 2015+ GM vehicles.

  • Like 3
  • Thanks 1
diyer2 Senior Enthusiast

diyer2

Posted
Posted

Will it use oil, transmission clunk, rear window leak etc. 

  • Like 1
  • Thanks 1
mafd2 Senior Enthusiast

mafd2

Posted
Posted

DFM is the contributing factor to lifter failures.  Check if the 5.3 has DFM.  I ordered My 2022 in Dec. of 2021, got it in March of 2022 and it didn't have DFM. Doesn't sound like a helicopter with performance exhaust. 

Z45 Senior Enthusiast

Z45

Posted
Posted (edited)

They all have DFM.  GM no longer mentions it on the window stickers but they make no 5.3L or 6.2L engines in the truck w/o it.   Some it may come disabled but all the components exist in the engine, just does not have the ECM to drive them

L84 EcoTec3 5.3L V8 VVT DI DFM ENGINE SPECIFICATIONS


 

Edited by elcamino
  • Like 2
  • Thanks 1
Bikerjon Enthusiast

Bikerjon

Posted
Posted

I would not worry about this issue at all. IMHO GM makes the best pickup trucks in the world. I have been driving Chevy and GMC trucks for over 30 years. All brands have some issues or failures (including motorcycles). I would go ahead and order the new GMC. Disable the DFM when you take delivery.

Z45 Senior Enthusiast

Z45

Posted
Posted (edited)

The DFM cannot be disabled. Disabling DFM will void the power-train warranty.

Quote

09-00-89-016G: Warranty Administration – Labor Operation 0600014 – Suspected Tampering or Vehicle Modifications 

Tampering is defined as causing intentional modification to a vehicle or vehicle components and is not covered under the terms of the GM New Vehicle Limited Warranty.

Tampering can include, but is not limited to:

·        inducing an electrical component and/or system failures

·        disconnecting wires or connectors

·        intentional contamination of fluids

Non-GM vehicle modifications include, but are not limited to:

·        installation of non-GM accessories

·        installation of suspension lowering or lift kits

·        installation of aftermarket tires and/or wheels

·        installation of “power-up chip” and/or non-GM control module calibrations.

 

Edited by elcamino
2016 Sierra Owner Senior Enthusiast

2016 Sierra Owner

Posted
Posted
On 2/8/2023 at 11:53 AM, mafd2 said:

DFM is the contributing factor to lifter failures.  Check if the 5.3 has DFM.  I ordered My 2022 in Dec. of 2021, got it in March of 2022 and it didn't have DFM. Doesn't sound like a helicopter with performance exhaust. 

It's all back now. You just got one of them during the chip shortage.

 

jaxcam02 Enthusiast

jaxcam02

Posted
Posted
On 2/8/2023 at 11:53 AM, mafd2 said:

DFM is the contributing factor to lifter failures.  Check if the 5.3 has DFM.  I ordered My 2022 in Dec. of 2021, got it in March of 2022 and it didn't have DFM. Doesn't sound like a helicopter with performance exhaust. 

You got a truck without DFM software/hardware installed. You still have an engine with all the DFM components, including the DFM lifters.

mafd2 Senior Enthusiast

mafd2

Posted
Posted
On 2/9/2023 at 2:36 PM, jaxcam02 said:

You got a truck without DFM software/hardware installed. You still have an engine with all the DFM components, including the DFM lifters.

Correct, but I think the lifter problem comes from DFM activations.  I've kept up with other lifter threads and haven't heard of any failures from one that has DFM deactivated;  yet that is.

bwoodsmn Enthusiast

bwoodsmn

Posted
Posted
On 2/8/2023 at 10:53 AM, mafd2 said:

DFM is the contributing factor to lifter failures.  

...Is your opinion.  There is no collaborative evidence that lines up with that - Bad lifter springs and lifters have failed in engines with and without DFM, those parts are the contributing factor, not DFM.  But, your popular yet unproven opinion sells lots of Pulsars and gives false security to those of you seeking out trucks that shipped without the DFM chip.  

  • Like 1
KARNUT Senior Enthusiast

KARNUT

Posted
Posted
7 hours ago, bwoodsmn said:

...Is your opinion.  There is no collaborative evidence that lines up with that - Bad lifter springs and lifters have failed in engines with and without DFM, those parts are the contributing factor, not DFM.  But, your popular yet unproven opinion sells lots of Pulsars and gives false security to those of you seeking out trucks that shipped without the DFM chip.  

You’re asking equipment to do more. Adding more parts to make it happen. Requiring more maintenance to keep it happy. So naturally raising the odds for failure. That’s the facts jack. It doesn’t take much research to find those facts.

  • Thanks 1

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

  • Latest Articles

  • Posts

    • newdude
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By newdude · Posted

      No such thing as regenerative braking on a pure ICE vehicle.     Regenerative braking is the re-capture of energy from electric motors and stores it in the battery pack.  So hybrids, PHEV and EVs have regenerative braking.     What you are seeing is the charging system changing modes is all.  Its likely entering charge mode for some sort of reason is all.  All of the charging modes will be listed below.   As for L10 vs D.  L10 turns off automatic grade braking.  L10 puts you in control of grade downshifts where in D it will automatically do it based on brake pedal position and other factors.  Otherwise L10 and D drive exactly the same aside from that one aspect.    Battery Sulfation Mode The BCM will enter this mode when the interpreted Generator output voltage is less than 13.2 V for 45 minutes. When this condition exists the BCM will enter Charge Mode for 2–3 minutes. The BCM will then determine which mode to enter depending on voltage requirements.   Charge Mode The BCM will enter Charge Mode when ever one of the following conditions are met:   Windshield wipers are ON for more than 3 s. Climate Control Voltage Boost Mode Request is true, as sensed by the HVAC control module via serial data. High speed cooling fan, rear defogger, and HVAC high speed blower operation can cause the BCM to enter the Charge Mode. The estimated battery temperature is less than 0°C (32°F). Battery State of Charge is less than 80%. Vehicle speed is greater than 145 km/h (90 mph) A current sensor malfunction exists. System voltage is determined to be below 12.56 V When any one of these conditions is met, the system will set targeted generator output voltage to a charging voltage between 13.9–15.5 V, depending on the battery state of charge and estimated battery temperature.   Fuel Economy Mode The BCM will enter Fuel Economy Mode when the estimated battery temperature is at least 0°C (32°F) but less than or equal to 80°C (176°F), the calculated battery current is less than 15 A and greater than −8 A, and the battery state-of-charge is greater than or equal to 80%. Its targeted generator output voltage is the open circuit voltage of the battery and can be between 12.5–13.1 V. When fuel economy mode is active, the generator is not charging, only maintaining open circuit battery voltage. The BCM will exit this mode and enter Charge Mode when any of the conditions described above are present.   Headlamp Mode The BCM will enter Headlamp Mode when ever the head lamps are ON (high or low beams). Voltage will be regulated between 13.9–14.5 V.   Start Up Mode When the engine is started the BCM sets a targeted generator output voltage of 14.5 V for 30 s.   Tow/Haul Mode (if applicable) Pressing the Tow/Haul Mode button located on the center stack, the vehicle system voltage is raised and the remote (non-vehicle) battery will be charged. Having the headlamps on will raise the system voltage and if the Tow/Haul button is applied it will not serve any purpose. The voltage is regulated between 13.9-14.5 V.      
    • jaszr2
      Active Grille Delete

      By jaszr2 · Posted

      Hello from Australia Just sharing that there is now a way to delete the active shutters entirely with just a plug in module. Opens up tons of room to light bars etc.
    • jake111
      Gasser Subforum Has Been Quiet - - So, Regenerative Braking and Using L10

      By jake111 · Posted

      I have an observation and a question... 1) I watch the voltage closely because I have had to dial in the cut-in/cut-out voltages of the battery separator to my camper.  The "smart" charging drives me nuts.  Anyway, I noticed that when coasting for a while, and especially if lightly using the brakes (though not necessary), the voltage goes up from mid/high-13 volts to mid/high-14 volts.  Then it drops back down after stopping or going again.  Consistently!   The only explanation I can come up with is REGENERATIVE BRAKING!  Well, maybe that's a little bit of an exaggeration, but it's certainly free extra battery charging.   2) Driving on mountain roads I will use L and vary the max gear.  Things straighten out and I end up in L10.  Sometimes I leave it there for a while.  Is there any difference between L10 and D?   
    • devonthegreat
      anyone interested in a 2002 Chevy Silverado 4x4 parts truck NYC

      By devonthegreat · Posted

      **SOLD** Please end or delete post. thank you
    • PBNB
      Tire pressure for 37s

      By PBNB · Posted

      Do you think this width might affect the chalk test with a higher pressure closer to 65psi? I think lowering the pressure makes sense to get the tread to lay flatter

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...