Jump to content

Emission recall

gerald compton
 Share

Recommended Posts

gerald compton Enthusiast

gerald compton

Posted
Posted

got a letter from gm saying my 2020 3/4 duramax, has a voluntary emission recall, saying may employ higher than necessary temps to clean DPF filter during regeneration. 

Was wondering if anyone else had had this work done. 

Njmurvin Enthusiast

Njmurvin

Posted
Posted

I had it done on mine about a month or so ago.

  • Like 1
  • 3 weeks later...
Libertized Enthusiast

Libertized

Posted
Posted
On 6/19/2022 at 3:11 PM, gerald compton said:

got a letter from gm saying my 2020 3/4 duramax, has a voluntary emission recall, saying may employ higher than necessary temps to clean DPF filter during regeneration. 

Was wondering if anyone else had had this work done. 

I got it done and it has jacked up my fuel mileage substantially. Lost around 4mpg and I’m pissed. GM won’t revert it back either. 

Libertized Enthusiast

Libertized

Posted
Posted

Has anyone else experienced a significant reduction in mpg since this recall update? Does anyone have an answer as to how to revert or fix? 

XY74 Enthusiast

XY74

Posted
Posted

As posted in the other thread, a few had that issue at first and then returned to normal.  If you are just going off that tank,  remember they burned up a fair amount of fuel going nowhere when they did the update and had to force a regen.

 

Njmurvin Enthusiast

Njmurvin

Posted
Posted

Others reported a "shaking at idle" along with the reduced fuel economy. Mine has a slight shake that it didn't have before the update.

Hilltopperfister New Member

Hilltopperfister

Posted
Posted

Quick question, I had the recall done and now I have had to replace my NOx sensor twice in 2 weeks. Engine code p22FB. Anyone have any ideas. The dealership has zero clue what is going on and I am don’t sitting there for 5 hours while they troubleshoot. 

  • 1 month later...
Duramax 1 New Member

Duramax 1

Posted
Posted

I had the update done a few weeks ago. I got the truck back with a rough idle. I read up on it and found that it needs a small quantity injector reset. I did this with a friends scanner since I did not want to deal with taking it to the dealership again. This smoothed it out and back to normal. I did lose MPG and also today got a p22fb code. If I had a choice I would not do these updates as my truck is a 2020 that I have owned for 3 years without any issues until the updates. 

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

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,902
    Total Members
    8,960
    Most Online
    whenindoubtuseahammer
    Newest Member
    whenindoubtuseahammer
    Joined

  • Who's Online   0 Members, 0 Anonymous, 289 Guests (See full list)

    • There are no registered users currently online

  • Latest Articles

  • Posts

    • davester
      My First Project and GMC has me stumped

      By davester · Posted

      are there any codes? with lots of rust, perhaps disconnect/clean both sides of the connection/examine cable ends (the wires) for corrosion going into the sheath & replace if necessary/reconnect ALL the power AND ground cables between the battery, engine, frame, cab, fuse box and starter charm.li (website) has a no-start diagnostic procedure you can work through to get it working.
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      Its no wonder you've gravitated to the oil types and brands you have in later years after trying certain brands and one being a specialty oil or at least very hard to come by up here and the other would have been a commonly found oil of the era and the vastly different outcomes as a result to using the vehicles in question the same distance for an OCI . It shows what marketing hype can do without actually having the product to back up the claims and that is no different now with the insane claims that are written on the side of a bottle of oil from some of the off the shelf oils.    What has surprised me and I was already finding this out before I bought my truck with the GDI engine, that this newer fancy technology that seemingly would suggest better fuel economy/emissions with this high pressure spray of fuel is not in reality kind at all to the engine or at least the oils life. Yet they insist on claiming long OCI with this technology just like they did with the port or similar type fuel injection systems when in reality its a step back in oil life to have a GDI system.    I think the mistake your making Grumpy is that your not sending your samples to Blackstone and getting the feel good glowing report that you can run it another 1000 or more miles and then send another sample where they say run it yet another 1000 miles and on and on it goes until your sending in something that looks a lot like road tar and then they may suggest you change your oil within the next 1000 miles 😆
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      I am guessing that engines of that design back then had a better ability to be abused and survive longer than a new design engine with the long timing chain and the overhead cams and phasers etc. But I would never guess that an engine could go that far and not fail spectacularly or at least die a slow death. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      In the 80's 90's I'd run Honda's 7,500 miles between changes using Red Line HP 5W20 and do it for hundreds of thousands of miles with issues. Back in the day it was an SAE 20 with the HTHS of a SAE 30 and SN add load. It was also very polar. Oxidation VOA was over 120. Besides those motors were SPFI and lean burn tech. I could have likely run it longer but never did.    We had a Toyota bought new I ran on Pennzoil's latest and greatest synthetic of the day with "Penthane". A made up word for a very low dose of PAO. Tried 7,500 mile OCI's in that Group III/VI chemistry and the rings tapped out at 90K. Rocker box wasn't as bad as the one Punch put up but it wasn't good either. Also a SPFI motor.    I'm around 3,750 across the board on these GDI monsters and the oil it tapped out by then usually on TBN/TAN crossover and color. Red Line HP Euro.    The AMSOIL SS brochures tell you to follow the OEM values for the service class but that it can be run up to 25K if monitored. I can't imagine what motor could go that distance and not tap out. I've never owned one.    Yes, I know. Lot's of people do. I'm just not going to be one of them. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I knew a guy in the early 80's that bought a new Monte Carlo and ran it a 100,000 miles without ever changing the filter or the oil. Just kept adding. It looked like that inside.     

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...