Jump to content

Re-gen Indication on Dash

Gstorm

Recommended Posts

Gstorm Enthusiast

Gstorm

Posted
Posted

Hello, I have a 2019 GMC 2500HD SLT, when the truck starts a regen out the exhaust is there any indication on the dash to let you know it's active? The first time I had a regen I found out by walking past a super hot exhaust out the tailpipe with no warning on the dash that something is happening. Thanks

Gary

Colossus Senior Enthusiast

Colossus

Posted
Posted

No.  There is not any type of notification to tell you when in regen.  The RPMs will be about 200 RPMs higher at idle, and other than that the hotter exhaust as you noted, and a drop in fuel economy.   I wish they would give us notice when in regen so that I can keep driving at 50+ MPH for the 20+ miles it takes to complete the regen.  Last night I noticed the RPMs were a bit higher at a stop light so that was my notification that it was wanting to do a regen.  Got on the highway an drove at 75 MPH for 20 min and regen completed.   For those who don't get enough highway speeds in as in getting it hot enough to regen (it will only actively regen at highway speeds) and the DPF gets dirty enough, you'll get a DIC message to keep driving.  All in your owners manual. 
The no regen message and no 4x4 indicator in the dash are my two biggest pet peeves on the trucks up till 2020.  Someone told me they started putting the 4x4 light in the cluster again in 2020?

Stroodle Enthusiast

Stroodle

Posted
Posted

The 2020 3500HD does have the indicator on the display 1553074402_2020gauge1.jpg.e58381e70d6b6a9f5f92dc24d201ca69.jpg now

Colossus Senior Enthusiast

Colossus

Posted
Posted

Huh. thanks for sharing.  Most of the people probably won't even know what that means.  Damn shame that won't put 4WD or 4Hi or something like that

newdude Senior Enthusiast

newdude

Posted
Posted

Only three ways to tell if there is a regen going on.

 

High exhaust temps out the tailpipe.

 

RPM in D at a stop light may be elevated about 200rpm.

 

Fuel economy will drop off when cruising on the highway.  When I had my Colorado Diesel, the MPG readout would drop 10-15mpg easily when in regen.  This was observed at anywhere from 45-70mph cruising.    

Stroodle Enthusiast

Stroodle

Posted
Posted
15 hours ago, Colossus said:

Huh. thanks for sharing.  Most of the people probably won't even know what that means.  Damn shame that won't put 4WD or 4Hi or something like that

Kind of hard to tell from the poor photo I put up, but it does change from 2x4 to 4x4 inside the emblem.  Not as obvious as in years past though.

  • 1 month later...
paauto Enthusiast

paauto

Posted
Posted

I mounted a small yellow LED in my speedo and wired it to the Transfer Case Control Module (X1) pin #12.  Put a blue LED in there as well to let me know when my light bar is on.

slj2008 Senior Enthusiast

slj2008

Posted
Posted
1 hour ago, paauto said:

I mounted a small yellow LED in my speedo and wired it to the Transfer Case Control Module (X1) pin #12.  Put a blue LED in there as well to let me know when my light bar is on.

Any Photo's ???? Thanks

paauto Enthusiast

paauto

Posted
Posted
8 hours ago, slj2008 said:

Any Photo's ???? Thanks

Here's a shot of the 4x4 indicator.

IMG_0377.jpeg

paauto Enthusiast

paauto

Posted
Posted
8 hours ago, slj2008 said:

Any Photo's ???? Thanks

Here's a shot of the 4x4 indicator and light bar indicator (it's blue)...

IMG_0378.jpeg

paauto Enthusiast

paauto

Posted
Posted
8 hours ago, slj2008 said:

Any Photo's ???? Thanks

I control the light bar via a pneumatic foot switch that I placed on the dead pedal.  I bought it from Pressair if anyone is interested. I hit my limit on photo uploading so am unable to post the picture.  If interested you can navigate to:

 

https://paauto.weebly.com

 

where I've posted a bunch of pics of my mods to the truck and the wiring diagram.  I've made a bunch of additions/changes since I posted those pics, but you'll get the drift.

 

In any case, I wired a master switch (located in the center console) in series with the light bar foot switch so I can be assured all power is cut to the light bar and it's not inadvertently switched on (i.e. by my 17 y/o daughter who loves to drive the truck with her friends!).  

 

 

 

Archived

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

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

    342,915
    Total Members
    8,960
    Most Online
    ChristopherDobson
    Newest Member
    ChristopherDobson
    Joined

  • Who's Online   0 Members, 0 Anonymous, 1,215 Guests (See full list)

    • There are no registered users currently online

  • Latest Articles

  • Posts

    • ChristopherDobson
      Vehicle Payments

      By ChristopherDobson · Posted

      Monthly payment is only part of the equation. With today's prices and interest rates, I'd look at the total monthly cost: payment, insurance, registration, fuel, maintenance, and expected repairs. A vehicle that fits comfortably into your budget is usually the better choice than stretching for a higher trim. I've also kept my vehicles longer over the past few years. New cars have gotten expensive enough that driving one for 10+ years, while staying on top of maintenance, often ends up being the most cost-effective approach.
    • 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.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...